VDVIX vs. KGIIX

Last updated Aug 1, 2026

VDVIX (Vanguard Developed Markets Index Fund Investor Shares) and KGIIX (Kopernik International Fund) are both Foreign Large Cap Equities funds. Over the past 10 years, VDVIX returned 9.94%/yr vs 9.01%/yr for KGIIX. Their 0.61 correlation means they have sometimes moved together and sometimes differently. VDVIX charges 0.16%/yr vs 1.04%/yr for KGIIX.

Performance

VDVIX vs. KGIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Developed Markets Index Fund Investor Shares (VDVIX) and Kopernik International Fund (KGIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VDVIX achieves a 14.56% return, which is significantly higher than KGIIX's 5.87% return. Over the past 10 years, VDVIX has outperformed KGIIX with an annualized return of 9.94%, while KGIIX has yielded a comparatively lower 9.01% annualized return.

VDVIX

• 1D: 3.15%
• 1M: 0.80%
• 6M: 8.09%
• YTD: 14.56%
• 1Y: 30.50%
• 3Y*: 17.80%
• 5Y*: 9.79%
• 10Y*: 9.94%
• ALL TIME*: 7.61%

KGIIX

• 1D: 1.39%
• 1M: 3.46%
• 6M: -2.31%
• YTD: 5.87%
• 1Y: 25.82%
• 3Y*: 17.26%
• 5Y*: 8.94%
• 10Y*: 9.01%
• ALL TIME*: 11.44%

*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)
KGIIX Kopernik International Fund	$0.00	$0.00	$0.00
VDVIX Vanguard Developed Markets Index Fund Investor Shares	$0.00	$0.00	$0.00

VDVIX vs. KGIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VDVIX Vanguard Developed Markets Index Fund Investor Shares	14.56%	34.96%	2.95%	17.59%	-15.41%	11.31%	10.10%	21.95%	-14.59%	26.30%
KGIIX Kopernik International Fund	5.87%	54.97%	-7.01%	13.86%	-14.05%	16.62%	18.94%	16.37%	-6.24%	10.50%

Correlation

The correlation between VDVIX and KGIIX is 0.61, 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.	0.61
Correlation (3Y) Balances recent behavior with more history.	0.52
Correlation (5Y) Shows whether the relationship held over a longer period.	0.63
Correlation (10Y) Provides a long-term view across more market conditions.	0.61
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016	0.61

The correlation between VDVIX and KGIIX shifts across timeframes, from 0.52 (3 years) to 0.63 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

VDVIX vs. KGIIX — Risk / Return Rank

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

VDVIX

VDVIX Risk / Return Rank: 72
VDVIX Sharpe Ratio Rank: 72
VDVIX Sortino Ratio Rank: 68
VDVIX Omega Ratio Rank: 70
VDVIX Calmar Ratio Rank: 75
VDVIX Martin Ratio Rank: 74

KGIIX

KGIIX Risk / Return Rank: 66
KGIIX Sharpe Ratio Rank: 80
KGIIX Sortino Ratio Rank: 73
KGIIX Omega Ratio Rank: 76
KGIIX Calmar Ratio Rank: 64
KGIIX Martin Ratio Rank: 37

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.

VDVIX vs. KGIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Developed Markets Index Fund Investor Shares (VDVIX) and Kopernik International Fund (KGIIX). 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.

	VDVIX	KGIIX	Difference
Sharpe ratio: Return per unit of total volatility	1.74	1.89	-0.16
Sortino ratio: Return per unit of downside risk	2.39	2.47	-0.08
Omega ratio: Gain probability vs. loss probability	1.32	1.34	-0.02
Calmar ratio: Return relative to maximum drawdown	2.49	2.11	+0.38
Martin ratio: Return relative to average drawdown	9.29	5.33	+3.96

VDVIX vs. KGIIX - Sharpe Ratio Comparison

The current VDVIX Sharpe Ratio is 1.74, which is comparable to the KGIIX Sharpe Ratio of 1.89. The chart below compares the historical Sharpe Ratios of VDVIX and KGIIX, 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

VDVIX vs. KGIIX - Drawdown Comparison

The maximum VDVIX drawdown since its inception was -35.78%, which is greater than KGIIX's maximum drawdown of -27.81%. Use the drawdown chart below to compare losses from any high point for VDVIX and KGIIX.

Drawdown Indicators

	VDVIX	KGIIX	Difference
Max Drawdown Largest peak-to-trough decline	-35.78%	-27.81%	-7.97%
Max Drawdown (1Y) Largest decline over 1 year	-11.71%	-11.96%	+0.25%
Max Drawdown (3Y) Largest decline over 3 years	-13.21%	-13.58%	+0.37%
Max Drawdown (5Y) Largest decline over 5 years	-29.85%	-27.81%	-2.04%
Max Drawdown (10Y) Largest decline over 10 years	-35.78%	-27.81%	-7.97%
Current Drawdown Current decline from peak	-1.67%	-7.70%	+6.03%
Average Drawdown Average peak-to-trough decline	-7.11%	-6.16%	-0.95%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.13%	4.73%	-1.60%

Volatility

VDVIX vs. KGIIX - Volatility Comparison

Vanguard Developed Markets Index Fund Investor Shares (VDVIX) has a higher volatility of 5.78% compared to Kopernik International Fund (KGIIX) at 2.95%. This indicates that VDVIX's price experiences larger fluctuations and is considered to be riskier than KGIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VDVIX	KGIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.78%	2.95%	+2.83%
Volatility (6M) Calculated over the trailing 6-month period	14.79%	10.51%	+4.28%
Volatility (1Y) Calculated over the trailing 1-year period	16.82%	13.35%	+3.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.24%	13.27%	+2.97%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.43%	12.66%	+3.77%

VDVIX vs. KGIIX - Expense Ratio Comparison

VDVIX has a 0.16% expense ratio, which is lower than KGIIX's 1.04% expense ratio.

Dividends

VDVIX vs. KGIIX - Dividend Comparison

VDVIX's dividend yield for the trailing twelve months is around 2.43%, less than KGIIX's 13.47% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
KGIIX Kopernik International Fund	13.47%	14.26%	0.48%	12.56%	2.46%	5.77%	2.89%	2.50%	1.19%	1.35%	0.33%	0.00%
VDVIX Vanguard Developed Markets Index Fund Investor Shares	2.43%	3.11%	3.24%	3.05%	2.78%	3.04%	1.94%	2.94%	3.22%	2.68%	2.95%	2.79%

Frequently Asked Questions

Can I hold both VDVIX and KGIIX in my portfolio?

VDVIX and KGIIX have a correlation of 0.61, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VDVIX or KGIIX?

VDVIX has higher volatility (5.78%) compared to KGIIX (2.95%). In terms of maximum drawdown, VDVIX dropped -35.78% vs KGIIX's -27.81%.

Which has better risk-adjusted returns?

KGIIX currently has the higher Sharpe Ratio (1.89 vs 1.74), 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.