If you invested $255 in the S&P 500 at the beginning of 1980, you would have about $41,707.68 at the end of 2024, assuming you reinvested all dividends. This is a return on investment of 16,255.95%, or 11.99% per year.
This lump-sum investment beats inflation during this period for an inflation-adjusted return of about 4,198.77% cumulatively, or 8.72% per year.
If you used dollar-cost averaging (monthly) instead of a lump-sum investment, you'd have $35,875.57.
The graph below shows the performance of $255 over time if invested in an S&P 500 index fund. The returns assume that all dividends are automatically reinvested.
This chart shows the rate of gains and loss by month, including dividends:
The nominal return on investment of $255 is $41,452.68, or 16,255.95%. This means by 2024 you would have $41,707.68 in your pocket.
However, it's important to take into account the effect of inflation when considering an investment and especially a long-term investment. You can convert S&P returns to their real (inflation-adjusted) value using an inflation calculation based on the U.S. Bureau of Labor Statistics Consumer Price Index (CPI).
In the case of the returns described above, the CPI in 1980 was 82.400 and the CPI in 2024 was 313.515.
The ratio between these CPIs describes how relative buying power of a dollar has changed over 44 years.
Adjusted for inflation, the $41,707.68 nominal end value of the original $255 investment would have a real return of roughly $10,706.86 in 1980 dollars. This means the inflation-adjusted return is 4,198.77% as opposed to the original 16,255.95%.
For more information on inflation, see our U.S. inflation calculator for 1980.
The table below shows the full dataset pertaining to a $255 investment, including gains and losses over the 540-month period between 1980 and 2024.
Note that data shown is the monthly average closing price. Returns include dividends.
| Year | Month | Return (%) | Amount ($) | CPI |
|---|---|---|---|---|
| 1980 | 1 | 4.40% | 266.21 | 77.80 |
| 1980 | 2 | -8.78% | 242.84 | 78.90 |
| 1980 | 3 | -1.16% | 240.02 | 80.10 |
| 1980 | 4 | 5.04% | 252.11 | 81.00 |
| 1980 | 5 | 6.86% | 269.41 | 81.80 |
| 1980 | 6 | 4.97% | 282.80 | 82.70 |
| 1980 | 7 | 3.50% | 292.71 | 82.70 |
| 1980 | 8 | 2.84% | 301.01 | 83.30 |
| 1980 | 9 | 3.32% | 311.02 | 84.00 |
| 1980 | 10 | 4.61% | 325.37 | 84.80 |
| 1980 | 11 | -1.24% | 321.32 | 85.50 |
| 1980 | 12 | 0.01% | 321.35 | 86.30 |
| 1981 | 1 | -3.07% | 311.49 | 87.00 |
| 1981 | 2 | 4.14% | 324.39 | 87.90 |
| 1981 | 3 | 1.29% | 328.59 | 88.50 |
| 1981 | 4 | -1.62% | 323.27 | 89.10 |
| 1981 | 5 | 0.86% | 326.05 | 89.80 |
| 1981 | 6 | -2.02% | 319.47 | 90.60 |
| 1981 | 7 | 0.80% | 322.04 | 91.60 |
| 1981 | 8 | -8.30% | 295.30 | 92.30 |
| 1981 | 9 | 1.73% | 300.40 | 93.20 |
| 1981 | 10 | 3.04% | 309.54 | 93.40 |
| 1981 | 11 | 1.18% | 313.19 | 93.70 |
| 1981 | 12 | -4.80% | 298.15 | 94.00 |
| 1982 | 1 | -1.91% | 292.44 | 94.30 |
| 1982 | 2 | -2.74% | 284.41 | 94.60 |
| 1982 | 3 | 5.47% | 299.97 | 94.50 |
| 1982 | 4 | 0.57% | 301.68 | 94.90 |
| 1982 | 5 | -5.27% | 285.78 | 95.80 |
| 1982 | 6 | 0.24% | 286.48 | 97.00 |
| 1982 | 7 | 0.79% | 288.75 | 97.50 |
| 1982 | 8 | 12.10% | 323.68 | 97.70 |
| 1982 | 9 | 8.88% | 352.43 | 97.90 |
| 1982 | 10 | 4.50% | 368.28 | 98.20 |
| 1982 | 11 | 1.36% | 373.28 | 98.00 |
| 1982 | 12 | 3.93% | 387.93 | 97.60 |
| 1983 | 1 | 2.13% | 396.19 | 97.80 |
| 1983 | 2 | 3.87% | 411.51 | 97.90 |
| 1983 | 3 | 4.20% | 428.78 | 97.90 |
| 1983 | 4 | 4.42% | 447.75 | 98.60 |
| 1983 | 5 | 1.75% | 455.60 | 99.20 |
| 1983 | 6 | 0.71% | 458.83 | 99.50 |
| 1983 | 7 | -2.41% | 447.78 | 99.90 |
| 1983 | 8 | 3.31% | 462.62 | 100.20 |
| 1983 | 9 | 0.65% | 465.62 | 100.70 |
| 1983 | 10 | -1.14% | 460.30 | 101.00 |
| 1983 | 11 | -0.13% | 459.72 | 101.20 |
| 1983 | 12 | 1.58% | 466.96 | 101.30 |
| 1984 | 1 | -5.11% | 443.09 | 101.90 |
| 1984 | 2 | 0.44% | 445.05 | 102.40 |
| 1984 | 3 | 0.51% | 447.31 | 102.60 |
| 1984 | 4 | -0.25% | 446.18 | 103.10 |
| 1984 | 5 | -1.85% | 437.93 | 103.40 |
| 1984 | 6 | -0.91% | 433.95 | 103.70 |
| 1984 | 7 | 9.21% | 473.90 | 104.10 |
| 1984 | 8 | 1.41% | 480.57 | 104.50 |
| 1984 | 9 | -0.41% | 478.59 | 105.00 |
| 1984 | 10 | 1.29% | 484.74 | 105.30 |
| 1984 | 11 | -0.71% | 481.31 | 105.30 |
| 1984 | 12 | 4.70% | 503.92 | 105.30 |
| 1985 | 1 | 5.79% | 533.09 | 105.50 |
| 1985 | 2 | -0.48% | 530.54 | 106.00 |
| 1985 | 3 | 1.02% | 535.97 | 106.40 |
| 1985 | 4 | 2.74% | 550.64 | 106.90 |
| 1985 | 5 | 2.51% | 564.46 | 107.30 |
| 1985 | 6 | 2.25% | 577.15 | 107.60 |
| 1985 | 7 | -1.85% | 566.50 | 107.80 |
| 1985 | 8 | -1.88% | 555.82 | 108.00 |
| 1985 | 9 | 1.50% | 564.13 | 108.30 |
| 1985 | 10 | 6.42% | 600.35 | 108.70 |
| 1985 | 11 | 5.29% | 632.14 | 109.00 |
| 1985 | 12 | 0.75% | 636.89 | 109.30 |
| 1986 | 1 | 5.70% | 673.17 | 109.60 |
| 1986 | 2 | 6.18% | 714.79 | 109.30 |
| 1986 | 3 | 2.74% | 734.39 | 108.80 |
| 1986 | 4 | 0.49% | 738.00 | 108.60 |
| 1986 | 5 | 3.13% | 761.12 | 108.90 |
