WAMFX vs. TARKX

Last updated Apr 2, 2026

Compare and contrast key facts about Boston Trust Walden Midcap Fund (WAMFX) and Tarkio Fund (TARKX).

WAMFX is managed by Boston Trust Walden. It was launched on Aug 1, 2011. TARKX is managed by Clark Fork Trust. It was launched on Jun 28, 2011.

Performance

WAMFX vs. TARKX - Performance Comparison

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

WAMFX vs. TARKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WAMFX Boston Trust Walden Midcap Fund	-2.54%	4.82%	10.39%	13.90%	-10.87%	24.85%	9.56%	36.98%	-3.59%	16.21%
TARKX Tarkio Fund	3.13%	30.18%	21.72%	26.33%	-30.39%	24.41%	27.00%	29.54%	-23.30%	29.04%

Returns By Period

In the year-to-date period, WAMFX achieves a -2.54% return, which is significantly lower than TARKX's 3.13% return. Over the past 10 years, WAMFX has underperformed TARKX with an annualized return of 9.88%, while TARKX has yielded a comparatively higher 13.42% annualized return.

WAMFX

• 1D: 1.62%
• 1M: -6.37%
• YTD: -2.54%
• 6M: -2.52%
• 1Y: 3.33%
• 3Y*: 7.19%
• 5Y*: 5.73%
• 10Y*: 9.88%

TARKX

• 1D: 5.32%
• 1M: -11.53%
• YTD: 3.13%
• 6M: 11.85%
• 1Y: 48.87%
• 3Y*: 21.76%
• 5Y*: 7.94%
• 10Y*: 13.42%

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

WAMFX vs. TARKX - Expense Ratio Comparison

WAMFX has a 0.99% expense ratio, which is lower than TARKX's 1.00% expense ratio.

TARKX

Tarkio Fund

WAMFX

Boston Trust Walden Midcap Fund

Return for Risk

WAMFX vs. TARKX — Risk / Return Rank

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

WAMFX

WAMFX Risk / Return Rank: 8
WAMFX Sharpe Ratio Rank: 7
WAMFX Sortino Ratio Rank: 7
WAMFX Omega Ratio Rank: 6
WAMFX Calmar Ratio Rank: 9
WAMFX Martin Ratio Rank: 11

TARKX

TARKX Risk / Return Rank: 82
TARKX Sharpe Ratio Rank: 80
TARKX Sortino Ratio Rank: 80
TARKX Omega Ratio Rank: 73
TARKX Calmar Ratio Rank: 91
TARKX Martin Ratio Rank: 85

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. TARKX - Risk-Adjusted Trends Comparison

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

	WAMFX	TARKX	Difference
Sharpe ratio Return per unit of total volatility	0.21	1.55	-1.34
Sortino ratio Return per unit of downside risk	0.43	2.13	-1.70
Omega ratio Gain probability vs. loss probability	1.05	1.29	-0.24
Calmar ratio Return relative to maximum drawdown	0.36	2.82	-2.46
Martin ratio Return relative to average drawdown	1.43	9.30	-7.87
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WAMFX vs. TARKX - Sharpe Ratio Comparison

The current WAMFX Sharpe Ratio is 0.21, which is lower than the TARKX Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of WAMFX and TARKX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	WAMFX	TARKX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.21	1.55	-1.34
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.36	0.01	+0.35
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.57	0.03	+0.54
Sharpe Ratio (All Time) Calculated using the full available price history	0.60	0.04	+0.56

Correlation

The correlation between WAMFX and TARKX is 0.84, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

WAMFX vs. TARKX - Dividend Comparison

WAMFX's dividend yield for the trailing twelve months is around 7.42%, more than TARKX's 5.34% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
WAMFX Boston Trust Walden Midcap Fund	7.42%	7.23%	3.49%	4.84%	5.55%	4.82%	3.87%	12.83%	7.08%	0.45%	5.06%	5.54%
TARKX Tarkio Fund	5.34%	5.50%	1.51%	2.98%	10.62%	1.40%	0.50%	5.21%	3.34%	1.70%	0.47%	0.36%

Drawdowns

WAMFX vs. TARKX - Drawdown Comparison

The maximum WAMFX drawdown since its inception was -36.81%, smaller than the maximum TARKX drawdown of -95.09%. Use the drawdown chart below to compare losses from any high point for WAMFX and TARKX.

Drawdown Indicators

	WAMFX	TARKX	Difference
Max Drawdown Largest peak-to-trough decline	-36.81%	-95.09%	+58.28%
Max Drawdown (1Y) Largest decline over 1 year	-11.66%	-17.33%	+5.67%
Max Drawdown (5Y) Largest decline over 5 years	-20.82%	-95.09%	+74.27%
Max Drawdown (10Y) Largest decline over 10 years	-36.81%	-95.09%	+58.28%
Current Drawdown Current decline from peak	-6.89%	-91.33%	+84.44%
Average Drawdown Average peak-to-trough decline	-3.94%	-17.02%	+13.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.97%	5.25%	-2.28%

Volatility

WAMFX vs. TARKX - Volatility Comparison

The current volatility for Boston Trust Walden Midcap Fund (WAMFX) is 3.83%, while Tarkio Fund (TARKX) has a volatility of 11.90%. This indicates that WAMFX experiences smaller price fluctuations and is considered to be less risky than TARKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WAMFX	TARKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.83%	11.90%	-8.07%
Volatility (6M) Calculated over the trailing 6-month period	8.50%	21.91%	-13.41%
Volatility (1Y) Calculated over the trailing 1-year period	16.28%	32.25%	-15.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.81%	600.49%	-584.68%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.48%	424.90%	-407.42%