TMFX vs. BRK-B

Last updated Aug 2, 2026

TMFX (Motley Fool Next Index ETF) is Mid Cap Growth Equities fund tracking the Motley Fool Next Index, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 3 years, TMFX returned 12.05%/yr vs 13.24%/yr for BRK-B. Their 0.42 correlation means their historical movements had little consistent relationship.

Performance

TMFX vs. BRK-B - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Motley Fool Next Index ETF (TMFX) and Berkshire Hathaway Inc. (BRK-B). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TMFX achieves a 6.98% return, which is significantly higher than BRK-B's 1.77% return.

TMFX

• 1D: -0.74%
• 1M: -1.12%
• 6M: 7.46%
• YTD: 6.98%
• 1Y: 12.14%
• 3Y*: 12.05%
• 5Y*: —
• 10Y*: —
• ALL TIME*: 3.17%

BRK-B

• 1D: 0.36%
• 1M: 0.74%
• 6M: 6.45%
• YTD: 1.77%
• 1Y: 8.18%
• 3Y*: 13.24%
• 5Y*: 12.95%
• 10Y*: 13.57%
• ALL TIME*: 10.71%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
BRK-B Berkshire Hathaway Inc.	$2.04B	$2.04B	$2.42B
TMFX Motley Fool Next Index ETF	$130.19K	$125.62K	$115.15K

TMFX vs. BRK-B - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
TMFX Motley Fool Next Index ETF	6.98%	10.41%	16.04%	17.95%	-28.16%	-0.65%
BRK-B Berkshire Hathaway Inc.	1.77%	10.89%	27.09%	15.46%	3.31%	-0.33%

Correlation

The correlation between TMFX and BRK-B is 0.07, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.07
Correlation (3Y) Balances recent behavior with more history.	0.30
Correlation (All Time) Calculated using the full available price history since Dec 31, 2021	0.42

Over the past year, the correlation between TMFX and BRK-B has dropped to 0.07 - well below their long-term average of 0.42, suggesting their price drivers have been diverging.

Return for Risk

TMFX vs. BRK-B — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

TMFX

TMFX Risk / Return Rank: 26
TMFX Sharpe Ratio Rank: 26
TMFX Sortino Ratio Rank: 26
TMFX Omega Ratio Rank: 24
TMFX Calmar Ratio Rank: 25
TMFX Martin Ratio Rank: 29

BRK-B

BRK-B Risk / Return Rank: 61
BRK-B Sharpe Ratio Rank: 65
BRK-B Sortino Ratio Rank: 56
BRK-B Omega Ratio Rank: 55
BRK-B Calmar Ratio Rank: 65
BRK-B Martin Ratio Rank: 64

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

TMFX vs. BRK-B - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Motley Fool Next Index ETF (TMFX) and Berkshire Hathaway Inc. (BRK-B). 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.

	TMFX	BRK-B	Difference
Sharpe ratio: Return per unit of total volatility	0.61	0.57	+0.04
Sortino ratio: Return per unit of downside risk	0.99	0.89	+0.10
Omega ratio: Gain probability vs. loss probability	1.11	1.11	0.00
Calmar ratio: Return relative to maximum drawdown	0.76	0.90	-0.13
Martin ratio: Return relative to average drawdown	2.41	1.88	+0.53

TMFX vs. BRK-B - Sharpe Ratio Comparison

The current TMFX Sharpe Ratio is 0.61, which is comparable to the BRK-B Sharpe Ratio of 0.57. The chart below compares the historical Sharpe Ratios of TMFX and BRK-B, 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

TMFX vs. BRK-B - Drawdown Comparison

The maximum TMFX drawdown since its inception was -34.72%, smaller than the maximum BRK-B drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for TMFX and BRK-B.

Drawdown Indicators

	TMFX	BRK-B	Difference
Max Drawdown Largest peak-to-trough decline	-34.72%	-53.86%	+19.14%
Max Drawdown (1Y) Largest decline over 1 year	-13.95%	-9.42%	-4.53%
Max Drawdown (3Y) Largest decline over 3 years	-24.05%	-14.95%	-9.10%
Max Drawdown (5Y) Largest decline over 5 years	—	-26.58%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-29.57%	—
Current Drawdown Current decline from peak	-1.51%	-5.24%	+3.73%
Average Drawdown Average peak-to-trough decline	-14.26%	-11.06%	-3.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.42%	4.49%	-0.07%

Volatility

TMFX vs. BRK-B - Volatility Comparison

The current volatility for Motley Fool Next Index ETF (TMFX) is 4.17%, while Berkshire Hathaway Inc. (BRK-B) has a volatility of 4.59%. This indicates that TMFX experiences smaller price fluctuations and is considered to be less risky than BRK-B based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TMFX	BRK-B	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.17%	4.59%	-0.42%
Volatility (6M) Calculated over the trailing 6-month period	13.05%	11.13%	+1.92%
Volatility (1Y) Calculated over the trailing 1-year period	17.39%	14.79%	+2.60%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.18%	17.12%	+6.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.18%	19.42%	+3.76%

Dividends

TMFX vs. BRK-B - Dividend Comparison

TMFX's dividend yield for the trailing twelve months is around 0.05%, while BRK-B has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022
BRK-B Berkshire Hathaway Inc.	0.00%	0.00%	0.00%	0.00%	0.00%
TMFX Motley Fool Next Index ETF	0.05%	0.05%	0.06%	0.16%	0.22%

Frequently Asked Questions

Can I hold both TMFX and BRK-B in my portfolio?

TMFX and BRK-B have a correlation of 0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TMFX or BRK-B?

BRK-B has higher volatility (4.59%) compared to TMFX (4.17%). In terms of maximum drawdown, TMFX dropped -34.72% vs BRK-B's -53.86%.

Which has better risk-adjusted returns?

TMFX currently has the higher Sharpe Ratio (0.61 vs 0.57), 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.