| 1986 | 6 | -1.80% | 747.39 | 109.50 |
| 1986 | 7 | 2.28% | 764.44 | 109.50 |
| 1986 | 8 | -2.46% | 745.67 | 109.70 |
| 1986 | 9 | -0.09% | 745.00 | 110.20 |
| 1986 | 10 | 3.53% | 771.32 | 110.30 |
| 1986 | 11 | 1.71% | 784.50 | 110.40 |
| 1986 | 12 | 6.67% | 836.85 | 110.50 |
| 1987 | 1 | 6.46% | 890.93 | 111.20 |
| 1987 | 2 | 4.38% | 929.92 | 111.60 |
| 1987 | 3 | -0.86% | 921.95 | 112.10 |
| 1987 | 4 | 0.17% | 923.55 | 112.70 |
| 1987 | 5 | 4.50% | 965.09 | 113.10 |
| 1987 | 6 | 3.12% | 995.22 | 113.50 |
| 1987 | 7 | 6.45% | 1,059.45 | 113.80 |
| 1987 | 8 | -3.03% | 1,027.35 | 114.40 |
| 1987 | 9 | -11.85% | 905.57 | 115.00 |
| 1987 | 10 | -12.30% | 794.15 | 115.30 |
| 1987 | 11 | -1.33% | 783.55 | 115.40 |
| 1987 | 12 | 4.25% | 816.83 | 115.40 |
| 1988 | 1 | 3.33% | 844.01 | 115.70 |
| 1988 | 2 | 3.23% | 871.29 | 116.00 |
| 1988 | 3 | -0.89% | 863.57 | 116.50 |
| 1988 | 4 | -2.19% | 844.68 | 117.10 |
| 1988 | 5 | 6.00% | 895.34 | 117.50 |
| 1988 | 6 | -0.31% | 892.59 | 118.00 |
| 1988 | 7 | -1.72% | 877.25 | 118.50 |
| 1988 | 8 | 1.93% | 894.16 | 119.00 |
| 1988 | 9 | 3.80% | 928.15 | 119.80 |
| 1988 | 10 | -2.02% | 909.40 | 120.20 |
| 1988 | 11 | 2.33% | 930.55 | 120.30 |
| 1988 | 12 | 3.51% | 963.24 | 120.50 |
| 1989 | 1 | 3.30% | 995.03 | 121.10 |
| 1989 | 2 | -0.16% | 993.42 | 121.60 |
| 1989 | 3 | 3.56% | 1,028.83 | 122.30 |
| 1989 | 4 | 4.12% | 1,071.17 | 123.10 |
| 1989 | 5 | 3.39% | 1,107.51 | 123.80 |
| 1989 | 6 | 2.80% | 1,138.52 | 124.10 |
| 1989 | 7 | 4.69% | 1,191.93 | 124.40 |
| 1989 | 8 | 0.46% | 1,197.36 | 124.60 |
| 1989 | 9 | 0.29% | 1,200.79 | 125.00 |
| 1989 | 10 | -1.81% | 1,179.01 | 125.60 |
| 1989 | 11 | 2.74% | 1,211.28 | 125.90 |
| 1989 | 12 | -2.21% | 1,184.49 | 126.10 |
| 1990 | 1 | -2.53% | 1,154.56 | 127.40 |
| 1990 | 2 | 2.71% | 1,185.81 | 128.00 |
| 1990 | 3 | 0.20% | 1,188.14 | 128.70 |
| 1990 | 4 | 3.85% | 1,233.89 | 128.90 |
| 1990 | 5 | 3.17% | 1,273.01 | 129.20 |
| 1990 | 6 | 0.17% | 1,275.17 | 129.90 |
| 1990 | 7 | -7.86% | 1,174.92 | 130.40 |
| 1990 | 8 | -4.34% | 1,123.92 | 131.60 |
| 1990 | 9 | -2.32% | 1,097.89 | 132.70 |
| 1990 | 10 | 2.98% | 1,130.65 | 133.50 |
| 1990 | 11 | 4.59% | 1,182.51 | 133.80 |
| 1990 | 12 | -0.69% | 1,174.41 | 133.80 |
| 1991 | 1 | 11.61% | 1,310.72 | 134.60 |
| 1991 | 2 | 3.04% | 1,350.62 | 134.80 |
| 1991 | 3 | 2.26% | 1,381.13 | 135.00 |
| 1991 | 4 | -0.18% | 1,378.66 | 135.20 |
| 1991 | 5 | 0.35% | 1,383.45 | 135.60 |
| 1991 | 6 | 0.78% | 1,394.24 | 136.00 |
| 1991 | 7 | 2.68% | 1,431.59 | 136.20 |
| 1991 | 8 | -0.30% | 1,427.25 | 136.60 |
| 1991 | 9 | 0.18% | 1,429.85 | 137.20 |
| 1991 | 10 | 0.02% | 1,430.07 | 137.40 |
| 1991 | 11 | 0.94% | 1,443.45 | 137.80 |
| 1991 | 12 | 7.36% | 1,549.66 | 137.90 |
| 1992 | 1 | -0.60% | 1,540.34 | 138.10 |
| 1992 | 2 | -1.01% | 1,524.75 | 138.60 |
| 1992 | 3 | 0.26% | 1,528.78 | 139.30 |
| 1992 | 4 | 2.07% | 1,560.40 | 139.50 |
| 1992 | 5 | -1.33% | 1,539.66 | 139.70 |
| 1992 | 6 | 1.91% | 1,569.10 | 140.20 |
| 1992 | 7 | 0.94% | 1,583.88 | 140.50 |
| 1992 | 8 | 0.38% | 1,589.87 | 140.90 |
| 1992 | 9 | -1.18% | 1,571.07 | 141.30 |
| 1992 | 10 | 2.76% | 1,614.39 | 141.80 |
| 1992 | 11 | 3.27% | 1,667.20 | 142.00 |
| 1992 | 12 | 0.14% | 1,669.58 | 141.90 |
| 1993 | 1 | 1.72% | 1,698.37 | 142.60 |
| 1993 | 2 | 2.15% | 1,734.89 | 143.10 |
| 1993 | 3 | -1.34% | 1,711.61 | 143.60 |
| 1993 | 4 | 0.72% | 1,724.01 | 144.00 |
| 1993 | 5 | 0.87% | 1,738.93 | 144.20 |
| 1993 | 6 | 0.06% | 1,739.99 | 144.40 |
| 1993 | 7 | 1.76% | 1,770.66 | 144.40 |
| 1993 | 8 | 1.35% | 1,794.65 | 144.80 |
| 1993 | 9 | 1.24% | 1,816.94 | 145.10 |
| 1993 | 10 | 0.01% | 1,817.07 | 145.70 |
| 1993 | 11 | 0.89% | 1,833.19 | 145.80 |
| 1993 | 12 | 1.74% | 1,865.01 | 145.80 |
| 1994 | 1 | -0.08% | 1,863.60 | 146.20 |
| 1994 | 2 | -1.42% | 1,837.07 | 146.70 |
| 1994 | 3 | -3.35% | 1,775.59 | 147.20 |
| 1994 | 4 | 1.06% | 1,794.38 | 147.40 |
| 1994 | 5 | 1.11% | 1,814.27 | 147.50 |
| 1994 | 6 | -0.52% | 1,804.85 | 148.00 |
| 1994 | 7 | 3.08% | 1,860.48 | 148.40 |
| 1994 | 8 | 0.82% | 1,875.69 | 149.00 |
| 1994 | 9 | -0.44% | 1,867.36 | 149.40 |
| 1994 | 10 | -0.37% | 1,860.45 | 149.50 |
| 1994 | 11 | -1.03% | 1,841.37 | 149.70 |
| 1994 | 12 | 2.45% | 1,886.51 | 149.70 |
| 1995 | 1 | 3.82% | 1,958.55 | 150.30 |
| 1995 | 2 | 2.56% | 2,008.66 | 150.90 |
| 1995 | 3 | 3.22% | 2,073.25 | 151.40 |
| 1995 | 4 | 3.35% | 2,142.65 | 151.90 |
| 1995 | 5 | 3.18% | 2,210.76 | 152.20 |
| 1995 | 6 | 3.55% | 2,289.18 | 152.50 |
| 1995 | 7 | 0.51% | 2,300.93 | 152.50 |
| 1995 | 8 | 3.72% | 2,386.47 | 152.90 |
| 1995 | 9 | 0.91% | 2,408.25 | 153.20 |
| 1995 | 10 | 2.36% | 2,465.04 | 153.70 |
| 1995 | 11 | 3.39% | 2,548.59 | 153.60 |
| 1995 | 12 | 0.16% | 2,552.73 | 153.50 |
| 1996 | 1 | 5.90% | 2,703.45 | 154.40 |
| 1996 | 2 | -0.20% | 2,698.03 | 154.90 |
| 1996 | 3 | 0.20% | 2,703.34 | 155.70 |
| 1996 | 4 | 2.35% | 2,767.00 | 156.30 |
| 1996 | 5 | 1.28% | 2,802.38 | 156.60 |
| 1996 | 6 | -3.48% | 2,704.96 | 156.70 |
| 1996 | 7 | 3.08% | 2,788.15 | 157.00 |
