VTSAX vs. FSSNX

Last updated Jun 16, 2026

VTSAX (Vanguard Total Stock Market Index Fund Admiral Shares) and FSSNX (Fidelity Small Cap Index Fund) are both mutual funds - VTSAX is a Large Cap Blend Equities fund managed by Vanguard, while FSSNX is a Small Cap Blend Equities fund tracking the Russell 2000 Index. Over the past 10 years, VTSAX returned 15.01%/yr vs 11.42%/yr for FSSNX. Their correlation of 0.88 suggests significant overlap in exposure. VTSAX charges 0.04%/yr vs 0.03%/yr for FSSNX.

Performance

VTSAX vs. FSSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Total Stock Market Index Fund Admiral Shares (VTSAX) and Fidelity Small Cap Index Fund (FSSNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VTSAX achieves a 9.65% return, which is significantly lower than FSSNX's 19.27% return. Over the past 10 years, VTSAX has outperformed FSSNX with an annualized return of 15.01%, while FSSNX has yielded a comparatively lower 11.42% annualized return.

VTSAX

• 1D: 0.50%
• 1M: 1.05%
• YTD: 9.65%
• 6M: 9.97%
• 1Y: 26.30%
• 3Y*: 20.61%
• 5Y*: 12.20%
• 10Y*: 15.01%

FSSNX

• 1D: 0.79%
• 1M: 5.52%
• YTD: 19.27%
• 6M: 17.07%
• 1Y: 42.04%
• 3Y*: 17.54%
• 5Y*: 6.30%
• 10Y*: 11.42%

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

VTSAX vs. FSSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VTSAX Vanguard Total Stock Market Index Fund Admiral Shares	9.65%	17.12%	23.23%	26.51%	-19.52%	25.72%	20.98%	30.79%	-5.18%	21.16%
FSSNX Fidelity Small Cap Index Fund	19.27%	12.94%	11.71%	17.11%	-20.28%	14.70%	19.99%	25.70%	-11.24%	14.54%

Correlation

The correlation between VTSAX and FSSNX is 0.85, 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	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (10Y) Calculated over the trailing 10-year period	0.86
Correlation (All Time) Calculated using the full available price history since Sep 9, 2011	0.88

The correlation between VTSAX and FSSNX has been stable across timeframes, ranging from 0.83 to 0.88 - a consistent structural relationship.

Return for Risk

VTSAX vs. FSSNX — Risk / Return Rank

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

VTSAX

VTSAX Risk / Return Rank: 65
VTSAX Sharpe Ratio Rank: 62
VTSAX Sortino Ratio Rank: 57
VTSAX Omega Ratio Rank: 58
VTSAX Calmar Ratio Rank: 68
VTSAX Martin Ratio Rank: 79

FSSNX

FSSNX Risk / Return Rank: 69
FSSNX Sharpe Ratio Rank: 66
FSSNX Sortino Ratio Rank: 62
FSSNX Omega Ratio Rank: 51
FSSNX Calmar Ratio Rank: 85
FSSNX Martin Ratio Rank: 80

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.

VTSAX vs. FSSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Total Stock Market Index Fund Admiral Shares (VTSAX) and Fidelity Small Cap Index Fund (FSSNX). 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.

	VTSAX	FSSNX	Difference
Sharpe ratio: Return per unit of total volatility	1.96	2.01	-0.05
Sortino ratio: Return per unit of downside risk	2.67	2.77	-0.11
Omega ratio: Gain probability vs. loss probability	1.35	1.33	+0.02
Calmar ratio: Return relative to maximum drawdown	2.79	3.61	-0.81
Martin ratio: Return relative to average drawdown	12.56	12.77	-0.21

VTSAX vs. FSSNX - Sharpe Ratio Comparison

The current VTSAX Sharpe Ratio is 1.96, which is comparable to the FSSNX Sharpe Ratio of 2.01. The chart below compares the historical Sharpe Ratios of VTSAX and FSSNX, 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

VTSAX vs. FSSNX - Drawdown Comparison

The maximum VTSAX drawdown since its inception was -55.33%, which is greater than FSSNX's maximum drawdown of -41.72%. Use the drawdown chart below to compare losses from any high point for VTSAX and FSSNX.

Drawdown Indicators

	VTSAX	FSSNX	Difference
Max Drawdown Largest peak-to-trough decline	-55.33%	-41.72%	-13.61%
Max Drawdown (1Y) Largest decline over 1 year	-8.92%	-11.00%	+2.08%
Max Drawdown (3Y) Largest decline over 3 years	-19.36%	-27.45%	+8.09%
Max Drawdown (5Y) Largest decline over 5 years	-25.36%	-31.87%	+6.51%
Max Drawdown (10Y) Largest decline over 10 years	-34.97%	-41.72%	+6.75%
Current Drawdown Current decline from peak	-2.07%	0.00%	-2.07%
Average Drawdown Average peak-to-trough decline	-9.00%	-8.28%	-0.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.98%	3.11%	-1.13%

Volatility

VTSAX vs. FSSNX - Volatility Comparison

The current volatility for Vanguard Total Stock Market Index Fund Admiral Shares (VTSAX) is 4.59%, while Fidelity Small Cap Index Fund (FSSNX) has a volatility of 7.12%. This indicates that VTSAX experiences smaller price fluctuations and is considered to be less risky than FSSNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VTSAX	FSSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.59%	7.12%	-2.53%
Volatility (6M) Calculated over the trailing 6-month period	9.92%	14.34%	-4.42%
Volatility (1Y) Calculated over the trailing 1-year period	12.71%	19.72%	-7.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.43%	22.67%	-5.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.44%	23.49%	-5.05%

VTSAX vs. FSSNX - Expense Ratio Comparison

VTSAX has a 0.04% expense ratio, which is higher than FSSNX's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

VTSAX vs. FSSNX - Dividend Comparison

VTSAX's dividend yield for the trailing twelve months is around 1.02%, more than FSSNX's 0.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSSNX Fidelity Small Cap Index Fund	0.91%	1.08%	1.04%	1.43%	1.26%	3.92%	0.94%	2.96%	4.94%	3.37%	2.27%	2.66%
VTSAX Vanguard Total Stock Market Index Fund Admiral Shares	1.02%	1.11%	1.26%	1.42%	1.65%	1.20%	1.41%	1.76%	2.03%	1.71%	1.92%	1.98%

Frequently Asked Questions

Can I hold both VTSAX and FSSNX in my portfolio?

VTSAX and FSSNX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VTSAX or FSSNX?

FSSNX has higher volatility (7.12%) compared to VTSAX (4.59%). In terms of maximum drawdown, VTSAX dropped -55.33% vs FSSNX's -41.72%.

Which has better risk-adjusted returns?

FSSNX currently has the higher Sharpe Ratio (2.01 vs 1.96), 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.