VWILX vs. PIOBX

Last updated Jun 4, 2026

VWILX (Vanguard International Growth Fund Admiral Shares) and PIOBX (Pioneer Bond Fund) are both mutual funds - VWILX is a Large Cap Growth Equities fund managed by Vanguard, while PIOBX is a Intermediate Core-Plus Bond fund managed by Amundi. Over the past 10 years, VWILX returned 9.94%/yr vs 2.01%/yr for PIOBX. At a correlation of -0.04, they often move in opposite directions. VWILX charges 0.32%/yr vs 0.79%/yr for PIOBX.

Performance

VWILX vs. PIOBX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard International Growth Fund Admiral Shares (VWILX) and Pioneer Bond Fund (PIOBX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VWILX achieves a 6.25% return, which is significantly higher than PIOBX's 0.45% return. Over the past 10 years, VWILX has outperformed PIOBX with an annualized return of 9.94%, while PIOBX has yielded a comparatively lower 2.01% annualized return.

VWILX

• 1D: 0.35%
• 1M: 4.18%
• YTD: 6.25%
• 6M: 6.75%
• 1Y: 13.81%
• 3Y*: 12.51%
• 5Y*: -1.21%
• 10Y*: 9.94%

PIOBX

• 1D: 0.00%
• 1M: 0.34%
• YTD: 0.45%
• 6M: 0.43%
• 1Y: 5.78%
• 3Y*: 4.18%
• 5Y*: -0.04%
• 10Y*: 2.01%

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

VWILX vs. PIOBX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VWILX Vanguard International Growth Fund Admiral Shares	6.25%	20.08%	9.18%	14.80%	-30.80%	-12.81%	59.77%	31.50%	-12.58%	43.17%
PIOBX Pioneer Bond Fund	0.45%	8.09%	1.22%	5.68%	-14.96%	0.36%	8.51%	8.95%	-0.87%	4.24%

Correlation

The correlation between VWILX and PIOBX is 0.27, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.27
Correlation (3Y) Calculated over the trailing 3-year period	0.20
Correlation (5Y) Calculated over the trailing 5-year period	0.15
Correlation (10Y) Calculated over the trailing 10-year period	0.08
Correlation (All Time) Calculated using the full available price history since Aug 14, 2001	-0.04

The correlation between VWILX and PIOBX shifts across timeframes, from -0.04 (all time) to 0.27 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

VWILX vs. PIOBX — Risk / Return Rank

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

VWILX

VWILX Risk / Return Rank: 10
VWILX Sharpe Ratio Rank: 9
VWILX Sortino Ratio Rank: 9
VWILX Omega Ratio Rank: 9
VWILX Calmar Ratio Rank: 10
VWILX Martin Ratio Rank: 10

PIOBX

PIOBX Risk / Return Rank: 25
PIOBX Sharpe Ratio Rank: 25
PIOBX Sortino Ratio Rank: 27
PIOBX Omega Ratio Rank: 25
PIOBX Calmar Ratio Rank: 25
PIOBX 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.

VWILX vs. PIOBX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard International Growth Fund Admiral Shares (VWILX) and Pioneer Bond Fund (PIOBX). 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.

	VWILX	PIOBX	Difference
Sharpe ratio: Return per unit of total volatility	0.76	1.43	-0.68
Sortino ratio: Return per unit of downside risk	1.16	2.16	-1.00
Omega ratio: Gain probability vs. loss probability	1.14	1.26	-0.12
Calmar ratio: Return relative to maximum drawdown	0.96	1.86	-0.89
Martin ratio: Return relative to average drawdown	3.10	5.83	-2.72
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VWILX vs. PIOBX - Sharpe Ratio Comparison

The current VWILX Sharpe Ratio is 0.76, which is lower than the PIOBX Sharpe Ratio of 1.43. The chart below compares the historical Sharpe Ratios of VWILX and PIOBX, 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

	VWILX	PIOBX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.76	1.43	-0.68
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.05	-0.01	-0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.46	0.41	+0.05
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.72	-0.38

Drawdowns

VWILX vs. PIOBX - Drawdown Comparison

The maximum VWILX drawdown since its inception was -59.49%, which is greater than PIOBX's maximum drawdown of -21.80%. Use the drawdown chart below to compare losses from any high point for VWILX and PIOBX.

Drawdown Indicators

	VWILX	PIOBX	Difference
Max Drawdown Largest peak-to-trough decline	-59.49%	-21.80%	-37.69%
Max Drawdown (1Y) Largest decline over 1 year	-14.06%	-3.06%	-11.00%
Max Drawdown (3Y) Largest decline over 3 years	-20.02%	-7.11%	-12.91%
Max Drawdown (5Y) Largest decline over 5 years	-53.56%	-19.64%	-33.92%
Max Drawdown (10Y) Largest decline over 10 years	-54.08%	-19.64%	-34.44%
Current Drawdown Current decline from peak	-14.66%	-2.20%	-12.46%
Average Drawdown Average peak-to-trough decline	-15.09%	-3.55%	-11.54%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.36%	0.97%	+3.39%

Volatility

VWILX vs. PIOBX - Volatility Comparison

Vanguard International Growth Fund Admiral Shares (VWILX) has a higher volatility of 4.73% compared to Pioneer Bond Fund (PIOBX) at 1.46%. This indicates that VWILX's price experiences larger fluctuations and is considered to be riskier than PIOBX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VWILX	PIOBX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.73%	1.46%	+3.27%
Volatility (6M) Calculated over the trailing 6-month period	14.45%	2.81%	+11.64%
Volatility (1Y) Calculated over the trailing 1-year period	17.96%	3.98%	+13.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.43%	6.01%	+17.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.70%	4.94%	+16.76%

VWILX vs. PIOBX - Expense Ratio Comparison

VWILX has a 0.32% expense ratio, which is lower than PIOBX's 0.79% expense ratio.

Dividends

VWILX vs. PIOBX - Dividend Comparison

VWILX's dividend yield for the trailing twelve months is around 6.49%, more than PIOBX's 3.73% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PIOBX Pioneer Bond Fund	3.73%	3.78%	3.31%	2.46%	1.62%	5.71%	4.62%	3.02%	3.13%	3.01%	2.97%	3.05%
VWILX Vanguard International Growth Fund Admiral Shares	6.49%	6.89%	9.81%	1.92%	7.03%	0.36%	2.38%	1.30%	5.52%	0.84%	1.42%	1.53%

Frequently Asked Questions

Can I hold both VWILX and PIOBX in my portfolio?

VWILX and PIOBX have a correlation of 0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VWILX or PIOBX?

VWILX has higher volatility (4.73%) compared to PIOBX (1.46%). In terms of maximum drawdown, VWILX dropped -59.49% vs PIOBX's -21.80%.

Which has better risk-adjusted returns?

PIOBX currently has the higher Sharpe Ratio (1.43 vs 0.76), 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.