| 1996 | 8 | 2.02% | 2,844.58 | 157.30 |
| 1996 | 9 | 4.12% | 2,961.76 | 157.80 |
| 1996 | 10 | 5.05% | 3,111.39 | 158.30 |
| 1996 | 11 | 1.20% | 3,148.67 | 158.60 |
| 1996 | 12 | 3.26% | 3,251.24 | 158.60 |
| 1997 | 1 | 4.36% | 3,393.03 | 159.10 |
| 1997 | 2 | -0.62% | 3,371.87 | 159.60 |
| 1997 | 3 | -3.41% | 3,257.05 | 160.00 |
| 1997 | 4 | 9.22% | 3,557.28 | 160.20 |
| 1997 | 5 | 5.34% | 3,747.13 | 160.10 |
| 1997 | 6 | 5.74% | 3,962.06 | 160.30 |
| 1997 | 7 | 0.35% | 3,975.84 | 160.50 |
| 1997 | 8 | 1.19% | 4,023.23 | 160.80 |
| 1997 | 9 | 1.65% | 4,089.43 | 161.20 |
| 1997 | 10 | -1.15% | 4,042.32 | 161.60 |
| 1997 | 11 | 2.63% | 4,148.81 | 161.50 |
| 1997 | 12 | 0.24% | 4,158.65 | 161.30 |
| 1998 | 1 | 6.40% | 4,424.89 | 161.60 |
| 1998 | 2 | 5.31% | 4,659.98 | 161.90 |
| 1998 | 3 | 3.41% | 4,818.69 | 162.20 |
| 1998 | 4 | -0.22% | 4,808.00 | 162.50 |
| 1998 | 5 | 0.12% | 4,813.60 | 162.80 |
| 1998 | 6 | 4.47% | 5,028.65 | 163.00 |
| 1998 | 7 | -6.97% | 4,678.10 | 163.20 |
| 1998 | 8 | -4.90% | 4,448.95 | 163.40 |
| 1998 | 9 | 1.29% | 4,506.38 | 163.60 |
| 1998 | 10 | 10.97% | 5,000.93 | 164.00 |
| 1998 | 11 | 4.10% | 5,206.17 | 164.00 |
| 1998 | 12 | 5.05% | 5,468.96 | 163.90 |
| 1999 | 1 | -0.07% | 5,465.31 | 164.30 |
| 1999 | 2 | 2.92% | 5,625.09 | 164.50 |
| 1999 | 3 | 4.25% | 5,864.16 | 165.00 |
| 1999 | 4 | -0.10% | 5,858.36 | 166.20 |
| 1999 | 5 | -0.61% | 5,822.52 | 166.20 |
| 1999 | 6 | 4.52% | 6,085.84 | 166.20 |
| 1999 | 7 | -3.77% | 5,856.14 | 166.70 |
| 1999 | 8 | -0.60% | 5,821.12 | 167.10 |
| 1999 | 9 | -1.27% | 5,747.05 | 167.90 |
| 1999 | 10 | 7.11% | 6,155.43 | 168.20 |
| 1999 | 11 | 2.81% | 6,328.32 | 168.30 |
| 1999 | 12 | -0.12% | 6,320.79 | 168.30 |
| 2000 | 1 | -2.48% | 6,164.16 | 168.80 |
| 2000 | 2 | 3.94% | 6,407.08 | 169.80 |
| 2000 | 3 | 1.42% | 6,498.36 | 171.20 |
| 2000 | 4 | -2.84% | 6,313.89 | 171.30 |
| 2000 | 5 | 3.16% | 6,513.63 | 171.50 |
| 2000 | 6 | 0.85% | 6,569.01 | 172.40 |
| 2000 | 7 | 0.94% | 6,630.74 | 172.80 |
| 2000 | 8 | -1.08% | 6,559.15 | 172.80 |
| 2000 | 9 | -5.21% | 6,217.15 | 173.70 |
| 2000 | 10 | -0.77% | 6,169.11 | 174.00 |
| 2000 | 11 | -3.32% | 5,964.29 | 174.10 |
| 2000 | 12 | 0.46% | 5,991.43 | 174.00 |
| 2001 | 1 | -2.14% | 5,863.44 | 175.10 |
| 2001 | 2 | -9.08% | 5,331.05 | 175.80 |
| 2001 | 3 | 0.45% | 5,354.97 | 176.20 |
| 2001 | 4 | 6.88% | 5,723.35 | 176.90 |
| 2001 | 5 | -2.39% | 5,586.64 | 177.70 |
| 2001 | 6 | -2.66% | 5,438.02 | 178.00 |
| 2001 | 7 | -2.05% | 5,326.77 | 177.50 |
| 2001 | 8 | -11.25% | 4,727.65 | 177.50 |
| 2001 | 9 | 3.18% | 4,878.18 | 178.30 |
| 2001 | 10 | 5.05% | 5,124.68 | 177.70 |
| 2001 | 11 | 1.47% | 5,199.81 | 177.40 |
| 2001 | 12 | -0.30% | 5,184.33 | 176.70 |
| 2002 | 1 | -3.35% | 5,010.51 | 177.10 |
| 2002 | 2 | 4.95% | 5,258.30 | 177.80 |
| 2002 | 3 | -3.51% | 5,073.50 | 178.80 |
| 2002 | 4 | -2.82% | 4,930.41 | 179.80 |
| 2002 | 5 | -5.92% | 4,638.48 | 179.80 |
| 2002 | 6 | -10.76% | 4,139.45 | 179.90 |
| 2002 | 7 | 1.14% | 4,186.59 | 180.10 |
| 2002 | 8 | -4.76% | 3,987.40 | 180.70 |
| 2002 | 9 | -1.37% | 3,932.89 | 181.00 |
| 2002 | 10 | 6.63% | 4,193.47 | 181.30 |
| 2002 | 11 | -1.04% | 4,150.06 | 181.30 |
| 2002 | 12 | -0.22% | 4,140.83 | 180.90 |
| 2003 | 1 | -6.41% | 3,875.20 | 181.70 |
| 2003 | 2 | 1.31% | 3,925.89 | 183.10 |
| 2003 | 3 | 5.29% | 4,133.40 | 184.20 |
| 2003 | 4 | 5.31% | 4,352.98 | 183.80 |
| 2003 | 5 | 5.70% | 4,601.28 | 183.50 |
| 2003 | 6 | 0.60% | 4,628.70 | 183.70 |
| 2003 | 7 | -0.17% | 4,621.00 | 183.90 |
| 2003 | 8 | 3.16% | 4,767.08 | 184.60 |
| 2003 | 9 | 2.03% | 4,863.75 | 185.20 |
| 2003 | 10 | 1.21% | 4,922.63 | 185.00 |
| 2003 | 11 | 3.06% | 5,073.45 | 184.50 |
| 2003 | 12 | 4.93% | 5,323.82 | 184.30 |
| 2004 | 1 | 1.09% | 5,381.67 | 185.20 |
| 2004 | 2 | -1.57% | 5,297.44 | 186.20 |
| 2004 | 3 | 0.97% | 5,348.72 | 187.40 |
| 2004 | 4 | -2.56% | 5,211.57 | 188.00 |
| 2004 | 5 | 2.86% | 5,360.50 | 189.10 |
| 2004 | 6 | -2.24% | 5,240.49 | 189.70 |
| 2004 | 7 | -1.39% | 5,167.77 | 189.40 |
| 2004 | 8 | 2.78% | 5,311.57 | 189.50 |
| 2004 | 9 | 0.10% | 5,317.02 | 189.90 |
| 2004 | 10 | 4.77% | 5,570.85 | 190.90 |
| 2004 | 11 | 2.73% | 5,722.79 | 191.00 |
| 2004 | 12 | -1.35% | 5,645.58 | 190.30 |
| 2005 | 1 | 1.68% | 5,740.49 | 190.70 |
| 2005 | 2 | -0.26% | 5,725.82 | 191.80 |
| 2005 | 3 | -2.41% | 5,587.89 | 193.30 |
| 2005 | 4 | 1.34% | 5,662.54 | 194.60 |
| 2005 | 5 | 2.18% | 5,786.02 | 194.40 |
| 2005 | 6 | 1.81% | 5,890.62 | 194.50 |
| 2005 | 7 | 0.31% | 5,908.88 | 195.40 |
| 2005 | 8 | 0.28% | 5,925.41 | 196.40 |
| 2005 | 9 | -2.62% | 5,769.91 | 198.80 |
| 2005 | 10 | 3.96% | 5,998.49 | 199.20 |
| 2005 | 11 | 2.14% | 6,127.11 | 197.60 |
| 2005 | 12 | 1.47% | 6,216.98 | 196.80 |
| 2006 | 1 | -0.02% | 6,215.94 | 198.30 |
| 2006 | 2 | 1.49% | 6,308.32 | 198.70 |
| 2006 | 3 | 0.80% | 6,358.68 | 199.80 |
| 2006 | 4 | -0.79% | 6,308.66 | 201.50 |
| 2006 | 5 | -2.71% | 6,137.96 | 202.50 |
| 2006 | 6 | 0.72% | 6,182.16 | 202.90 |
