ANTSX vs. FSISX
ANTSX (American Century International Small-Mid Cap Fund) and FSISX (Fidelity SAI International Small Cap Index Fund) are both Foreign Small & Mid Cap Equities funds. Over the past 5 years, ANTSX returned 2.51%/yr vs 6.02%/yr for FSISX. Their correlation of 0.92 suggests significant overlap in exposure. ANTSX charges 1.44%/yr vs 0.10%/yr for FSISX.
Performance
ANTSX vs. FSISX - Performance Comparison
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Returns By Period
The year-to-date returns for both stocks are quite close, with ANTSX having a 9.86% return and FSISX slightly lower at 9.43%.
ANTSX
- 1D
- 0.70%
- 1M
- -0.23%
- YTD
- 9.86%
- 6M
- 9.58%
- 1Y
- 23.38%
- 3Y*
- 12.54%
- 5Y*
- 2.51%
- 10Y*
- 7.16%
FSISX
- 1D
- 0.18%
- 1M
- -0.26%
- YTD
- 9.43%
- 6M
- 10.28%
- 1Y
- 24.45%
- 3Y*
- 15.40%
- 5Y*
- 6.02%
- 10Y*
- —
ANTSX vs. FSISX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
ANTSX American Century International Small-Mid Cap Fund | 9.86% | 27.36% | 3.22% | 3.60% | -28.33% | 3.52% |
FSISX Fidelity SAI International Small Cap Index Fund | 9.43% | 32.61% | 1.74% | 13.23% | -21.18% | -0.40% |
Correlation
The correlation between ANTSX and FSISX is 0.91, 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 | 0.91 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.90 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.92 |
Correlation (All Time) Calculated using the full available price history since May 27, 2021 | 0.92 |
The correlation between ANTSX and FSISX has been stable across timeframes, ranging from 0.90 to 0.92 - a consistent structural relationship.
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Return for Risk
ANTSX vs. FSISX — Risk / Return Rank
ANTSX
FSISX
ANTSX vs. FSISX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century International Small-Mid Cap Fund (ANTSX) and Fidelity SAI International Small Cap Index Fund (FSISX). 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.
| ANTSX | FSISX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.45 | ||
| Sortino ratioReturn per unit of downside risk | -0.61 | ||
| Omega ratioGain probability vs. loss probability | 1.23 | 1.31 | -0.08 |
| Calmar ratioReturn relative to maximum drawdown | 1.51 | 2.01 | -0.50 |
| Martin ratioReturn relative to average drawdown | 5.54 | 7.37 | -1.83 |
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Drawdowns
ANTSX vs. FSISX - Drawdown Comparison
The maximum ANTSX drawdown since its inception was -43.68%, which is greater than FSISX's maximum drawdown of -36.84%. Use the drawdown chart below to compare losses from any high point for ANTSX and FSISX.
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Drawdown Indicators
| ANTSX | FSISX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -43.68% | -36.84% | -6.84% |
Max Drawdown (1Y)Largest decline over 1 year | -14.83% | -11.73% | -3.10% |
Max Drawdown (3Y)Largest decline over 3 years | -21.24% | -14.75% | -6.49% |
Max Drawdown (5Y)Largest decline over 5 years | -40.28% | -36.84% | -3.44% |
Max Drawdown (10Y)Largest decline over 10 years | -43.68% | — | — |
Current DrawdownCurrent decline from peak | -2.71% | -2.07% | -0.64% |
Average DrawdownAverage peak-to-trough decline | -14.52% | -13.01% | -1.51% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.04% | 3.19% | +0.85% |
Volatility
ANTSX vs. FSISX - Volatility Comparison
American Century International Small-Mid Cap Fund (ANTSX) has a higher volatility of 6.15% compared to Fidelity SAI International Small Cap Index Fund (FSISX) at 4.45%. This indicates that ANTSX's price experiences larger fluctuations and is considered to be riskier than FSISX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| ANTSX | FSISX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.15% | 4.45% | +1.70% |
Volatility (6M)Calculated over the trailing 6-month period | 15.28% | 11.37% | +3.91% |
Volatility (1Y)Calculated over the trailing 1-year period | 17.84% | 13.85% | +3.99% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.85% | 15.95% | +2.90% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.86% | 15.89% | +2.97% |
ANTSX vs. FSISX - Expense Ratio Comparison
ANTSX has a 1.44% expense ratio, which is higher than FSISX's 0.10% expense ratio.
Dividends
ANTSX vs. FSISX - Dividend Comparison
ANTSX's dividend yield for the trailing twelve months is around 1.63%, less than FSISX's 3.38% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
ANTSX American Century International Small-Mid Cap Fund | 1.63% | 1.79% | 1.62% | 1.10% | 0.00% | 21.47% | 3.16% | 1.69% | 15.05% | 4.40% |
FSISX Fidelity SAI International Small Cap Index Fund | 3.38% | 3.70% | 3.33% | 3.13% | 3.02% | 1.30% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
With a correlation of 0.91, ANTSX and FSISX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
ANTSX has higher volatility (6.15%) compared to FSISX (4.45%). In terms of maximum drawdown, ANTSX dropped -43.68% vs FSISX's -36.84%.
FSISX currently has the higher Sharpe Ratio (1.71 vs 1.26), 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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