WAMFX vs. PFSLX

Last updated Jun 24, 2026

WAMFX (Boston Trust Walden Midcap Fund) and PFSLX (Paradigm Select Fund) are both Mid Cap Blend Equities funds. Over the past 10 years, WAMFX returned 10.54%/yr vs 17.81%/yr for PFSLX. Their correlation of 0.84 suggests significant overlap in exposure. WAMFX charges 0.99%/yr vs 1.16%/yr for PFSLX.

Performance

WAMFX vs. PFSLX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Boston Trust Walden Midcap Fund (WAMFX) and Paradigm Select Fund (PFSLX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WAMFX achieves a 2.40% return, which is significantly lower than PFSLX's 46.57% return. Over the past 10 years, WAMFX has underperformed PFSLX with an annualized return of 10.54%, while PFSLX has yielded a comparatively higher 17.81% annualized return.

WAMFX

• 1D: 0.00%
• 1M: 0.83%
• YTD: 2.40%
• 6M: 1.19%
• 1Y: 7.06%
• 3Y*: 9.45%
• 5Y*: 6.29%
• 10Y*: 10.54%

PFSLX

• 1D: 0.76%
• 1M: 9.94%
• YTD: 46.57%
• 6M: 43.69%
• 1Y: 81.70%
• 3Y*: 29.34%
• 5Y*: 15.11%
• 10Y*: 17.81%

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

WAMFX vs. PFSLX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WAMFX Boston Trust Walden Midcap Fund	2.40%	4.82%	10.39%	13.90%	-10.87%	24.85%	9.56%	36.98%	-3.59%	16.21%
PFSLX Paradigm Select Fund	46.57%	13.27%	16.73%	26.94%	-26.44%	31.16%	26.05%	38.32%	-9.93%	16.13%

Correlation

The correlation between WAMFX and PFSLX is 0.61, 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	0.61
Correlation (3Y) Calculated over the trailing 3-year period	0.70
Correlation (5Y) Calculated over the trailing 5-year period	0.78
Correlation (10Y) Calculated over the trailing 10-year period	0.81
Correlation (All Time) Calculated using the full available price history since Aug 1, 2011	0.84

Over the past year, the correlation between WAMFX and PFSLX has dropped to 0.61 - well below their long-term average of 0.84, suggesting their price drivers have been diverging.

Return for Risk

WAMFX vs. PFSLX — Risk / Return Rank

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

WAMFX

WAMFX Risk / Return Rank: 10
WAMFX Sharpe Ratio Rank: 9
WAMFX Sortino Ratio Rank: 10
WAMFX Omega Ratio Rank: 9
WAMFX Calmar Ratio Rank: 11
WAMFX Martin Ratio Rank: 11

PFSLX

PFSLX Risk / Return Rank: 92
PFSLX Sharpe Ratio Rank: 96
PFSLX Sortino Ratio Rank: 87
PFSLX Omega Ratio Rank: 82
PFSLX Calmar Ratio Rank: 98
PFSLX Martin Ratio Rank: 98

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.

WAMFX vs. PFSLX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Boston Trust Walden Midcap Fund (WAMFX) and Paradigm Select Fund (PFSLX). 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.

	WAMFX	PFSLX	Difference
Sharpe ratio: Return per unit of total volatility	0.71	3.20	-2.49
Sortino ratio: Return per unit of downside risk	1.13	3.90	-2.77
Omega ratio: Gain probability vs. loss probability	1.13	1.50	-0.37
Calmar ratio: Return relative to maximum drawdown	1.01	7.65	-6.64
Martin ratio: Return relative to average drawdown	2.92	29.34	-26.43

WAMFX vs. PFSLX - Sharpe Ratio Comparison

The current WAMFX Sharpe Ratio is 0.71, which is lower than the PFSLX Sharpe Ratio of 3.20. The chart below compares the historical Sharpe Ratios of WAMFX and PFSLX, 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

WAMFX vs. PFSLX - Drawdown Comparison

The maximum WAMFX drawdown since its inception was -36.81%, smaller than the maximum PFSLX drawdown of -91.83%. Use the drawdown chart below to compare losses from any high point for WAMFX and PFSLX.

Drawdown Indicators

	WAMFX	PFSLX	Difference
Max Drawdown Largest peak-to-trough decline	-36.81%	-91.83%	+55.02%
Max Drawdown (1Y) Largest decline over 1 year	-8.38%	-10.91%	+2.53%
Max Drawdown (3Y) Largest decline over 3 years	-17.51%	-91.83%	+74.32%
Max Drawdown (5Y) Largest decline over 5 years	-20.82%	-91.83%	+71.01%
Max Drawdown (10Y) Largest decline over 10 years	-36.81%	-91.83%	+55.02%
Current Drawdown Current decline from peak	-2.17%	-82.26%	+80.09%
Average Drawdown Average peak-to-trough decline	-3.93%	-13.89%	+9.96%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.91%	2.84%	+0.07%

Volatility

WAMFX vs. PFSLX - Volatility Comparison

The current volatility for Boston Trust Walden Midcap Fund (WAMFX) is 3.26%, while Paradigm Select Fund (PFSLX) has a volatility of 10.66%. This indicates that WAMFX experiences smaller price fluctuations and is considered to be less risky than PFSLX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WAMFX	PFSLX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.26%	10.66%	-7.40%
Volatility (6M) Calculated over the trailing 6-month period	8.36%	20.93%	-12.57%
Volatility (1Y) Calculated over the trailing 1-year period	12.04%	26.15%	-14.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.81%	146.11%	-130.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.49%	104.50%	-87.01%

WAMFX vs. PFSLX - Expense Ratio Comparison

WAMFX has a 0.99% expense ratio, which is lower than PFSLX's 1.16% expense ratio.

Dividends

WAMFX vs. PFSLX - Dividend Comparison

WAMFX's dividend yield for the trailing twelve months is around 7.06%, more than PFSLX's 0.10% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PFSLX Paradigm Select Fund	0.10%	0.14%	0.02%	0.31%	0.01%	0.17%	0.11%	0.58%	2.93%	3.89%	0.74%	9.40%
WAMFX Boston Trust Walden Midcap Fund	7.06%	7.23%	3.49%	4.84%	5.55%	4.82%	3.87%	12.83%	7.08%	0.45%	5.06%	5.54%

Frequently Asked Questions

Can I hold both WAMFX and PFSLX in my portfolio?

WAMFX and PFSLX 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, WAMFX or PFSLX?

PFSLX has higher volatility (10.66%) compared to WAMFX (3.26%). In terms of maximum drawdown, WAMFX dropped -36.81% vs PFSLX's -91.83%.

Which has better risk-adjusted returns?

PFSLX currently has the higher Sharpe Ratio (3.20 vs 0.71), 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.