| 2006 | 7 | 2.29% | 6,323.84 | 203.50 |
| 2006 | 8 | 2.53% | 6,483.91 | 203.90 |
| 2006 | 9 | 3.62% | 6,718.36 | 202.90 |
| 2006 | 10 | 2.00% | 6,852.84 | 201.80 |
| 2006 | 11 | 2.15% | 7,000.05 | 201.50 |
| 2006 | 12 | 0.69% | 7,048.55 | 201.80 |
| 2007 | 1 | 1.60% | 7,161.05 | 202.42 |
| 2007 | 2 | -2.47% | 6,983.89 | 203.50 |
| 2007 | 3 | 4.18% | 7,275.84 | 205.35 |
| 2007 | 4 | 3.39% | 7,522.62 | 206.69 |
| 2007 | 5 | 0.34% | 7,548.56 | 207.95 |
| 2007 | 6 | 0.57% | 7,591.94 | 208.35 |
| 2007 | 7 | -4.20% | 7,272.99 | 208.30 |
| 2007 | 8 | 3.07% | 7,496.62 | 207.92 |
| 2007 | 9 | 2.99% | 7,720.89 | 208.49 |
| 2007 | 10 | -4.81% | 7,349.80 | 208.94 |
| 2007 | 11 | 1.24% | 7,440.81 | 210.18 |
| 2007 | 12 | -6.64% | 6,947.09 | 210.04 |
| 2008 | 1 | -1.56% | 6,838.44 | 211.08 |
| 2008 | 2 | -2.63% | 6,658.82 | 211.69 |
| 2008 | 3 | 4.24% | 6,941.41 | 213.53 |
| 2008 | 4 | 2.56% | 7,119.29 | 214.82 |
| 2008 | 5 | -4.25% | 6,816.96 | 216.63 |
| 2008 | 6 | -6.08% | 6,402.60 | 218.82 |
| 2008 | 7 | 2.11% | 6,537.73 | 219.96 |
| 2008 | 8 | -4.85% | 6,220.81 | 219.09 |
| 2008 | 9 | -20.19% | 4,964.60 | 218.78 |
| 2008 | 10 | -8.61% | 4,537.38 | 216.57 |
| 2008 | 11 | -0.35% | 4,521.45 | 212.43 |
| 2008 | 12 | -1.10% | 4,471.91 | 210.23 |
| 2009 | 1 | -6.70% | 4,172.18 | 211.14 |
| 2009 | 2 | -5.69% | 3,934.89 | 212.19 |
| 2009 | 3 | 12.32% | 4,419.74 | 212.71 |
| 2009 | 4 | 6.66% | 4,714.09 | 213.24 |
| 2009 | 5 | 2.87% | 4,849.33 | 213.86 |
| 2009 | 6 | 1.28% | 4,911.28 | 215.69 |
| 2009 | 7 | 8.12% | 5,310.12 | 215.35 |
| 2009 | 8 | 3.65% | 5,503.95 | 215.83 |
| 2009 | 9 | 2.40% | 5,636.22 | 215.97 |
| 2009 | 10 | 2.09% | 5,754.26 | 216.18 |
| 2009 | 11 | 2.23% | 5,882.34 | 216.33 |
| 2009 | 12 | 1.36% | 5,962.16 | 215.95 |
| 2010 | 1 | -2.90% | 5,789.35 | 216.69 |
| 2010 | 2 | 5.94% | 6,133.41 | 216.74 |
| 2010 | 3 | 4.09% | 6,384.14 | 217.63 |
| 2010 | 4 | -5.88% | 6,008.60 | 218.01 |
| 2010 | 5 | -3.54% | 5,795.68 | 218.18 |
| 2010 | 6 | -0.16% | 5,786.47 | 217.97 |
| 2010 | 7 | 0.86% | 5,836.44 | 218.01 |
| 2010 | 8 | 3.37% | 6,033.19 | 218.31 |
| 2010 | 9 | 4.58% | 6,309.36 | 218.44 |
| 2010 | 10 | 2.49% | 6,466.52 | 218.71 |
| 2010 | 11 | 3.71% | 6,706.67 | 218.80 |
| 2010 | 12 | 3.46% | 6,938.87 | 219.18 |
| 2011 | 1 | 3.15% | 7,157.50 | 220.22 |
| 2011 | 2 | -1.11% | 7,077.88 | 221.31 |
| 2011 | 3 | 2.22% | 7,235.07 | 223.47 |
| 2011 | 4 | 0.66% | 7,282.77 | 224.91 |
| 2011 | 5 | -3.66% | 7,016.03 | 225.96 |
| 2011 | 6 | 3.10% | 7,233.65 | 225.72 |
| 2011 | 7 | -10.40% | 6,481.30 | 225.92 |
| 2011 | 8 | -0.79% | 6,430.15 | 226.55 |
| 2011 | 9 | 3.02% | 6,624.27 | 226.89 |
| 2011 | 10 | 1.77% | 6,741.33 | 226.42 |
| 2011 | 11 | 1.55% | 6,846.14 | 226.23 |
| 2011 | 12 | 4.78% | 7,173.56 | 225.67 |
| 2012 | 1 | 4.16% | 7,472.17 | 226.67 |
| 2012 | 2 | 2.88% | 7,687.65 | 227.66 |
| 2012 | 3 | -0.04% | 7,684.72 | 229.39 |
| 2012 | 4 | -3.09% | 7,447.19 | 230.09 |
| 2012 | 5 | -1.15% | 7,361.36 | 229.82 |
| 2012 | 6 | 2.92% | 7,576.40 | 229.48 |
| 2012 | 7 | 3.39% | 7,833.06 | 229.10 |
| 2012 | 8 | 3.02% | 8,069.71 | 230.38 |
| 2012 | 9 | -0.22% | 8,052.19 | 231.41 |
| 2012 | 10 | -2.84% | 7,823.71 | 231.32 |
| 2012 | 11 | 2.18% | 7,993.92 | 230.22 |
| 2012 | 12 | 4.27% | 8,335.16 | 229.60 |
| 2013 | 1 | 2.33% | 8,529.62 | 230.28 |
| 2013 | 2 | 2.72% | 8,761.83 | 232.17 |
| 2013 | 3 | 1.45% | 8,889.21 | 232.77 |
| 2013 | 4 | 4.57% | 9,295.83 | 232.53 |
| 2013 | 5 | -1.12% | 9,191.92 | 232.95 |
| 2013 | 6 | 3.25% | 9,491.07 | 233.50 |
| 2013 | 7 | 0.25% | 9,515.04 | 233.60 |
| 2013 | 8 | 1.19% | 9,628.50 | 233.88 |
| 2013 | 9 | 2.12% | 9,832.39 | 234.15 |
| 2013 | 10 | 3.86% | 10,211.92 | 233.55 |
| 2013 | 11 | 1.52% | 10,367.31 | 233.07 |
| 2013 | 12 | 0.97% | 10,467.65 | 233.05 |
| 2014 | 1 | -0.13% | 10,454.04 | 233.92 |
| 2014 | 2 | 2.72% | 10,738.62 | 234.78 |
| 2014 | 3 | 0.20% | 10,760.28 | 236.29 |
| 2014 | 4 | 1.53% | 10,925.14 | 237.07 |
| 2014 | 5 | 3.20% | 11,274.34 | 237.90 |
| 2014 | 6 | 1.50% | 11,442.98 | 238.34 |
| 2014 | 7 | -0.43% | 11,394.13 | 238.25 |
| 2014 | 8 | 1.78% | 11,596.72 | 237.85 |
| 2014 | 9 | -2.65% | 11,289.80 | 238.03 |
| 2014 | 10 | 5.71% | 11,933.96 | 237.43 |
| 2014 | 11 | 0.63% | 12,009.61 | 236.15 |
| 2014 | 12 | -1.11% | 11,876.29 | 234.81 |
| 2015 | 1 | 2.83% | 12,212.08 | 233.71 |
| 2015 | 2 | 0.06% | 12,218.84 | 234.72 |
| 2015 | 3 | 0.88% | 12,326.18 | 236.12 |
| 2015 | 4 | 0.98% | 12,446.84 | 236.60 |
| 2015 | 5 | -0.44% | 12,392.63 | 237.81 |
| 2015 | 6 | -0.08% | 12,382.76 | 238.64 |
| 2015 | 7 | -2.42% | 12,082.56 | 238.65 |
| 2015 | 8 | -4.51% | 11,537.98 | 238.32 |
| 2015 | 9 | 4.32% | 12,036.09 | 237.95 |
| 2015 | 10 | 2.93% | 12,389.05 | 237.84 |
| 2015 | 11 | -1.10% | 12,252.40 | 237.34 |
| 2015 | 12 | -6.42% | 11,465.84 | 236.53 |
| 2016 | 1 | -0.55% | 11,402.79 | 236.92 |
| 2016 | 2 | 6.36% | 12,128.32 | 237.11 |
| 2016 | 3 | 2.83% | 12,471.70 | 238.13 |
| 2016 | 4 | -0.30% | 12,433.74 | 239.26 |
| 2016 | 5 | 1.07% | 12,566.35 | 240.23 |
