ANOIX vs. ^GSPC
ANOIX (American Century Small Cap Growth Fund) is Small Cap Growth Equities fund managed by American Century, while ^GSPC (S&P 500 Index) is an index. Over the past 10 years, ANOIX returned 14.73%/yr vs 13.71%/yr for ^GSPC. Their correlation of 0.83 suggests significant overlap in exposure.
Performance
ANOIX vs. ^GSPC - Performance Comparison
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Returns By Period
In the year-to-date period, ANOIX achieves a 17.86% return, which is significantly higher than ^GSPC's 7.60% return. Over the past 10 years, ANOIX has outperformed ^GSPC with an annualized return of 14.73%, while ^GSPC has yielded a comparatively lower 13.71% annualized return.
ANOIX
- 1D
- 1.19%
- 1M
- 7.70%
- YTD
- 17.86%
- 6M
- 14.80%
- 1Y
- 27.99%
- 3Y*
- 16.70%
- 5Y*
- 5.20%
- 10Y*
- 14.73%
^GSPC
- 1D
- -1.44%
- 1M
- -1.45%
- YTD
- 7.60%
- 6M
- 6.59%
- 1Y
- 22.24%
- 3Y*
- 19.20%
- 5Y*
- 11.54%
- 10Y*
- 13.71%
ANOIX vs. ^GSPC - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
ANOIX American Century Small Cap Growth Fund | 17.86% | 9.00% | 14.90% | 17.13% | -26.41% | 7.80% | 51.07% | 36.75% | -4.84% | 25.83% |
^GSPC S&P 500 Index | 7.60% | 16.39% | 23.31% | 24.23% | -19.44% | 26.89% | 16.26% | 28.88% | -6.24% | 19.42% |
Correlation
The correlation between ANOIX and ^GSPC is 0.80, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.80 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.80 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.83 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.82 |
Correlation (All Time) Calculated using the full available price history since May 31, 2001 | 0.83 |
The correlation between ANOIX and ^GSPC has been stable across timeframes, ranging from 0.80 to 0.83 - a consistent structural relationship.
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Return for Risk
ANOIX vs. ^GSPC — Risk / Return Rank
ANOIX
^GSPC
ANOIX vs. ^GSPC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Small Cap Growth Fund (ANOIX) and S&P 500 Index (^GSPC). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| ANOIX | ^GSPC | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.36 | ||
| Sortino ratioReturn per unit of downside risk | -0.34 | ||
| Omega ratioGain probability vs. loss probability | 1.25 | 1.32 | -0.08 |
| Calmar ratioReturn relative to maximum drawdown | 2.36 | 2.46 | -0.10 |
| Martin ratioReturn relative to average drawdown | 8.83 | 10.92 | -2.09 |
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Drawdowns
ANOIX vs. ^GSPC - Drawdown Comparison
The maximum ANOIX drawdown since its inception was -59.47%, roughly equal to the maximum ^GSPC drawdown of -56.78%. Use the drawdown chart below to compare losses from any high point for ANOIX and ^GSPC.
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Drawdown Indicators
| ANOIX | ^GSPC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -59.47% | -56.78% | -2.69% |
Max Drawdown (1Y)Largest decline over 1 year | -12.49% | -9.10% | -3.39% |
Max Drawdown (3Y)Largest decline over 3 years | -25.57% | -18.90% | -6.67% |
Max Drawdown (5Y)Largest decline over 5 years | -37.15% | -25.43% | -11.72% |
Max Drawdown (10Y)Largest decline over 10 years | -39.07% | -33.92% | -5.15% |
Current DrawdownCurrent decline from peak | 0.00% | -3.21% | +3.21% |
Average DrawdownAverage peak-to-trough decline | -11.97% | -10.71% | -1.26% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.33% | 2.04% | +1.29% |
Volatility
ANOIX vs. ^GSPC - Volatility Comparison
American Century Small Cap Growth Fund (ANOIX) has a higher volatility of 6.99% compared to S&P 500 Index (^GSPC) at 4.89%. This indicates that ANOIX's price experiences larger fluctuations and is considered to be riskier than ^GSPC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| ANOIX | ^GSPC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.99% | 4.89% | +2.10% |
Volatility (6M)Calculated over the trailing 6-month period | 15.95% | 9.93% | +6.02% |
Volatility (1Y)Calculated over the trailing 1-year period | 20.71% | 12.57% | +8.14% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 23.08% | 17.00% | +6.08% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 23.37% | 18.08% | +5.29% |
Frequently Asked Questions
ANOIX and ^GSPC have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
ANOIX has higher volatility (6.99%) compared to ^GSPC (4.89%). In terms of maximum drawdown, ANOIX dropped -59.47% vs ^GSPC's -56.78%.
^GSPC currently has the higher Sharpe Ratio (1.78 vs 1.42), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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