SPIDX vs. ACSTX
Compare and contrast key facts about Invesco S&P 500 Index Fund (SPIDX) and Invesco Comstock Fund (ACSTX).
SPIDX is a passively managed fund by Invesco that tracks the performance of the S&P 500 Index. It was launched on Sep 26, 1997. ACSTX is managed by Invesco. It was launched on Oct 7, 1968.
Performance
SPIDX vs. ACSTX - Performance Comparison
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SPIDX vs. ACSTX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SPIDX Invesco S&P 500 Index Fund | -7.13% | 17.54% | 24.65% | 25.95% | -18.36% | 28.30% | 18.13% | 31.11% | -4.75% | 21.45% |
ACSTX Invesco Comstock Fund | -2.22% | 17.22% | 15.00% | 12.37% | 0.74% | 33.33% | -0.78% | 24.35% | -12.34% | 17.75% |
Returns By Period
In the year-to-date period, SPIDX achieves a -7.13% return, which is significantly lower than ACSTX's -2.22% return. Over the past 10 years, SPIDX has outperformed ACSTX with an annualized return of 13.42%, while ACSTX has yielded a comparatively lower 11.67% annualized return.
SPIDX
- 1D
- -0.40%
- 1M
- -7.71%
- YTD
- -7.13%
- 6M
- -4.70%
- 1Y
- 14.14%
- 3Y*
- 16.85%
- 5Y*
- 11.09%
- 10Y*
- 13.42%
ACSTX
- 1D
- -0.37%
- 1M
- -7.08%
- YTD
- -2.22%
- 6M
- 2.18%
- 1Y
- 11.55%
- 3Y*
- 14.03%
- 5Y*
- 11.23%
- 10Y*
- 11.67%
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SPIDX vs. ACSTX - Expense Ratio Comparison
SPIDX has a 0.29% expense ratio, which is lower than ACSTX's 0.80% expense ratio.
Return for Risk
SPIDX vs. ACSTX — Risk / Return Rank
SPIDX
ACSTX
SPIDX vs. ACSTX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Invesco S&P 500 Index Fund (SPIDX) and Invesco Comstock Fund (ACSTX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| SPIDX | ACSTX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.82 | 0.80 | +0.03 |
Sortino ratioReturn per unit of downside risk | 1.28 | 1.17 | +0.11 |
Omega ratioGain probability vs. loss probability | 1.19 | 1.18 | +0.01 |
Calmar ratioReturn relative to maximum drawdown | 0.97 | 0.85 | +0.12 |
Martin ratioReturn relative to average drawdown | 4.71 | 3.47 | +1.24 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| SPIDX | ACSTX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.82 | 0.80 | +0.03 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.66 | 0.73 | -0.07 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.75 | 0.60 | +0.15 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.44 | 0.50 | -0.06 |
Correlation
The correlation between SPIDX and ACSTX is 0.87, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
SPIDX vs. ACSTX - Dividend Comparison
SPIDX's dividend yield for the trailing twelve months is around 1.16%, less than ACSTX's 9.04% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SPIDX Invesco S&P 500 Index Fund | 1.16% | 1.07% | 1.28% | 1.23% | 1.14% | 2.09% | 1.45% | 2.11% | 2.82% | 1.49% | 1.49% | 1.74% |
ACSTX Invesco Comstock Fund | 9.04% | 8.79% | 10.17% | 8.44% | 13.00% | 8.66% | 2.05% | 6.66% | 10.03% | 3.60% | 6.98% | 1.10% |
Drawdowns
SPIDX vs. ACSTX - Drawdown Comparison
The maximum SPIDX drawdown since its inception was -55.30%, smaller than the maximum ACSTX drawdown of -58.61%. Use the drawdown chart below to compare losses from any high point for SPIDX and ACSTX.
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Drawdown Indicators
| SPIDX | ACSTX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.30% | -58.61% | +3.31% |
Max Drawdown (1Y)Largest decline over 1 year | -12.14% | -12.22% | +0.08% |
Max Drawdown (5Y)Largest decline over 5 years | -24.66% | -17.25% | -7.41% |
Max Drawdown (10Y)Largest decline over 10 years | -33.84% | -44.80% | +10.96% |
Current DrawdownCurrent decline from peak | -8.93% | -8.02% | -0.91% |
Average DrawdownAverage peak-to-trough decline | -10.57% | -9.37% | -1.20% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.57% | 3.03% | -0.46% |
Volatility
SPIDX vs. ACSTX - Volatility Comparison
Invesco S&P 500 Index Fund (SPIDX) has a higher volatility of 4.24% compared to Invesco Comstock Fund (ACSTX) at 3.34%. This indicates that SPIDX's price experiences larger fluctuations and is considered to be riskier than ACSTX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SPIDX | ACSTX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.24% | 3.34% | +0.90% |
Volatility (6M)Calculated over the trailing 6-month period | 9.10% | 8.16% | +0.94% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.16% | 15.99% | +2.17% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.87% | 15.47% | +1.40% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.05% | 19.48% | -1.43% |