| 2016 | 6 | 3.30% | 12,980.72 | 241.02 |
| 2016 | 7 | 1.20% | 13,136.39 | 240.63 |
| 2016 | 8 | -0.44% | 13,078.76 | 240.85 |
| 2016 | 9 | -0.51% | 13,012.59 | 241.43 |
| 2016 | 10 | 1.20% | 13,168.89 | 241.73 |
| 2016 | 11 | 3.95% | 13,688.53 | 241.35 |
| 2016 | 12 | 1.44% | 13,885.32 | 241.43 |
| 2017 | 1 | 2.58% | 14,243.07 | 242.84 |
| 2017 | 2 | 1.75% | 14,492.21 | 243.60 |
| 2017 | 3 | -0.15% | 14,469.90 | 243.80 |
| 2017 | 4 | 1.69% | 14,714.78 | 244.52 |
| 2017 | 5 | 1.78% | 14,976.18 | 244.73 |
| 2017 | 6 | 0.99% | 15,124.12 | 244.96 |
| 2017 | 7 | 0.25% | 15,161.60 | 244.79 |
| 2017 | 8 | 1.65% | 15,412.26 | 245.52 |
| 2017 | 9 | 2.73% | 15,833.76 | 246.82 |
| 2017 | 10 | 1.59% | 16,085.45 | 246.66 |
| 2017 | 11 | 2.88% | 16,549.27 | 246.67 |
| 2017 | 12 | 4.86% | 17,353.88 | 246.52 |
| 2018 | 1 | -2.89% | 16,852.93 | 247.87 |
| 2018 | 2 | 0.06% | 16,863.81 | 248.99 |
| 2018 | 3 | -1.66% | 16,583.20 | 249.55 |
| 2018 | 4 | 1.96% | 16,908.50 | 250.55 |
| 2018 | 5 | 2.11% | 17,265.77 | 251.59 |
| 2018 | 6 | 1.58% | 17,538.70 | 251.99 |
| 2018 | 7 | 2.45% | 17,968.54 | 252.01 |
| 2018 | 8 | 1.68% | 18,270.36 | 252.15 |
| 2018 | 9 | -3.85% | 17,567.14 | 252.44 |
| 2018 | 10 | -2.08% | 17,202.43 | 252.89 |
| 2018 | 11 | -5.56% | 16,245.54 | 252.04 |
| 2018 | 12 | 1.74% | 16,527.50 | 251.23 |
| 2019 | 1 | 5.83% | 17,490.88 | 251.71 |
| 2019 | 2 | 1.95% | 17,831.60 | 252.78 |
| 2019 | 3 | 3.72% | 18,495.51 | 254.20 |
| 2019 | 4 | -1.53% | 18,212.20 | 255.55 |
| 2019 | 5 | 1.40% | 18,468.04 | 256.09 |
| 2019 | 6 | 3.83% | 19,174.87 | 256.14 |
| 2019 | 7 | -3.13% | 18,573.85 | 256.57 |
| 2019 | 8 | 3.09% | 19,146.90 | 256.56 |
| 2019 | 9 | 0.01% | 19,148.77 | 256.76 |
| 2019 | 10 | 4.43% | 19,997.77 | 257.35 |
| 2019 | 11 | 2.47% | 20,491.58 | 257.21 |
| 2019 | 12 | 3.35% | 21,177.31 | 256.97 |
| 2020 | 1 | 0.12% | 21,203.16 | 257.97 |
| 2020 | 2 | -18.92% | 17,192.01 | 258.68 |
| 2020 | 3 | 4.32% | 17,934.47 | 258.12 |
| 2020 | 4 | 5.89% | 18,990.33 | 256.39 |
| 2020 | 5 | 6.51% | 20,226.28 | 256.39 |
| 2020 | 6 | 3.48% | 20,929.43 | 257.80 |
| 2020 | 7 | 5.89% | 22,162.91 | 259.10 |
| 2020 | 8 | -0.63% | 22,023.94 | 259.92 |
| 2020 | 9 | 1.73% | 22,404.08 | 260.28 |
| 2020 | 10 | 3.95% | 23,289.96 | 260.39 |
| 2020 | 11 | 4.26% | 24,282.13 | 260.23 |
| 2020 | 12 | 2.80% | 24,960.89 | 260.47 |
| 2021 | 1 | 2.49% | 25,582.80 | 261.58 |
| 2021 | 2 | 0.82% | 25,792.92 | 263.01 |
| 2021 | 3 | 6.02% | 27,346.04 | 264.88 |
| 2021 | 4 | 0.76% | 27,553.94 | 267.05 |
| 2021 | 5 | 1.81% | 28,052.78 | 269.20 |
| 2021 | 6 | 3.07% | 28,913.49 | 271.70 |
| 2021 | 7 | 2.19% | 29,545.30 | 273.00 |
| 2021 | 8 | -0.08% | 29,520.33 | 273.57 |
| 2021 | 9 | 0.45% | 29,653.82 | 274.31 |
| 2021 | 10 | 4.74% | 31,060.82 | 276.59 |
| 2021 | 11 | 0.27% | 31,143.25 | 277.95 |
| 2021 | 12 | -2.05% | 30,504.21 | 278.80 |
| 2022 | 1 | -2.90% | 29,618.80 | 281.15 |
| 2022 | 2 | -0.89% | 29,354.43 | 283.72 |
| 2022 | 3 | 0.12% | 29,389.16 | 287.50 |
| 2022 | 4 | -7.87% | 27,075.43 | 289.11 |
| 2022 | 5 | -3.37% | 26,163.15 | 292.30 |
| 2022 | 6 | 0.46% | 26,284.73 | 296.31 |
| 2022 | 7 | 6.45% | 27,979.41 | 296.28 |
| 2022 | 8 | -7.28% | 25,943.23 | 296.17 |
| 2022 | 9 | -3.09% | 25,141.28 | 296.81 |
| 2022 | 10 | 5.29% | 26,470.02 | 298.01 |
| 2022 | 11 | 0.01% | 26,472.89 | 297.71 |
| 2022 | 12 | 1.38% | 26,837.28 | 296.80 |
| 2023 | 1 | 3.15% | 27,681.84 | 299.17 |
| 2023 | 2 | -2.59% | 26,966.15 | 300.84 |
| 2023 | 3 | 4.00% | 28,043.77 | 301.84 |
| 2023 | 4 | 0.74% | 28,250.65 | 303.36 |
| 2023 | 5 | 4.94% | 29,646.85 | 304.13 |
| 2023 | 6 | 3.88% | 30,795.98 | 305.11 |
| 2023 | 7 | -1.00% | 30,488.74 | 305.69 |
| 2023 | 8 | -0.95% | 30,198.01 | 307.03 |
| 2023 | 9 | -3.04% | 29,280.80 | 307.79 |
| 2023 | 10 | 4.60% | 30,628.22 | 307.67 |
| 2023 | 11 | 5.18% | 32,213.31 | 307.05 |
| 2023 | 12 | 2.91% | 33,151.31 | 306.75 |
| 2024 | 1 | 4.20% | 34,543.42 | 308.42 |
| 2024 | 2 | 3.28% | 35,677.18 | 310.33 |
| 2024 | 3 | -1.01% | 35,317.15 | 312.33 |
| 2024 | 4 | 2.52% | 36,205.98 | 313.55 |
| 2024 | 5 | 3.55% | 37,491.51 | 314.07 |
| 2024 | 6 | 2.38% | 38,383.68 | 314.18 |
| 2024 | 7 | -0.97% | 38,011.12 | 314.54 |
| 2024 | 8 | 2.72% | 39,045.83 | 314.80 |
| 2024 | 9 | 3.15% | 40,276.51 | 315.30 |
| 2024 | 10 | 2.48% | 41,276.08 | 315.66 |
| 2024 | 11 | 1.47% | 41,882.97 | 315.49 |
| 2024 | 12 | -0.42% | 41,707.68 | 315.61 |
Remember, returns are based on the average closing price across the entire month. Some losses are offset by dividend returns.
Dollar-cost averaging is an alternative to investing the full lump-sum of $255.00 up-front. Instead, the capital is invested over a period of time.
Consider a strategy in which $255.00 was invested in the S&P 500 over a period of no more than 24 months beginning in 1980. This would result in a final amount of $35,875.57, including dividend reinvestments. In this particular case, dollar-cost average returns are less than the returns of a lump-sum investment (which ends with $41,707.68).
