WPGTX vs. BPSIX

Last updated Jun 3, 2026

WPGTX (WPG Partners Small/Micro Cap Value Fund) and BPSIX (Boston Partners Small Cap Value Fund Class I) are both Small Cap Value Equities funds from Boston Partners. Over the past 10 years, WPGTX returned 9.82%/yr vs 9.65%/yr for BPSIX. Their correlation of 0.90 suggests significant overlap in exposure. WPGTX charges 1.10%/yr vs 0.99%/yr for BPSIX.

Performance

WPGTX vs. BPSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WPG Partners Small/Micro Cap Value Fund (WPGTX) and Boston Partners Small Cap Value Fund Class I (BPSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WPGTX achieves a 16.68% return, which is significantly higher than BPSIX's 10.19% return. Both investments have delivered pretty close results over the past 10 years, with WPGTX having a 9.82% annualized return and BPSIX not far behind at 9.65%.

WPGTX

• 1D: 0.18%
• 1M: 2.14%
• YTD: 16.68%
• 6M: 17.57%
• 1Y: 32.84%
• 3Y*: 14.92%
• 5Y*: 10.30%
• 10Y*: 9.82%

BPSIX

• 1D: 0.77%
• 1M: 0.53%
• YTD: 10.19%
• 6M: 12.50%
• 1Y: 22.30%
• 3Y*: 16.10%
• 5Y*: 6.61%
• 10Y*: 9.65%

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

WPGTX vs. BPSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WPGTX WPG Partners Small/Micro Cap Value Fund	16.68%	7.08%	10.53%	14.45%	2.10%	40.04%	-1.31%	23.35%	-21.88%	5.58%
BPSIX Boston Partners Small Cap Value Fund Class I	10.19%	7.45%	13.95%	16.98%	-11.48%	25.67%	1.60%	28.06%	-16.42%	9.72%

Correlation

The correlation between WPGTX and BPSIX is 0.89, 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	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Jul 1, 1998	0.90

The correlation between WPGTX and BPSIX has been stable across timeframes, ranging from 0.89 to 0.95 - a consistent structural relationship.

Return for Risk

WPGTX vs. BPSIX — Risk / Return Rank

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

WPGTX

WPGTX Risk / Return Rank: 52
WPGTX Sharpe Ratio Rank: 49
WPGTX Sortino Ratio Rank: 49
WPGTX Omega Ratio Rank: 46
WPGTX Calmar Ratio Rank: 60
WPGTX Martin Ratio Rank: 53

BPSIX

BPSIX Risk / Return Rank: 25
BPSIX Sharpe Ratio Rank: 23
BPSIX Sortino Ratio Rank: 25
BPSIX Omega Ratio Rank: 22
BPSIX Calmar Ratio Rank: 30
BPSIX Martin Ratio Rank: 25

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.

WPGTX vs. BPSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WPG Partners Small/Micro Cap Value Fund (WPGTX) and Boston Partners Small Cap Value Fund Class I (BPSIX). 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.

	WPGTX	BPSIX	Difference
Sharpe ratio Return per unit of total volatility	2.07	1.38	+0.69
Sortino ratio Return per unit of downside risk	2.95	2.13	+0.83
Omega ratio Gain probability vs. loss probability	1.37	1.25	+0.13
Calmar ratio Return relative to maximum drawdown	2.99	2.07	+0.92
Martin ratio Return relative to average drawdown	10.93	6.25	+4.68
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WPGTX vs. BPSIX - Sharpe Ratio Comparison

The current WPGTX Sharpe Ratio is 2.07, which is higher than the BPSIX Sharpe Ratio of 1.38. The chart below compares the historical Sharpe Ratios of WPGTX and BPSIX, 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

	WPGTX	BPSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.07	1.38	+0.69
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.52	0.34	+0.19
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.44	0.44	0.00
Sharpe Ratio (All Time) Calculated using the full available price history	0.47	0.48	-0.02

Drawdowns

WPGTX vs. BPSIX - Drawdown Comparison

The maximum WPGTX drawdown since its inception was -60.60%, roughly equal to the maximum BPSIX drawdown of -62.51%. Use the drawdown chart below to compare losses from any high point for WPGTX and BPSIX.

Drawdown Indicators

	WPGTX	BPSIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.60%	-62.51%	+1.91%
Max Drawdown (1Y) Largest decline over 1 year	-10.64%	-10.39%	-0.25%
Max Drawdown (3Y) Largest decline over 3 years	-25.90%	-21.62%	-4.28%
Max Drawdown (5Y) Largest decline over 5 years	-25.90%	-22.01%	-3.89%
Max Drawdown (10Y) Largest decline over 10 years	-50.03%	-47.79%	-2.24%
Current Drawdown Current decline from peak	-0.32%	-0.83%	+0.51%
Average Drawdown Average peak-to-trough decline	-13.01%	-9.09%	-3.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.91%	3.44%	-0.53%

Volatility

WPGTX vs. BPSIX - Volatility Comparison

WPG Partners Small/Micro Cap Value Fund (WPGTX) has a higher volatility of 4.26% compared to Boston Partners Small Cap Value Fund Class I (BPSIX) at 3.86%. This indicates that WPGTX's price experiences larger fluctuations and is considered to be riskier than BPSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WPGTX	BPSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.26%	3.86%	+0.40%
Volatility (6M) Calculated over the trailing 6-month period	10.97%	10.74%	+0.23%
Volatility (1Y) Calculated over the trailing 1-year period	15.85%	15.87%	-0.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.75%	19.72%	+0.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.45%	22.12%	+0.33%

WPGTX vs. BPSIX - Expense Ratio Comparison

WPGTX has a 1.10% expense ratio, which is higher than BPSIX's 0.99% expense ratio.

Dividends

WPGTX vs. BPSIX - Dividend Comparison

WPGTX's dividend yield for the trailing twelve months is around 8.70%, more than BPSIX's 6.86% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BPSIX Boston Partners Small Cap Value Fund Class I	6.86%	7.56%	14.43%	12.77%	7.64%	7.03%	0.54%	2.42%	6.95%	4.50%	2.22%	5.29%
WPGTX WPG Partners Small/Micro Cap Value Fund	8.70%	10.15%	6.38%	7.58%	17.82%	1.47%	0.64%	0.44%	8.44%	6.83%	0.42%	3.03%

Frequently Asked Questions

Can I hold both WPGTX and BPSIX in my portfolio?

WPGTX and BPSIX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WPGTX or BPSIX?

WPGTX has higher volatility (4.26%) compared to BPSIX (3.86%). In terms of maximum drawdown, WPGTX dropped -60.60% vs BPSIX's -62.51%.

Which has better risk-adjusted returns?

WPGTX currently has the higher Sharpe Ratio (2.07 vs 1.38), 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.