VSGIX vs. FGROX

Last updated Jun 4, 2026

VSGIX (Vanguard Small-Cap Growth Index Fund Institutional Shares) and FGROX (Emerald Growth Fund Institutional Class) are both Small Cap Growth Equities funds. Over the past 10 years, VSGIX returned 11.86%/yr vs 15.70%/yr for FGROX. With a 0.95 correlation, they move nearly in lockstep. VSGIX charges 0.06%/yr vs 0.78%/yr for FGROX.

Performance

VSGIX vs. FGROX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX) and Emerald Growth Fund Institutional Class (FGROX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VSGIX achieves a 18.74% return, which is significantly lower than FGROX's 26.22% return. Over the past 10 years, VSGIX has underperformed FGROX with an annualized return of 11.86%, while FGROX has yielded a comparatively higher 15.70% annualized return.

VSGIX

• 1D: 0.72%
• 1M: 6.06%
• YTD: 18.74%
• 6M: 18.16%
• 1Y: 34.12%
• 3Y*: 18.14%
• 5Y*: 6.12%
• 10Y*: 11.86%

FGROX

• 1D: 1.61%
• 1M: 7.35%
• YTD: 26.22%
• 6M: 24.64%
• 1Y: 68.45%
• 3Y*: 29.82%
• 5Y*: 12.60%
• 10Y*: 15.70%

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

VSGIX vs. FGROX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VSGIX Vanguard Small-Cap Growth Index Fund Institutional Shares	18.74%	8.44%	14.95%	23.07%	-28.39%	5.70%	35.29%	32.77%	-5.70%	21.94%
FGROX Emerald Growth Fund Institutional Class	26.22%	31.85%	20.04%	19.04%	-24.42%	3.91%	38.92%	28.71%	-11.85%	28.11%

Correlation

The correlation between VSGIX and FGROX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Oct 21, 2008	0.95

The correlation between VSGIX and FGROX has been stable across timeframes, ranging from 0.92 to 0.95 - a consistent structural relationship.

Return for Risk

VSGIX vs. FGROX — Risk / Return Rank

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

VSGIX

VSGIX Risk / Return Rank: 48
VSGIX Sharpe Ratio Rank: 41
VSGIX Sortino Ratio Rank: 38
VSGIX Omega Ratio Rank: 35
VSGIX Calmar Ratio Rank: 68
VSGIX Martin Ratio Rank: 61

FGROX

FGROX Risk / Return Rank: 83
FGROX Sharpe Ratio Rank: 88
FGROX Sortino Ratio Rank: 73
FGROX Omega Ratio Rank: 66
FGROX Calmar Ratio Rank: 93
FGROX Martin Ratio Rank: 94

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.

VSGIX vs. FGROX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX) and Emerald Growth Fund Institutional Class (FGROX). 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.

	VSGIX	FGROX	Difference
Sharpe ratio: Return per unit of total volatility	1.86	2.90	-1.04
Sortino ratio: Return per unit of downside risk	2.56	3.57	-1.01
Omega ratio: Gain probability vs. loss probability	1.31	1.45	-0.14
Calmar ratio: Return relative to maximum drawdown	3.17	5.11	-1.94
Martin ratio: Return relative to average drawdown	12.10	21.59	-9.49
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VSGIX vs. FGROX - Sharpe Ratio Comparison

The current VSGIX Sharpe Ratio is 1.86, which is lower than the FGROX Sharpe Ratio of 2.90. The chart below compares the historical Sharpe Ratios of VSGIX and FGROX, 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

	VSGIX	FGROX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.86	2.90	-1.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.26	0.50	-0.24
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.52	0.63	-0.11
Sharpe Ratio (All Time) Calculated using the full available price history	0.41	0.52	-0.11

Drawdowns

VSGIX vs. FGROX - Drawdown Comparison

The maximum VSGIX drawdown since its inception was -58.66%, which is greater than FGROX's maximum drawdown of -41.48%. Use the drawdown chart below to compare losses from any high point for VSGIX and FGROX.

Drawdown Indicators

	VSGIX	FGROX	Difference
Max Drawdown Largest peak-to-trough decline	-58.66%	-41.48%	-17.18%
Max Drawdown (1Y) Largest decline over 1 year	-11.38%	-14.36%	+2.98%
Max Drawdown (3Y) Largest decline over 3 years	-27.47%	-28.61%	+1.14%
Max Drawdown (5Y) Largest decline over 5 years	-38.36%	-38.52%	+0.16%
Max Drawdown (10Y) Largest decline over 10 years	-38.70%	-41.48%	+2.78%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-11.34%	-10.25%	-1.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.98%	3.38%	-0.40%

Volatility

VSGIX vs. FGROX - Volatility Comparison

The current volatility for Vanguard Small-Cap Growth Index Fund Institutional Shares (VSGIX) is 5.28%, while Emerald Growth Fund Institutional Class (FGROX) has a volatility of 7.62%. This indicates that VSGIX experiences smaller price fluctuations and is considered to be less risky than FGROX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VSGIX	FGROX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.28%	7.62%	-2.34%
Volatility (6M) Calculated over the trailing 6-month period	14.85%	19.27%	-4.42%
Volatility (1Y) Calculated over the trailing 1-year period	19.45%	25.34%	-5.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.56%	25.58%	-2.02%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.98%	25.18%	-2.20%

VSGIX vs. FGROX - Expense Ratio Comparison

VSGIX has a 0.06% expense ratio, which is lower than FGROX's 0.78% expense ratio.

Dividends

VSGIX vs. FGROX - Dividend Comparison

VSGIX's dividend yield for the trailing twelve months is around 0.45%, less than FGROX's 9.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FGROX Emerald Growth Fund Institutional Class	9.02%	11.39%	13.92%	5.91%	8.13%	17.87%	8.04%	1.38%	11.36%	0.00%	0.00%	0.00%
VSGIX Vanguard Small-Cap Growth Index Fund Institutional Shares	0.45%	0.55%	0.55%	0.68%	0.56%	0.37%	0.45%	0.58%	0.80%	0.82%	1.09%	0.98%

Frequently Asked Questions

Can I hold both VSGIX and FGROX in my portfolio?

With a correlation of 0.92, VSGIX and FGROX 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.

Which is riskier, VSGIX or FGROX?

FGROX has higher volatility (7.62%) compared to VSGIX (5.28%). In terms of maximum drawdown, VSGIX dropped -58.66% vs FGROX's -41.48%.

Which has better risk-adjusted returns?

FGROX currently has the higher Sharpe Ratio (2.90 vs 1.86), 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.