| Year | Month | Contribution ($) | Amount ($) |
|---|---|---|---|
| 1980 | 1 | 10.62 | 11.04 |
| 1980 | 2 | 10.62 | 19.72 |
| 1980 | 3 | 10.62 | 29.93 |
| 1980 | 4 | 10.62 | 42.55 |
| 1980 | 5 | 10.62 | 56.77 |
| 1980 | 6 | 10.62 | 70.69 |
| 1980 | 7 | 10.62 | 84.11 |
| 1980 | 8 | 10.62 | 97.38 |
| 1980 | 9 | 10.62 | 111.55 |
| 1980 | 10 | 10.62 | 127.76 |
| 1980 | 11 | 10.62 | 136.62 |
| 1980 | 12 | 10.62 | 147.21 |
| 1981 | 1 | 10.62 | 152.95 |
| 1981 | 2 | 10.62 | 170.30 |
| 1981 | 3 | 10.62 | 183.22 |
| 1981 | 4 | 10.62 | 190.66 |
| 1981 | 5 | 10.62 | 202.97 |
| 1981 | 6 | 10.62 | 209.24 |
| 1981 | 7 | 10.62 | 221.58 |
| 1981 | 8 | 10.62 | 212.88 |
| 1981 | 9 | 10.62 | 227.31 |
| 1981 | 10 | 10.62 | 245.12 |
| 1981 | 11 | 10.62 | 258.71 |
| 1981 | 12 | 10.74 | 256.46 |
| 1982 | 1 | - | 251.55 |
| 1982 | 2 | - | 244.64 |
| 1982 | 3 | - | 258.02 |
| 1982 | 4 | - | 259.49 |
| 1982 | 5 | - | 245.82 |
| 1982 | 6 | - | 246.42 |
| 1982 | 7 | - | 248.37 |
| 1982 | 8 | - | 278.42 |
| 1982 | 9 | - | 303.14 |
| 1982 | 10 | - | 316.79 |
| 1982 | 11 | - | 321.08 |
| 1982 | 12 | - | 333.68 |
| 1983 | 1 | - | 340.79 |
| 1983 | 2 | - | 353.97 |
| 1983 | 3 | - | 368.82 |
| 1983 | 4 | - | 385.14 |
| 1983 | 5 | - | 391.89 |
| 1983 | 6 | - | 394.67 |
| 1983 | 7 | - | 385.17 |
| 1983 | 8 | - | 397.93 |
| 1983 | 9 | - | 400.51 |
| 1983 | 10 | - | 395.94 |
| 1983 | 11 | - | 395.43 |
| 1983 | 12 | - | 401.66 |
| 1984 | 1 | - | 381.13 |
| 1984 | 2 | - | 382.82 |
| 1984 | 3 | - | 384.76 |
| 1984 | 4 | - | 383.79 |
| 1984 | 5 | - | 376.69 |
| 1984 | 6 | - | 373.27 |
| 1984 | 7 | - | 407.64 |
| 1984 | 8 | - | 413.37 |
| 1984 | 9 | - | 411.67 |
| 1984 | 10 | - | 416.96 |
| 1984 | 11 | - | 414.01 |
| 1984 | 12 | - | 433.46 |
| 1985 | 1 | - | 458.54 |
| 1985 | 2 | - | 456.35 |
| 1985 | 3 | - | 461.03 |
| 1985 | 4 | - | 473.64 |
| 1985 | 5 | - | 485.53 |
| 1985 | 6 | - | 496.44 |
| 1985 | 7 | - | 487.28 |
| 1985 | 8 | - | 478.10 |
| 1985 | 9 | - | 485.25 |
| 1985 | 10 | - | 516.40 |
| 1985 | 11 | - | 543.74 |
| 1985 | 12 | - | 547.83 |
| 1986 | 1 | - | 579.04 |
| 1986 | 2 | - | 614.84 |
| 1986 | 3 | - | 631.70 |
| 1986 | 4 | - | 634.80 |
| 1986 | 5 | - | 654.69 |
| 1986 | 6 | - | 642.88 |
| 1986 | 7 | - | 657.55 |
| 1986 | 8 | - | 641.40 |
| 1986 | 9 | - | 640.82 |
| 1986 | 10 | - | 663.46 |
| 1986 | 11 | - | 674.80 |
| 1986 | 12 | - | 719.83 |
| 1987 | 1 | - | 766.34 |
| 1987 | 2 | - | 799.88 |
| 1987 | 3 | - | 793.03 |
| 1987 | 4 | - | 794.40 |
| 1987 | 5 | - | 830.14 |
| 1987 | 6 | - | 856.06 |
| 1987 | 7 | - | 911.31 |
| 1987 | 8 | - | 883.69 |
| 1987 | 9 | - | 778.94 |
| 1987 | 10 | - | 683.10 |
| 1987 | 11 | - | 673.99 |
| 1987 | 12 | - | 702.61 |
| 1988 | 1 | - | 725.99 |
| 1988 | 2 | - | 749.46 |
| 1988 | 3 | - | 742.82 |
| 1988 | 4 | - | 726.56 |
| 1988 | 5 | - | 770.14 |
| 1988 | 6 | - | 767.78 |
| 1988 | 7 | - | 754.59 |
| 1988 | 8 | - | 769.13 |
| 1988 | 9 | - | 798.37 |
| 1988 | 10 | - | 782.24 |
| 1988 | 11 | - | 800.43 |
| 1988 | 12 | - | 828.55 |
| 1989 | 1 | - | 855.89 |
| 1989 | 2 | - | 854.51 |
| 1989 | 3 | - | 884.97 |
| 1989 | 4 | - | 921.39 |
| 1989 | 5 | - | 952.65 |
| 1989 | 6 | - | 979.32 |
| 1989 | 7 | - | 1,025.26 |
| 1989 | 8 | - | 1,029.93 |
| 1989 | 9 | - | 1,032.88 |
| 1989 | 10 | - | 1,014.15 |
| 1989 | 11 | - | 1,041.90 |
| 1989 | 12 | - | 1,018.86 |
| 1990 | 1 | - | 993.11 |
| 1990 | 2 | - | 1,020.00 |
| 1990 | 3 | - | 1,022.00 |
| 1990 | 4 | - | 1,061.35 |
| 1990 | 5 | - | 1,095.00 |
| 1990 | 6 | - | 1,096.86 |
| 1990 | 7 | - | 1,010.63 |
| 1990 | 8 | - | 966.76 |
| 1990 | 9 | - | 944.37 |
| 1990 | 10 | - | 972.55 |
| 1990 | 11 | - | 1,017.15 |
| 1990 | 12 | - | 1,010.19 |
| 1991 | 1 | - | 1,127.44 |
| 1991 | 2 | - | 1,161.76 |
| 1991 | 3 | - | 1,188.00 |
| 1991 | 4 | - | 1,185.88 |
| 1991 | 5 | - | 1,189.99 |
| 1991 | 6 | - | 1,199.28 |
| 1991 | 7 | - | 1,231.41 |
| 1991 | 8 | - | 1,227.68 |
| 1991 | 9 | - | 1,229.91 |
| 1991 | 10 | - | 1,230.10 |
| 1991 | 11 | - | 1,241.60 |
| 1991 | 12 | - | 1,332.96 |
| 1992 | 1 | - | 1,324.95 |
| 1992 | 2 | - | 1,311.54 |
| 1992 | 3 | - | 1,315.01 |
| 1992 | 4 | - | 1,342.21 |
| 1992 | 5 | - | 1,324.37 |
| 1992 | 6 | - | 1,349.69 |
| 1992 | 7 | - | 1,362.40 |
| 1992 | 8 | - | 1,367.55 |
| 1992 | 9 | - | 1,351.39 |
| 1992 | 10 | - | 1,388.64 |
| 1992 | 11 | - | 1,434.07 |
| 1992 | 12 | - | 1,436.12 |
| 1993 | 1 | - | 1,460.88 |
| 1993 | 2 | - | 1,492.29 |
| 1993 | 3 | - | 1,472.27 |
| 1993 | 4 | - | 1,482.94 |
| 1993 | 5 | - | 1,495.77 |
| 1993 | 6 | - | 1,496.68 |
| 1993 | 7 | - | 1,523.06 |
| 1993 | 8 | - | 1,543.70 |
| 1993 | 9 | - | 1,562.87 |
| 1993 | 10 | - | 1,562.99 |
| 1993 | 11 | - | 1,576.85 |
| 1993 | 12 | - | 1,604.22 |
| 1994 | 1 | - | 1,603.01 |
| 1994 | 2 | - | 1,580.19 |
| 1994 | 3 | - | 1,527.31 |
| 1994 | 4 | - | 1,543.47 |
| 1994 | 5 | - | 1,560.57 |
| 1994 | 6 | - | 1,552.48 |
| 1994 | 7 | - | 1,600.32 |
| 1994 | 8 | - | 1,613.41 |
| 1994 | 9 | - | 1,606.24 |
| 1994 | 10 | - | 1,600.30 |
| 1994 | 11 | - | 1,583.89 |
| 1994 | 12 | - | 1,622.71 |
| 1995 | 1 | - | 1,684.68 |
| 1995 | 2 | - | 1,727.78 |
| 1995 | 3 | - | 1,783.34 |
| 1995 | 4 | - | 1,843.04 |
| 1995 | 5 | - | 1,901.62 |
| 1995 | 6 | - | 1,969.08 |
| 1995 | 7 | - | 1,979.18 |
| 1995 | 8 | - | 2,052.76 |
| 1995 | 9 | - | 2,071.49 |
| 1995 | 10 | - | 2,120.35 |
| 1995 | 11 | - | 2,192.21 |
| 1995 | 12 | - | 2,195.77 |
| 1996 | 1 | - | 2,325.42 |
