DIISX vs. VIGIX

Last updated Jun 23, 2026

DIISX (BNY Mellon International Stock Index Fund) and VIGIX (Vanguard Growth Index Fund Institutional Shares) are both mutual funds - DIISX is a Foreign Large Cap Equities fund managed by BNY Mellon, while VIGIX is a Large Cap Growth Equities fund tracking the CRSP US Large Cap Growth Index. Over the past 10 years, DIISX returned 8.39%/yr vs 18.14%/yr for VIGIX. A 0.57 correlation means they provide meaningful diversification when combined. DIISX charges 0.60%/yr vs 0.04%/yr for VIGIX.

Performance

DIISX vs. VIGIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BNY Mellon International Stock Index Fund (DIISX) and Vanguard Growth Index Fund Institutional Shares (VIGIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DIISX achieves a 10.23% return, which is significantly higher than VIGIX's 7.20% return. Over the past 10 years, DIISX has underperformed VIGIX with an annualized return of 8.39%, while VIGIX has yielded a comparatively higher 18.14% annualized return.

DIISX

• 1D: 0.69%
• 1M: 1.74%
• YTD: 10.23%
• 6M: 10.63%
• 1Y: 24.28%
• 3Y*: 13.28%
• 5Y*: 7.50%
• 10Y*: 8.39%

VIGIX

• 1D: 1.71%
• 1M: -0.56%
• YTD: 7.20%
• 6M: 6.59%
• 1Y: 25.68%
• 3Y*: 23.76%
• 5Y*: 14.15%
• 10Y*: 18.14%

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

DIISX vs. VIGIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DIISX BNY Mellon International Stock Index Fund	10.23%	30.36%	0.36%	13.93%	-14.57%	10.85%	7.52%	21.48%	-13.92%	24.46%
VIGIX Vanguard Growth Index Fund Institutional Shares	7.20%	19.44%	32.68%	46.77%	-33.13%	27.27%	40.19%	37.26%	-3.34%	27.81%

Correlation

The correlation between DIISX and VIGIX is 0.62, 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	0.62
Correlation (3Y) Calculated over the trailing 3-year period	0.58
Correlation (5Y) Calculated over the trailing 5-year period	0.64
Correlation (10Y) Calculated over the trailing 10-year period	0.64
Correlation (All Time) Calculated using the full available price history since May 14, 1998	0.57

The correlation between DIISX and VIGIX has been stable across timeframes, ranging from 0.57 to 0.64 - a consistent structural relationship.

Return for Risk

DIISX vs. VIGIX — Risk / Return Rank

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

DIISX

DIISX Risk / Return Rank: 34
DIISX Sharpe Ratio Rank: 33
DIISX Sortino Ratio Rank: 35
DIISX Omega Ratio Rank: 33
DIISX Calmar Ratio Rank: 33
DIISX Martin Ratio Rank: 35

VIGIX

VIGIX Risk / Return Rank: 26
VIGIX Sharpe Ratio Rank: 31
VIGIX Sortino Ratio Rank: 28
VIGIX Omega Ratio Rank: 29
VIGIX Calmar Ratio Rank: 20
VIGIX Martin Ratio Rank: 23

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.

DIISX vs. VIGIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BNY Mellon International Stock Index Fund (DIISX) and Vanguard Growth Index Fund Institutional Shares (VIGIX). 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.

	DIISX	VIGIX	Difference
Sharpe ratio: Return per unit of total volatility	1.55	1.50	+0.05
Sortino ratio: Return per unit of downside risk	2.29	2.05	+0.23
Omega ratio: Gain probability vs. loss probability	1.28	1.26	+0.02
Calmar ratio: Return relative to maximum drawdown	2.05	1.52	+0.52
Martin ratio: Return relative to average drawdown	7.35	5.24	+2.11

DIISX vs. VIGIX - Sharpe Ratio Comparison

The current DIISX Sharpe Ratio is 1.55, which is comparable to the VIGIX Sharpe Ratio of 1.50. The chart below compares the historical Sharpe Ratios of DIISX and VIGIX, 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

DIISX vs. VIGIX - Drawdown Comparison

The maximum DIISX drawdown since its inception was -60.03%, which is greater than VIGIX's maximum drawdown of -56.95%. Use the drawdown chart below to compare losses from any high point for DIISX and VIGIX.

Drawdown Indicators

	DIISX	VIGIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.03%	-56.95%	-3.08%
Max Drawdown (1Y) Largest decline over 1 year	-11.40%	-16.51%	+5.11%
Max Drawdown (3Y) Largest decline over 3 years	-16.26%	-23.03%	+6.77%
Max Drawdown (5Y) Largest decline over 5 years	-29.46%	-35.62%	+6.16%
Max Drawdown (10Y) Largest decline over 10 years	-34.08%	-35.62%	+1.54%
Current Drawdown Current decline from peak	-0.04%	-3.55%	+3.51%
Average Drawdown Average peak-to-trough decline	-14.80%	-16.25%	+1.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.17%	4.79%	-1.62%

Volatility

DIISX vs. VIGIX - Volatility Comparison

The current volatility for BNY Mellon International Stock Index Fund (DIISX) is 5.04%, while Vanguard Growth Index Fund Institutional Shares (VIGIX) has a volatility of 6.58%. This indicates that DIISX experiences smaller price fluctuations and is considered to be less risky than VIGIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DIISX	VIGIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.04%	6.58%	-1.54%
Volatility (6M) Calculated over the trailing 6-month period	12.62%	13.43%	-0.81%
Volatility (1Y) Calculated over the trailing 1-year period	15.09%	16.80%	-1.71%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.10%	22.48%	-6.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.62%	21.66%	-5.04%

DIISX vs. VIGIX - Expense Ratio Comparison

DIISX has a 0.60% expense ratio, which is higher than VIGIX's 0.04% expense ratio.

Dividends

DIISX vs. VIGIX - Dividend Comparison

DIISX's dividend yield for the trailing twelve months is around 4.16%, more than VIGIX's 0.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DIISX BNY Mellon International Stock Index Fund	4.16%	4.58%	0.27%	0.29%	2.23%	3.42%	1.62%	2.80%	2.66%	2.17%	2.89%	2.12%
VIGIX Vanguard Growth Index Fund Institutional Shares	0.38%	0.41%	0.47%	0.58%	0.70%	0.48%	0.66%	0.95%	1.32%	1.15%	1.40%	1.31%

Frequently Asked Questions

Can I hold both DIISX and VIGIX in my portfolio?

DIISX and VIGIX have a correlation of 0.62, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DIISX or VIGIX?

VIGIX has higher volatility (6.58%) compared to DIISX (5.04%). In terms of maximum drawdown, DIISX dropped -60.03% vs VIGIX's -56.95%.

Which has better risk-adjusted returns?

DIISX currently has the higher Sharpe Ratio (1.55 vs 1.50), 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.