FTXSX vs. FXAIX

Last updated Jun 23, 2026

FTXSX (FullerThaler Behavioral Small-Cap Growth Fund) and FXAIX (Fidelity 500 Index Fund) are both mutual funds - FTXSX is a Small Cap Growth Equities fund tracking the Russell 2000 Growth Index, while FXAIX is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 5 years, FTXSX returned 16.68%/yr vs 14.10%/yr for FXAIX. A 0.79 correlation means they provide meaningful diversification when combined. FTXSX charges 1.00%/yr vs 0.02%/yr for FXAIX.

Performance

FTXSX vs. FXAIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FullerThaler Behavioral Small-Cap Growth Fund (FTXSX) and Fidelity 500 Index Fund (FXAIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FTXSX achieves a 37.62% return, which is significantly higher than FXAIX's 10.19% return.

FTXSX

• 1D: 3.40%
• 1M: 5.43%
• YTD: 37.62%
• 6M: 33.57%
• 1Y: 70.00%
• 3Y*: 31.20%
• 5Y*: 16.68%
• 10Y*: —

FXAIX

• 1D: 1.09%
• 1M: 0.47%
• YTD: 10.19%
• 6M: 9.68%
• 1Y: 27.18%
• 3Y*: 20.98%
• 5Y*: 14.10%
• 10Y*: 15.58%

*Multi-year figures are annualized to reflect compound growth (CAGR)

FTXSX vs. FXAIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
FTXSX FullerThaler Behavioral Small-Cap Growth Fund	37.62%	12.44%	28.86%	33.15%	-27.48%	25.50%	51.32%	19.19%	-3.71%
FXAIX Fidelity 500 Index Fund	10.19%	17.84%	25.01%	26.29%	-18.14%	28.71%	18.42%	31.48%	-7.73%

Correlation

The correlation between FTXSX and FXAIX is 0.77, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.77
Correlation (3Y) Calculated over the trailing 3-year period	0.78
Correlation (5Y) Calculated over the trailing 5-year period	0.82
Correlation (All Time) Calculated using the full available price history since Jan 12, 2018	0.79

The correlation between FTXSX and FXAIX has been stable across timeframes, ranging from 0.77 to 0.82 - a consistent structural relationship.

Return for Risk

FTXSX vs. FXAIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

FTXSX

FTXSX Risk / Return Rank: 82
FTXSX Sharpe Ratio Rank: 85
FTXSX Sortino Ratio Rank: 66
FTXSX Omega Ratio Rank: 65
FTXSX Calmar Ratio Rank: 96
FTXSX Martin Ratio Rank: 96

FXAIX

FXAIX Risk / Return Rank: 66
FXAIX Sharpe Ratio Rank: 64
FXAIX Sortino Ratio Rank: 59
FXAIX Omega Ratio Rank: 61
FXAIX Calmar Ratio Rank: 68
FXAIX Martin Ratio Rank: 79

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

FTXSX vs. FXAIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FullerThaler Behavioral Small-Cap Growth Fund (FTXSX) and Fidelity 500 Index Fund (FXAIX). 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.

	FTXSX	FXAIX	Difference
Sharpe ratio: Return per unit of total volatility	2.56	2.17	+0.39
Sortino ratio: Return per unit of downside risk	3.09	2.93	+0.16
Omega ratio: Gain probability vs. loss probability	1.41	1.39	+0.01
Calmar ratio: Return relative to maximum drawdown	5.65	3.04	+2.61
Martin ratio: Return relative to average drawdown	22.27	13.75	+8.52

FTXSX vs. FXAIX - Sharpe Ratio Comparison

The current FTXSX Sharpe Ratio is 2.56, which is comparable to the FXAIX Sharpe Ratio of 2.17. The chart below compares the historical Sharpe Ratios of FTXSX and FXAIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

FTXSX vs. FXAIX - Drawdown Comparison

The maximum FTXSX drawdown since its inception was -45.03%, which is greater than FXAIX's maximum drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for FTXSX and FXAIX.

Drawdown Indicators

	FTXSX	FXAIX	Difference
Max Drawdown Largest peak-to-trough decline	-45.03%	-33.79%	-11.24%
Max Drawdown (1Y) Largest decline over 1 year	-12.37%	-8.89%	-3.48%
Max Drawdown (3Y) Largest decline over 3 years	-32.37%	-18.76%	-13.61%
Max Drawdown (5Y) Largest decline over 5 years	-39.58%	-24.50%	-15.08%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.79%	—
Current Drawdown Current decline from peak	0.00%	-1.36%	+1.36%
Average Drawdown Average peak-to-trough decline	-12.41%	-3.79%	-8.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.13%	1.96%	+1.17%

Volatility

FTXSX vs. FXAIX - Volatility Comparison

FullerThaler Behavioral Small-Cap Growth Fund (FTXSX) has a higher volatility of 10.14% compared to Fidelity 500 Index Fund (FXAIX) at 4.77%. This indicates that FTXSX's price experiences larger fluctuations and is considered to be riskier than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FTXSX	FXAIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.14%	4.77%	+5.37%
Volatility (6M) Calculated over the trailing 6-month period	21.74%	9.91%	+11.83%
Volatility (1Y) Calculated over the trailing 1-year period	27.32%	12.47%	+14.85%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.99%	17.01%	+9.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.75%	18.11%	+9.64%

FTXSX vs. FXAIX - Expense Ratio Comparison

FTXSX has a 1.00% expense ratio, which is higher than FXAIX's 0.02% expense ratio.

Dividends

FTXSX vs. FXAIX - Dividend Comparison

FTXSX has not paid dividends to shareholders, while FXAIX's dividend yield for the trailing twelve months is around 1.04%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FTXSX FullerThaler Behavioral Small-Cap Growth Fund	0.00%	0.00%	0.00%	0.00%	0.00%	17.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
FXAIX Fidelity 500 Index Fund	1.04%	1.11%	1.25%	1.45%	1.69%	1.22%	1.60%	2.06%	2.72%	1.97%	2.52%	2.83%

Frequently Asked Questions

Can I hold both FTXSX and FXAIX in my portfolio?

FTXSX and FXAIX have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FTXSX or FXAIX?

FTXSX has higher volatility (10.14%) compared to FXAIX (4.77%). In terms of maximum drawdown, FTXSX dropped -45.03% vs FXAIX's -33.79%.

Which has better risk-adjusted returns?

FTXSX currently has the higher Sharpe Ratio (2.56 vs 2.17), 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.