| 1996 | 2 | - | 2,320.75 |
| 1996 | 3 | - | 2,325.33 |
| 1996 | 4 | - | 2,380.08 |
| 1996 | 5 | - | 2,410.52 |
| 1996 | 6 | - | 2,326.71 |
| 1996 | 7 | - | 2,398.28 |
| 1996 | 8 | - | 2,446.81 |
| 1996 | 9 | - | 2,547.61 |
| 1996 | 10 | - | 2,676.32 |
| 1996 | 11 | - | 2,708.38 |
| 1996 | 12 | - | 2,796.61 |
| 1997 | 1 | - | 2,918.58 |
| 1997 | 2 | - | 2,900.37 |
| 1997 | 3 | - | 2,801.61 |
| 1997 | 4 | - | 3,059.86 |
| 1997 | 5 | - | 3,223.15 |
| 1997 | 6 | - | 3,408.03 |
| 1997 | 7 | - | 3,419.88 |
| 1997 | 8 | - | 3,460.65 |
| 1997 | 9 | - | 3,517.59 |
| 1997 | 10 | - | 3,477.07 |
| 1997 | 11 | - | 3,568.67 |
| 1997 | 12 | - | 3,577.13 |
| 1998 | 1 | - | 3,806.15 |
| 1998 | 2 | - | 4,008.36 |
| 1998 | 3 | - | 4,144.88 |
| 1998 | 4 | - | 4,135.68 |
| 1998 | 5 | - | 4,140.50 |
| 1998 | 6 | - | 4,325.48 |
| 1998 | 7 | - | 4,023.95 |
| 1998 | 8 | - | 3,826.84 |
| 1998 | 9 | - | 3,876.24 |
| 1998 | 10 | - | 4,301.63 |
| 1998 | 11 | - | 4,478.18 |
| 1998 | 12 | - | 4,704.22 |
| 1999 | 1 | - | 4,701.08 |
| 1999 | 2 | - | 4,838.52 |
| 1999 | 3 | - | 5,044.16 |
| 1999 | 4 | - | 5,039.17 |
| 1999 | 5 | - | 5,008.34 |
| 1999 | 6 | - | 5,234.84 |
| 1999 | 7 | - | 5,037.26 |
| 1999 | 8 | - | 5,007.13 |
| 1999 | 9 | - | 4,943.42 |
| 1999 | 10 | - | 5,294.70 |
| 1999 | 11 | - | 5,443.41 |
| 1999 | 12 | - | 5,436.94 |
| 2000 | 1 | - | 5,302.20 |
| 2000 | 2 | - | 5,511.16 |
| 2000 | 3 | - | 5,589.68 |
| 2000 | 4 | - | 5,431.00 |
| 2000 | 5 | - | 5,602.81 |
| 2000 | 6 | - | 5,650.45 |
| 2000 | 7 | - | 5,703.55 |
| 2000 | 8 | - | 5,641.97 |
| 2000 | 9 | - | 5,347.78 |
| 2000 | 10 | - | 5,306.47 |
| 2000 | 11 | - | 5,130.29 |
| 2000 | 12 | - | 5,153.63 |
| 2001 | 1 | - | 5,043.54 |
| 2001 | 2 | - | 4,585.59 |
| 2001 | 3 | - | 4,606.16 |
| 2001 | 4 | - | 4,923.04 |
| 2001 | 5 | - | 4,805.44 |
| 2001 | 6 | - | 4,677.61 |
| 2001 | 7 | - | 4,581.91 |
| 2001 | 8 | - | 4,066.57 |
| 2001 | 9 | - | 4,196.05 |
| 2001 | 10 | - | 4,408.08 |
| 2001 | 11 | - | 4,472.71 |
| 2001 | 12 | - | 4,459.39 |
| 2002 | 1 | - | 4,309.88 |
| 2002 | 2 | - | 4,523.01 |
| 2002 | 3 | - | 4,364.06 |
| 2002 | 4 | - | 4,240.97 |
| 2002 | 5 | - | 3,989.87 |
| 2002 | 6 | - | 3,560.62 |
| 2002 | 7 | - | 3,601.17 |
| 2002 | 8 | - | 3,429.83 |
| 2002 | 9 | - | 3,382.94 |
| 2002 | 10 | - | 3,607.08 |
| 2002 | 11 | - | 3,569.75 |
| 2002 | 12 | - | 3,561.81 |
| 2003 | 1 | - | 3,333.32 |
| 2003 | 2 | - | 3,376.92 |
| 2003 | 3 | - | 3,555.42 |
| 2003 | 4 | - | 3,744.29 |
| 2003 | 5 | - | 3,957.87 |
| 2003 | 6 | - | 3,981.45 |
| 2003 | 7 | - | 3,974.83 |
| 2003 | 8 | - | 4,100.48 |
| 2003 | 9 | - | 4,183.63 |
| 2003 | 10 | - | 4,234.28 |
| 2003 | 11 | - | 4,364.01 |
| 2003 | 12 | - | 4,579.37 |
| 2004 | 1 | - | 4,629.14 |
| 2004 | 2 | - | 4,556.68 |
| 2004 | 3 | - | 4,600.80 |
| 2004 | 4 | - | 4,482.82 |
| 2004 | 5 | - | 4,610.92 |
| 2004 | 6 | - | 4,507.70 |
| 2004 | 7 | - | 4,445.15 |
| 2004 | 8 | - | 4,568.84 |
| 2004 | 9 | - | 4,573.53 |
| 2004 | 10 | - | 4,791.86 |
| 2004 | 11 | - | 4,922.56 |
| 2004 | 12 | - | 4,856.14 |
| 2005 | 1 | - | 4,937.78 |
| 2005 | 2 | - | 4,925.16 |
| 2005 | 3 | - | 4,806.52 |
| 2005 | 4 | - | 4,870.73 |
| 2005 | 5 | - | 4,976.95 |
| 2005 | 6 | - | 5,066.92 |
| 2005 | 7 | - | 5,082.63 |
| 2005 | 8 | - | 5,096.84 |
| 2005 | 9 | - | 4,963.09 |
| 2005 | 10 | - | 5,159.70 |
| 2005 | 11 | - | 5,270.34 |
| 2005 | 12 | - | 5,347.64 |
| 2006 | 1 | - | 5,346.75 |
| 2006 | 2 | - | 5,426.21 |
| 2006 | 3 | - | 5,469.53 |
| 2006 | 4 | - | 5,426.50 |
| 2006 | 5 | - | 5,279.67 |
| 2006 | 6 | - | 5,317.69 |
| 2006 | 7 | - | 5,439.56 |
| 2006 | 8 | - | 5,577.24 |
| 2006 | 9 | - | 5,778.91 |
| 2006 | 10 | - | 5,894.58 |
| 2006 | 11 | - | 6,021.22 |
| 2006 | 12 | - | 6,062.93 |
| 2007 | 1 | - | 6,159.70 |
| 2007 | 2 | - | 6,007.32 |
| 2007 | 3 | - | 6,258.44 |
| 2007 | 4 | - | 6,470.71 |
| 2007 | 5 | - | 6,493.02 |
| 2007 | 6 | - | 6,530.33 |
| 2007 | 7 | - | 6,255.99 |
| 2007 | 8 | - | 6,448.34 |
| 2007 | 9 | - | 6,641.25 |
| 2007 | 10 | - | 6,322.06 |
| 2007 | 11 | - | 6,400.34 |
| 2007 | 12 | - | 5,975.66 |
| 2008 | 1 | - | 5,882.20 |
| 2008 | 2 | - | 5,727.70 |
| 2008 | 3 | - | 5,970.77 |
| 2008 | 4 | - | 6,123.78 |
| 2008 | 5 | - | 5,863.73 |
| 2008 | 6 | - | 5,507.30 |
| 2008 | 7 | - | 5,623.54 |
| 2008 | 8 | - | 5,350.93 |
| 2008 | 9 | - | 4,270.39 |
| 2008 | 10 | - | 3,902.91 |
| 2008 | 11 | - | 3,889.20 |
| 2008 | 12 | - | 3,846.59 |
| 2009 | 1 | - | 3,588.77 |
| 2009 | 2 | - | 3,384.66 |
| 2009 | 3 | - | 3,801.71 |
| 2009 | 4 | - | 4,054.90 |
| 2009 | 5 | - | 4,171.23 |
| 2009 | 6 | - | 4,224.52 |
| 2009 | 7 | - | 4,567.59 |
| 2009 | 8 | - | 4,734.32 |
| 2009 | 9 | - | 4,848.09 |
| 2009 | 10 | - | 4,949.62 |
| 2009 | 11 | - | 5,059.80 |
| 2009 | 12 | - | 5,128.46 |
| 2010 | 1 | - | 4,979.81 |
| 2010 | 2 | - | 5,275.76 |
| 2010 | 3 | - | 5,491.43 |
| 2010 | 4 | - | 5,168.40 |
| 2010 | 5 | - | 4,985.26 |
| 2010 | 6 | - | 4,977.33 |
| 2010 | 7 | - | 5,020.31 |
| 2010 | 8 | - | 5,189.55 |
| 2010 | 9 | - | 5,427.10 |
| 2010 | 10 | - | 5,562.29 |
| 2010 | 11 | - | 5,768.86 |
| 2010 | 12 | - | 5,968.58 |
| 2011 | 1 | - | 6,156.65 |
| 2011 | 2 | - | 6,088.16 |
| 2011 | 3 | - | 6,223.37 |
| 2011 | 4 | - | 6,264.40 |
| 2011 | 5 | - | 6,034.96 |
| 2011 | 6 | - | 6,222.15 |
| 2011 | 7 | - | 5,575.00 |
| 2011 | 8 | - | 5,531.00 |
| 2011 | 9 | - | 5,697.98 |
| 2011 | 10 | - | 5,798.67 |
| 2011 | 11 | - | 5,888.83 |
