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THCGX vs. MRFOX
Performance
Return for Risk
Drawdowns
Volatility
Dividends

Performance

THCGX vs. MRFOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Thornburg Small/Mid Cap Growth Fund (THCGX) and Marshfield Concentrated Opportunity Fund (MRFOX). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, THCGX achieves a 13.69% return, which is significantly higher than MRFOX's 3.97% return. Over the past 10 years, THCGX has underperformed MRFOX with an annualized return of 9.22%, while MRFOX has yielded a comparatively higher 16.07% annualized return.


THCGX

1D
1.96%
1M
3.63%
6M
9.99%
YTD
13.69%
1Y
22.53%
3Y*
12.96%
5Y*
0.73%
10Y*
9.22%

MRFOX

1D
0.08%
1M
1.97%
6M
1.89%
YTD
3.97%
1Y
11.45%
3Y*
13.95%
5Y*
11.50%
10Y*
16.07%
*Multi-year figures are annualized to reflect compound growth (CAGR)

THCGX vs. MRFOX - Yearly Performance Comparison


2026 (YTD)202520242023202220212020201920182017
THCGX
Thornburg Small/Mid Cap Growth Fund
13.69%4.31%19.67%19.56%-34.19%-4.97%41.70%28.95%-2.56%23.91%
MRFOX
Marshfield Concentrated Opportunity Fund
3.97%10.05%17.10%17.68%5.06%17.71%15.19%36.26%1.89%25.92%

Correlation

The correlation between THCGX and MRFOX 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

0.49

Correlation (5Y)
Calculated over the trailing 5-year period

0.60

Correlation (10Y)
Calculated over the trailing 10-year period

0.64

Correlation (All Time)
Calculated using the full available price history since Jan 4, 2016

0.65

Over the past year, the correlation between THCGX and MRFOX has dropped to 0.27 - well below their long-term average of 0.65, suggesting their price drivers have been diverging.

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Return for Risk

THCGX vs. MRFOX — Risk / Return Rank

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

THCGX
THCGX Risk / Return Rank: 2323
Overall Rank
THCGX Sharpe Ratio Rank: 2323
Sharpe Ratio Rank
THCGX Sortino Ratio Rank: 2323
Sortino Ratio Rank
THCGX Omega Ratio Rank: 2222
Omega Ratio Rank
THCGX Calmar Ratio Rank: 2323
Calmar Ratio Rank
THCGX Martin Ratio Rank: 2424
Martin Ratio Rank

MRFOX
MRFOX Risk / Return Rank: 2626
Overall Rank
MRFOX Sharpe Ratio Rank: 2525
Sharpe Ratio Rank
MRFOX Sortino Ratio Rank: 2828
Sortino Ratio Rank
MRFOX Omega Ratio Rank: 2424
Omega Ratio Rank
MRFOX Calmar Ratio Rank: 2828
Calmar Ratio Rank
MRFOX Martin Ratio Rank: 2525
Martin Ratio Rank
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.

THCGX vs. MRFOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Thornburg Small/Mid Cap Growth Fund (THCGX) and Marshfield Concentrated Opportunity Fund (MRFOX). 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.


THCGXMRFOXDifference
Sharpe ratioReturn per unit of total volatility

-0.06

Sortino ratioReturn per unit of downside risk

-0.14

Omega ratioGain probability vs. loss probability

1.18

1.19

-0.01

Calmar ratioReturn relative to maximum drawdown

1.33

1.54

-0.21

Martin ratioReturn relative to average drawdown

4.31

4.54

-0.23

THCGX vs. MRFOX - Sharpe Ratio Comparison

The current THCGX Sharpe Ratio is 1.02, which is comparable to the MRFOX Sharpe Ratio of 1.08. The chart below compares the historical Sharpe Ratios of THCGX and MRFOX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.


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Drawdowns

THCGX vs. MRFOX - Drawdown Comparison

The maximum THCGX drawdown since its inception was -63.67%, which is greater than MRFOX's maximum drawdown of -29.10%. Use the drawdown chart below to compare losses from any high point for THCGX and MRFOX.


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Drawdown Indicators


THCGXMRFOXDifference

Max Drawdown

Largest peak-to-trough decline

-63.67%

-29.10%

-34.57%

Max Drawdown (1Y)

Largest decline over 1 year

-15.53%

-7.03%

-8.50%

Max Drawdown (3Y)

Largest decline over 3 years

-30.25%

-7.91%

-22.34%

Max Drawdown (5Y)

Largest decline over 5 years

-63.67%

-12.98%

-50.69%

Max Drawdown (10Y)

Largest decline over 10 years

-63.67%

-29.10%

-34.57%

Current Drawdown

Current decline from peak

-32.68%

-1.36%

-31.32%

Average Drawdown

Average peak-to-trough decline

-21.27%

-2.35%

-18.92%

Ulcer Index

Depth and duration of drawdowns from previous peaks

4.79%

2.38%

+2.41%

Volatility

THCGX vs. MRFOX - Volatility Comparison

Thornburg Small/Mid Cap Growth Fund (THCGX) has a higher volatility of 6.10% compared to Marshfield Concentrated Opportunity Fund (MRFOX) at 3.54%. This indicates that THCGX's price experiences larger fluctuations and is considered to be riskier than MRFOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


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Volatility by Period


THCGXMRFOXDifference

Volatility (1M)

Calculated over the trailing 1-month period

6.10%

3.54%

+2.56%

Volatility (6M)

Calculated over the trailing 6-month period

14.82%

7.43%

+7.39%

Volatility (1Y)

Calculated over the trailing 1-year period

20.25%

10.02%

+10.23%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

37.02%

12.11%

+24.91%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

30.12%

14.15%

+15.97%

THCGX vs. MRFOX - Expense Ratio Comparison

THCGX has a 1.31% expense ratio, which is higher than MRFOX's 1.05% expense ratio.


Dividends

THCGX vs. MRFOX - Dividend Comparison

THCGX has not paid dividends to shareholders, while MRFOX's dividend yield for the trailing twelve months is around 1.56%.


PositionTTM2025202420232022202120202019201820172016
MRFOX
Marshfield Concentrated Opportunity Fund
1.56%1.62%4.59%0.46%0.35%6.78%2.68%1.39%1.94%2.06%0.60%
THCGX
Thornburg Small/Mid Cap Growth Fund
0.00%0.00%0.00%0.00%0.00%54.25%6.23%9.32%0.00%0.00%0.00%

Frequently Asked Questions


THCGX and MRFOX 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.

THCGX has higher volatility (6.10%) compared to MRFOX (3.54%). In terms of maximum drawdown, THCGX dropped -63.67% vs MRFOX's -29.10%.

MRFOX currently has the higher Sharpe Ratio (1.08 vs 1.02), 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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