VMNFX vs. FSSNX

Last updated Jun 5, 2026

VMNFX (Vanguard Market Neutral Fund Investor Shares) and FSSNX (Fidelity Small Cap Index Fund) are both mutual funds - VMNFX is a Long-Short fund managed by Vanguard, while FSSNX is a Small Cap Blend Equities fund tracking the Russell 2000 Index. Over the past 10 years, VMNFX returned 5.00%/yr vs 11.07%/yr for FSSNX. At a 0.02 correlation, their price movements are largely independent. VMNFX charges 1.31%/yr vs 0.03%/yr for FSSNX.

Performance

VMNFX vs. FSSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Market Neutral Fund Investor Shares (VMNFX) 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, VMNFX achieves a 12.03% return, which is significantly lower than FSSNX's 17.17% return. Over the past 10 years, VMNFX has underperformed FSSNX with an annualized return of 5.00%, while FSSNX has yielded a comparatively higher 11.07% annualized return.

VMNFX

• 1D: 0.00%
• 1M: 0.45%
• YTD: 12.03%
• 6M: 14.75%
• 1Y: 18.35%
• 3Y*: 13.20%
• 5Y*: 12.98%
• 10Y*: 5.00%

FSSNX

• 1D: -1.31%
• 1M: 1.83%
• YTD: 17.17%
• 6M: 15.04%
• 1Y: 39.80%
• 3Y*: 18.23%
• 5Y*: 6.38%
• 10Y*: 11.07%

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

VMNFX vs. FSSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VMNFX Vanguard Market Neutral Fund Investor Shares	12.03%	9.27%	5.78%	12.23%	13.48%	23.24%	-11.58%	-9.57%	0.60%	-4.89%
FSSNX Fidelity Small Cap Index Fund	17.17%	12.94%	11.71%	17.11%	-20.28%	14.70%	19.99%	25.70%	-11.24%	14.54%

Correlation

The correlation between VMNFX and FSSNX is -0.17, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.17
Correlation (3Y) Calculated over the trailing 3-year period	-0.11
Correlation (5Y) Calculated over the trailing 5-year period	-0.08
Correlation (10Y) Calculated over the trailing 10-year period	0.03
Correlation (All Time) Calculated using the full available price history since Sep 12, 2011	0.02

The correlation between VMNFX and FSSNX shifts across timeframes, from -0.17 (1 year) to 0.03 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

VMNFX vs. FSSNX — Risk / Return Rank

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

VMNFX

VMNFX Risk / Return Rank: 65
VMNFX Sharpe Ratio Rank: 62
VMNFX Sortino Ratio Rank: 70
VMNFX Omega Ratio Rank: 59
VMNFX Calmar Ratio Rank: 83
VMNFX Martin Ratio Rank: 53

FSSNX

FSSNX Risk / Return Rank: 56
FSSNX Sharpe Ratio Rank: 49
FSSNX Sortino Ratio Rank: 47
FSSNX Omega Ratio Rank: 40
FSSNX Calmar Ratio Rank: 79
FSSNX Martin Ratio Rank: 66

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.

VMNFX vs. FSSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Market Neutral Fund Investor Shares (VMNFX) 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.

	VMNFX	FSSNX	Difference
Sharpe ratio: Return per unit of total volatility	2.33	2.07	+0.26
Sortino ratio: Return per unit of downside risk	3.51	2.88	+0.63
Omega ratio: Gain probability vs. loss probability	1.43	1.34	+0.09
Calmar ratio: Return relative to maximum drawdown	3.89	3.61	+0.28
Martin ratio: Return relative to average drawdown	10.80	12.80	-2.01
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VMNFX vs. FSSNX - Sharpe Ratio Comparison

The current VMNFX Sharpe Ratio is 2.33, which is comparable to the FSSNX Sharpe Ratio of 2.07. The chart below compares the historical Sharpe Ratios of VMNFX 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.

Sharpe Ratios by Period

	VMNFX	FSSNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.33	2.07	+0.26
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.81	0.28	+1.53
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.79	0.47	+0.31
Sharpe Ratio (All Time) Calculated using the full available price history	0.34	0.53	-0.20

Drawdowns

VMNFX vs. FSSNX - Drawdown Comparison

The maximum VMNFX drawdown since its inception was -26.42%, smaller than the maximum FSSNX drawdown of -41.72%. Use the drawdown chart below to compare losses from any high point for VMNFX and FSSNX.

Drawdown Indicators

	VMNFX	FSSNX	Difference
Max Drawdown Largest peak-to-trough decline	-26.42%	-41.72%	+15.30%
Max Drawdown (1Y) Largest decline over 1 year	-4.65%	-11.00%	+6.35%
Max Drawdown (3Y) Largest decline over 3 years	-5.44%	-27.45%	+22.01%
Max Drawdown (5Y) Largest decline over 5 years	-6.75%	-31.87%	+25.12%
Max Drawdown (10Y) Largest decline over 10 years	-25.09%	-41.72%	+16.63%
Current Drawdown Current decline from peak	0.00%	-1.44%	+1.44%
Average Drawdown Average peak-to-trough decline	-8.76%	-8.29%	-0.47%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.68%	3.09%	-1.41%

Volatility

VMNFX vs. FSSNX - Volatility Comparison

The current volatility for Vanguard Market Neutral Fund Investor Shares (VMNFX) is 1.97%, while Fidelity Small Cap Index Fund (FSSNX) has a volatility of 5.74%. This indicates that VMNFX 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

	VMNFX	FSSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.97%	5.74%	-3.77%
Volatility (6M) Calculated over the trailing 6-month period	5.75%	13.60%	-7.85%
Volatility (1Y) Calculated over the trailing 1-year period	7.79%	19.19%	-11.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.21%	22.59%	-15.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.39%	23.45%	-17.06%

VMNFX vs. FSSNX - Expense Ratio Comparison

VMNFX has a 1.31% expense ratio, which is higher than FSSNX's 0.03% expense ratio.

Dividends

VMNFX vs. FSSNX - Dividend Comparison

VMNFX's dividend yield for the trailing twelve months is around 3.13%, more than FSSNX's 0.92% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSSNX Fidelity Small Cap Index Fund	0.92%	1.08%	1.04%	1.43%	1.26%	3.92%	0.94%	2.96%	4.94%	3.37%	2.27%	2.66%
VMNFX Vanguard Market Neutral Fund Investor Shares	3.13%	3.53%	5.61%	5.09%	0.75%	0.16%	0.81%	3.16%	0.94%	1.07%	0.38%	0.02%

Frequently Asked Questions

Can I hold both VMNFX and FSSNX in my portfolio?

VMNFX and FSSNX have a correlation of -0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VMNFX or FSSNX?

FSSNX has higher volatility (5.74%) compared to VMNFX (1.97%). In terms of maximum drawdown, VMNFX dropped -26.42% vs FSSNX's -41.72%.

Which has better risk-adjusted returns?

VMNFX currently has the higher Sharpe Ratio (2.33 vs 2.07), 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.