| 2011 | 12 | - | 6,170.46 |
| 2012 | 1 | - | 6,427.31 |
| 2012 | 2 | - | 6,612.67 |
| 2012 | 3 | - | 6,610.14 |
| 2012 | 4 | - | 6,405.82 |
| 2012 | 5 | - | 6,332.00 |
| 2012 | 6 | - | 6,516.97 |
| 2012 | 7 | - | 6,737.74 |
| 2012 | 8 | - | 6,941.30 |
| 2012 | 9 | - | 6,926.23 |
| 2012 | 10 | - | 6,729.70 |
| 2012 | 11 | - | 6,876.10 |
| 2012 | 12 | - | 7,169.63 |
| 2013 | 1 | - | 7,336.90 |
| 2013 | 2 | - | 7,536.64 |
| 2013 | 3 | - | 7,646.21 |
| 2013 | 4 | - | 7,995.97 |
| 2013 | 5 | - | 7,906.59 |
| 2013 | 6 | - | 8,163.91 |
| 2013 | 7 | - | 8,184.52 |
| 2013 | 8 | - | 8,282.12 |
| 2013 | 9 | - | 8,457.50 |
| 2013 | 10 | - | 8,783.96 |
| 2013 | 11 | - | 8,917.62 |
| 2013 | 12 | - | 9,003.93 |
| 2014 | 1 | - | 8,992.22 |
| 2014 | 2 | - | 9,237.01 |
| 2014 | 3 | - | 9,255.64 |
| 2014 | 4 | - | 9,397.44 |
| 2014 | 5 | - | 9,697.81 |
| 2014 | 6 | - | 9,842.88 |
| 2014 | 7 | - | 9,800.85 |
| 2014 | 8 | - | 9,975.11 |
| 2014 | 9 | - | 9,711.11 |
| 2014 | 10 | - | 10,265.20 |
| 2014 | 11 | - | 10,330.27 |
| 2014 | 12 | - | 10,215.60 |
| 2015 | 1 | - | 10,504.43 |
| 2015 | 2 | - | 10,510.25 |
| 2015 | 3 | - | 10,602.57 |
| 2015 | 4 | - | 10,706.36 |
| 2015 | 5 | - | 10,659.73 |
| 2015 | 6 | - | 10,651.24 |
| 2015 | 7 | - | 10,393.02 |
| 2015 | 8 | - | 9,924.59 |
| 2015 | 9 | - | 10,353.05 |
| 2015 | 10 | - | 10,656.65 |
| 2015 | 11 | - | 10,539.11 |
| 2015 | 12 | - | 9,862.54 |
| 2016 | 1 | - | 9,808.30 |
| 2016 | 2 | - | 10,432.38 |
| 2016 | 3 | - | 10,727.75 |
| 2016 | 4 | - | 10,695.10 |
| 2016 | 5 | - | 10,809.16 |
| 2016 | 6 | - | 11,165.58 |
| 2016 | 7 | - | 11,299.49 |
| 2016 | 8 | - | 11,249.92 |
| 2016 | 9 | - | 11,193.00 |
| 2016 | 10 | - | 11,327.44 |
| 2016 | 11 | - | 11,774.42 |
| 2016 | 12 | - | 11,943.69 |
| 2017 | 1 | - | 12,251.42 |
| 2017 | 2 | - | 12,465.72 |
| 2017 | 3 | - | 12,446.53 |
| 2017 | 4 | - | 12,657.17 |
| 2017 | 5 | - | 12,882.01 |
| 2017 | 6 | - | 13,009.27 |
| 2017 | 7 | - | 13,041.51 |
| 2017 | 8 | - | 13,257.12 |
| 2017 | 9 | - | 13,619.68 |
| 2017 | 10 | - | 13,836.17 |
| 2017 | 11 | - | 14,235.14 |
| 2017 | 12 | - | 14,927.23 |
| 2018 | 1 | - | 14,496.33 |
| 2018 | 2 | - | 14,505.69 |
| 2018 | 3 | - | 14,264.32 |
| 2018 | 4 | - | 14,544.13 |
| 2018 | 5 | - | 14,851.45 |
| 2018 | 6 | - | 15,086.21 |
| 2018 | 7 | - | 15,455.94 |
| 2018 | 8 | - | 15,715.56 |
| 2018 | 9 | - | 15,110.67 |
| 2018 | 10 | - | 14,796.96 |
| 2018 | 11 | - | 13,973.88 |
| 2018 | 12 | - | 14,216.41 |
| 2019 | 1 | - | 15,045.07 |
| 2019 | 2 | - | 15,338.16 |
| 2019 | 3 | - | 15,909.23 |
| 2019 | 4 | - | 15,665.53 |
| 2019 | 5 | - | 15,885.59 |
| 2019 | 6 | - | 16,493.59 |
| 2019 | 7 | - | 15,976.61 |
| 2019 | 8 | - | 16,469.53 |
| 2019 | 9 | - | 16,471.14 |
| 2019 | 10 | - | 17,201.42 |
| 2019 | 11 | - | 17,626.18 |
| 2019 | 12 | - | 18,216.02 |
| 2020 | 1 | - | 18,238.26 |
| 2020 | 2 | - | 14,788.00 |
| 2020 | 3 | - | 15,426.64 |
| 2020 | 4 | - | 16,334.86 |
| 2020 | 5 | - | 17,397.98 |
| 2020 | 6 | - | 18,002.81 |
| 2020 | 7 | - | 19,063.80 |
| 2020 | 8 | - | 18,944.27 |
| 2020 | 9 | - | 19,271.25 |
| 2020 | 10 | - | 20,033.26 |
| 2020 | 11 | - | 20,886.69 |
| 2020 | 12 | - | 21,470.54 |
| 2021 | 1 | - | 22,005.48 |
| 2021 | 2 | - | 22,186.22 |
| 2021 | 3 | - | 23,522.16 |
| 2021 | 4 | - | 23,700.99 |
| 2021 | 5 | - | 24,130.07 |
| 2021 | 6 | - | 24,870.43 |
| 2021 | 7 | - | 25,413.89 |
| 2021 | 8 | - | 25,392.42 |
| 2021 | 9 | - | 25,507.24 |
| 2021 | 10 | - | 26,717.49 |
| 2021 | 11 | - | 26,788.40 |
| 2021 | 12 | - | 26,238.71 |
| 2022 | 1 | - | 25,477.12 |
| 2022 | 2 | - | 25,249.71 |
| 2022 | 3 | - | 25,279.58 |
| 2022 | 4 | - | 23,289.39 |
| 2022 | 5 | - | 22,504.68 |
| 2022 | 6 | - | 22,609.26 |
| 2022 | 7 | - | 24,066.96 |
| 2022 | 8 | - | 22,315.51 |
| 2022 | 9 | - | 21,625.70 |
| 2022 | 10 | - | 22,768.64 |
| 2022 | 11 | - | 22,771.11 |
| 2022 | 12 | - | 23,084.54 |
| 2023 | 1 | - | 23,811.01 |
| 2023 | 2 | - | 23,195.39 |
| 2023 | 3 | - | 24,122.33 |
| 2023 | 4 | - | 24,300.28 |
| 2023 | 5 | - | 25,501.25 |
| 2023 | 6 | - | 26,489.68 |
| 2023 | 7 | - | 26,225.41 |
| 2023 | 8 | - | 25,975.33 |
| 2023 | 9 | - | 25,186.38 |
| 2023 | 10 | - | 26,345.39 |
| 2023 | 11 | - | 27,708.83 |
| 2023 | 12 | - | 28,515.66 |
| 2024 | 1 | - | 29,713.11 |
| 2024 | 2 | - | 30,688.33 |
| 2024 | 3 | - | 30,378.65 |
| 2024 | 4 | - | 31,143.19 |
| 2024 | 5 | - | 32,248.96 |
| 2024 | 6 | - | 33,016.37 |
| 2024 | 7 | - | 32,695.91 |
| 2024 | 8 | - | 33,585.93 |
| 2024 | 9 | - | 34,644.52 |
| 2024 | 10 | - | 35,504.33 |
| 2024 | 11 | - | 36,026.35 |
| 2024 | 12 | - | 35,875.57 |
The information on this page is derived from Robert Shiller's book, Irrational Exuberance and the accompanying dataset, as well as the U.S. Bureau of Labor Statistics' monthly CPI logs.
Note that S&P index value for the current quarter is based on a moving average of closing prices, per Robert Shiller's methodology. The inflation data used is based on annual CPI averages.

Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.
| Start Value Average monthly close | $110.90 |
| End Value Average monthly close | $4,815.61 |
| Change in price | +4,242.30% +8.95% / yr |
| Change incl. dividends | +16,255.95% +11.99% / yr |
| Change incl. dividends, inflation-adjusted | +4,198.77% +8.72% / yr |
| Final amount, nominal ($255 base) | $41,707.68 |
| Final amount, inflation-adjusted ($255 base) | $10,961.86 |