VPKIX vs. VEMPX
VPKIX (Vanguard Pacific Stock Index Fund Institutional Shares) and VEMPX (Vanguard Extended Market Index Fund Institutional Plus Shares) are both mutual funds - VPKIX is a Asia Pacific Equities fund managed by Vanguard, while VEMPX is a Mid Cap Blend Equities fund managed by Vanguard. Over the past 10 years, VPKIX returned 10.86%/yr vs 12.21%/yr for VEMPX. A 0.70 correlation means they provide meaningful diversification when combined. VPKIX charges 0.08%/yr vs 0.04%/yr for VEMPX.
Performance
VPKIX vs. VEMPX - Performance Comparison
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Returns By Period
In the year-to-date period, VPKIX achieves a 30.38% return, which is significantly higher than VEMPX's 14.93% return. Over the past 10 years, VPKIX has underperformed VEMPX with an annualized return of 10.86%, while VEMPX has yielded a comparatively higher 12.21% annualized return.
VPKIX
- 1D
- -0.22%
- 1M
- 9.82%
- YTD
- 30.38%
- 6M
- 33.47%
- 1Y
- 54.12%
- 3Y*
- 23.38%
- 5Y*
- 10.61%
- 10Y*
- 10.86%
VEMPX
- 1D
- 1.07%
- 1M
- 5.80%
- YTD
- 14.93%
- 6M
- 13.66%
- 1Y
- 30.15%
- 3Y*
- 20.16%
- 5Y*
- 6.93%
- 10Y*
- 12.21%
VPKIX vs. VEMPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VPKIX Vanguard Pacific Stock Index Fund Institutional Shares | 30.38% | 33.12% | 1.29% | 15.58% | -15.20% | 1.47% | 16.54% | 17.61% | -13.87% | 28.55% |
VEMPX Vanguard Extended Market Index Fund Institutional Plus Shares | 14.93% | 11.43% | 15.50% | 26.98% | -26.45% | 12.48% | 32.24% | 28.06% | -9.35% | 18.13% |
Correlation
The correlation between VPKIX and VEMPX 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 | 0.66 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.69 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.69 |
Correlation (All Time) Calculated using the full available price history since Dec 14, 2010 | 0.70 |
The correlation between VPKIX and VEMPX has been stable across timeframes, ranging from 0.62 to 0.70 - a consistent structural relationship.
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Return for Risk
VPKIX vs. VEMPX — Risk / Return Rank
VPKIX
VEMPX
VPKIX vs. VEMPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Pacific Stock Index Fund Institutional Shares (VPKIX) and Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX). 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.
| VPKIX | VEMPX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.01 | ||
| Sortino ratioReturn per unit of downside risk | +1.08 | ||
| Omega ratioGain probability vs. loss probability | 1.52 | 1.32 | +0.20 |
| Calmar ratioReturn relative to maximum drawdown | 3.97 | 3.13 | +0.83 |
| Martin ratioReturn relative to average drawdown | 15.35 | 11.09 | +4.27 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| VPKIX | VEMPX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.88 | 1.87 | +1.01 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.65 | 0.31 | +0.34 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.67 | 0.55 | +0.12 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.28 | 0.55 | -0.27 |
Drawdowns
VPKIX vs. VEMPX - Drawdown Comparison
The maximum VPKIX drawdown since its inception was -55.26%, which is greater than VEMPX's maximum drawdown of -41.62%. Use the drawdown chart below to compare losses from any high point for VPKIX and VEMPX.
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Drawdown Indicators
| VPKIX | VEMPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.26% | -41.62% | -13.64% |
Max Drawdown (1Y)Largest decline over 1 year | -13.40% | -10.25% | -3.15% |
Max Drawdown (3Y)Largest decline over 3 years | -16.38% | -26.83% | +10.45% |
Max Drawdown (5Y)Largest decline over 5 years | -31.12% | -36.32% | +5.20% |
Max Drawdown (10Y)Largest decline over 10 years | -33.62% | -41.62% | +8.00% |
Current DrawdownCurrent decline from peak | -0.22% | 0.00% | -0.22% |
Average DrawdownAverage peak-to-trough decline | -15.44% | -7.97% | -7.47% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.46% | 2.89% | +0.57% |
Volatility
VPKIX vs. VEMPX - Volatility Comparison
Vanguard Pacific Stock Index Fund Institutional Shares (VPKIX) has a higher volatility of 6.42% compared to Vanguard Extended Market Index Fund Institutional Plus Shares (VEMPX) at 4.69%. This indicates that VPKIX's price experiences larger fluctuations and is considered to be riskier than VEMPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VPKIX | VEMPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.42% | 4.69% | +1.73% |
Volatility (6M)Calculated over the trailing 6-month period | 15.13% | 12.46% | +2.67% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.52% | 17.17% | +1.35% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.45% | 22.34% | -5.89% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 16.25% | 22.36% | -6.11% |
VPKIX vs. VEMPX - Expense Ratio Comparison
VPKIX has a 0.08% expense ratio, which is higher than VEMPX's 0.04% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
VPKIX vs. VEMPX - Dividend Comparison
VPKIX's dividend yield for the trailing twelve months is around 2.72%, more than VEMPX's 1.02% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VEMPX Vanguard Extended Market Index Fund Institutional Plus Shares | 1.02% | 1.15% | 1.11% | 1.27% | 1.17% | 1.15% | 1.09% | 1.32% | 1.68% | 1.27% | 1.46% | 1.39% |
VPKIX Vanguard Pacific Stock Index Fund Institutional Shares | 2.72% | 4.00% | 3.15% | 3.11% | 2.74% | 3.17% | 1.81% | 2.85% | 3.05% | 2.60% | 2.67% | 2.45% |
Frequently Asked Questions
VPKIX and VEMPX 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.
VPKIX has higher volatility (6.42%) compared to VEMPX (4.69%). In terms of maximum drawdown, VPKIX dropped -55.26% vs VEMPX's -41.62%.
VPKIX currently has the higher Sharpe Ratio (2.88 vs 1.87), 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.
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