FERGX vs. VFINX

Last updated Aug 1, 2026

FERGX (Fidelity SAI Emerging Markets Index Fund) and VFINX (Vanguard 500 Index Fund Investor Shares) are both mutual funds - FERGX is a Emerging Markets Equities fund managed by Fidelity, while VFINX is a Large Cap Blend Equities fund tracking the S&P 500 Index. Over the past 5 years, FERGX returned 6.96%/yr vs 12.53%/yr for VFINX. Their 0.64 correlation means they have sometimes moved together and sometimes differently. FERGX charges 0.07%/yr vs 0.14%/yr for VFINX.

Performance

FERGX vs. VFINX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity SAI Emerging Markets Index Fund (FERGX) and Vanguard 500 Index Fund Investor Shares (VFINX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FERGX achieves a 16.06% return, which is significantly higher than VFINX's 9.27% return.

FERGX

• 1D: 4.02%
• 1M: -3.54%
• 6M: 7.29%
• YTD: 16.06%
• 1Y: 33.70%
• 3Y*: 17.54%
• 5Y*: 6.96%
• 10Y*: —
• ALL TIME*: 8.71%

VFINX

• 1D: 1.66%
• 1M: -0.57%
• 6M: 7.72%
• YTD: 9.27%
• 1Y: 20.48%
• 3Y*: 18.88%
• 5Y*: 12.53%
• 10Y*: 14.85%
• ALL TIME*: 10.68%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
FERGX Fidelity SAI Emerging Markets Index Fund	$0.00	$0.00	$0.00
VFINX Vanguard 500 Index Fund Investor Shares	$0.00	$0.00	$0.00

FERGX vs. VFINX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FERGX Fidelity SAI Emerging Markets Index Fund	16.06%	33.86%	6.59%	9.41%	-20.19%	-3.05%	17.46%	18.22%	-14.52%	33.62%
VFINX Vanguard 500 Index Fund Investor Shares	9.27%	17.71%	24.84%	26.12%	-18.24%	28.53%	18.20%	31.33%	-4.55%	21.66%

Correlation

The correlation between FERGX and VFINX is 0.73, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.73
Correlation (3Y) Balances recent behavior with more history.	0.64
Correlation (5Y) Shows whether the relationship held over a longer period.	0.63
Correlation (All Time) Calculated using the full available price history since Jan 3, 2017	0.64

The correlation between FERGX and VFINX shifts across timeframes, from 0.63 (5 years) to 0.73 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

FERGX vs. VFINX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

FERGX

FERGX Risk / Return Rank: 59
FERGX Sharpe Ratio Rank: 57
FERGX Sortino Ratio Rank: 50
FERGX Omega Ratio Rank: 62
FERGX Calmar Ratio Rank: 71
FERGX Martin Ratio Rank: 56

VFINX

VFINX Risk / Return Rank: 62
VFINX Sharpe Ratio Rank: 59
VFINX Sortino Ratio Rank: 56
VFINX Omega Ratio Rank: 57
VFINX Calmar Ratio Rank: 63
VFINX Martin Ratio Rank: 75

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

FERGX vs. VFINX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI Emerging Markets Index Fund (FERGX) and Vanguard 500 Index Fund Investor Shares (VFINX). 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.

	FERGX	VFINX	Difference
Sharpe ratio: Return per unit of total volatility	1.40	1.42	-0.02
Sortino ratio: Return per unit of downside risk	1.89	1.98	-0.09
Omega ratio: Gain probability vs. loss probability	1.27	1.25	+0.02
Calmar ratio: Return relative to maximum drawdown	2.28	2.04	+0.24
Martin ratio: Return relative to average drawdown	7.27	8.76	-1.49

FERGX vs. VFINX - Sharpe Ratio Comparison

The current FERGX Sharpe Ratio is 1.40, which is comparable to the VFINX Sharpe Ratio of 1.42. The chart below compares the historical Sharpe Ratios of FERGX and VFINX, 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

FERGX vs. VFINX - Drawdown Comparison

The maximum FERGX drawdown since its inception was -39.27%, smaller than the maximum VFINX drawdown of -55.25%. Use the drawdown chart below to compare losses from any high point for FERGX and VFINX.

Drawdown Indicators

	FERGX	VFINX	Difference
Max Drawdown Largest peak-to-trough decline	-39.27%	-55.25%	+15.98%
Max Drawdown (1Y) Largest decline over 1 year	-14.00%	-8.92%	-5.08%
Max Drawdown (3Y) Largest decline over 3 years	-16.20%	-18.76%	+2.56%
Max Drawdown (5Y) Largest decline over 5 years	-34.56%	-24.59%	-9.97%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.83%	—
Current Drawdown Current decline from peak	-10.54%	-2.13%	-8.41%
Average Drawdown Average peak-to-trough decline	-14.19%	-8.26%	-5.93%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.37%	2.08%	+2.29%

Volatility

FERGX vs. VFINX - Volatility Comparison

Fidelity SAI Emerging Markets Index Fund (FERGX) has a higher volatility of 9.51% compared to Vanguard 500 Index Fund Investor Shares (VFINX) at 3.44%. This indicates that FERGX's price experiences larger fluctuations and is considered to be riskier than VFINX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FERGX	VFINX	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.51%	3.44%	+6.07%
Volatility (6M) Calculated over the trailing 6-month period	20.94%	10.10%	+10.84%
Volatility (1Y) Calculated over the trailing 1-year period	22.79%	12.86%	+9.93%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.25%	17.01%	+1.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.46%	18.07%	+0.39%

FERGX vs. VFINX - Expense Ratio Comparison

FERGX has a 0.08% expense ratio, which is lower than VFINX's 0.14% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

FERGX vs. VFINX - Dividend Comparison

FERGX's dividend yield for the trailing twelve months is around 2.30%, more than VFINX's 0.97% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FERGX Fidelity SAI Emerging Markets Index Fund	2.30%	2.67%	2.40%	2.67%	2.51%	2.90%	1.49%	2.49%	2.58%	0.58%	0.00%	0.00%
VFINX Vanguard 500 Index Fund Investor Shares	0.97%	1.02%	1.14%	1.36%	1.57%	1.15%	1.45%	1.77%	1.94%	1.69%	1.92%	1.99%

Frequently Asked Questions

Can I hold both FERGX and VFINX in my portfolio?

FERGX and VFINX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FERGX or VFINX?

FERGX has higher volatility (9.51%) compared to VFINX (3.44%). In terms of maximum drawdown, FERGX dropped -39.27% vs VFINX's -55.25%.

Which has better risk-adjusted returns?

VFINX currently has the higher Sharpe Ratio (1.42 vs 1.40), 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.