BRK-B vs. T

Last updated Jul 21, 2026

BRK-B (Berkshire Hathaway Inc.) and T (AT&T Inc.) are both stocks. BRK-B operates in Insurance - Diversified (Financial Services), while T operates in Telecom Services (Communication Services). Over the past 10 years, BRK-B returned 13.01%/yr vs 2.10%/yr for T. At a 0.31 correlation, their price movements are largely independent.

Performance

BRK-B vs. T - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Berkshire Hathaway Inc. (BRK-B) and AT&T Inc. (T). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BRK-B achieves a -2.27% return, which is significantly higher than T's -7.04% return. Over the past 10 years, BRK-B has outperformed T with an annualized return of 13.01%, while T has yielded a comparatively lower 2.10% annualized return.

BRK-B

• 1D: 0.07%
• 1M: 0.37%
• 6M: -0.41%
• YTD: -2.27%
• 1Y: 3.68%
• 3Y*: 12.42%
• 5Y*: 11.91%
• 10Y*: 13.01%
• ALL TIME*: 10.58%

T

• 1D: 0.64%
• 1M: 2.62%
• 6M: -2.84%
• YTD: -7.04%
• 1Y: -13.37%
• 3Y*: 20.93%
• 5Y*: 7.13%
• 10Y*: 2.10%
• ALL TIME*: 9.35%

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

BRK-B vs. T - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BRK-B Berkshire Hathaway Inc.	-2.27%	10.89%	27.09%	15.46%	3.31%	28.95%	2.37%	10.93%	3.01%	21.62%
T AT&T Inc.	-7.04%	13.97%	44.08%	-2.74%	5.76%	-8.09%	-21.37%	45.55%	-22.25%	-4.01%

Correlation

The correlation between BRK-B and T is 0.22, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.22
Correlation (3Y) Calculated over the trailing 3-year period	0.27
Correlation (5Y) Calculated over the trailing 5-year period	0.37
Correlation (10Y) Calculated over the trailing 10-year period	0.42
Correlation (All Time) Calculated using the full available price history since May 9, 1996	0.31

The correlation between BRK-B and T shifts across timeframes, from 0.22 (1 year) to 0.42 (10 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap BRK-B : $1.06T T : $152.52B
EPS BRK-B : $33.62 T : $3.05
PE Ratio BRK-B : 14.61 T : 7.19
PEG Ratio BRK-B : 0.57 T : 0.30
PS Ratio BRK-B : 2.82 T : 1.25
Total Revenue (TTM) BRK-B : $375.39B T : $125.65B
Gross Profit (TTM) BRK-B : $94.36B T : $105.41B
EBITDA (TTM) BRK-B : $71.92B T : $54.70B

Return for Risk

BRK-B vs. T — Risk / Return Rank

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

BRK-B

BRK-B Risk / Return Rank: 51
BRK-B Sharpe Ratio Rank: 55
BRK-B Sortino Ratio Rank: 46
BRK-B Omega Ratio Rank: 45
BRK-B Calmar Ratio Rank: 56
BRK-B Martin Ratio Rank: 55

T

T Risk / Return Rank: 22
T Sharpe Ratio Rank: 19
T Sortino Ratio Rank: 19
T Omega Ratio Rank: 20
T Calmar Ratio Rank: 29
T Martin Ratio Rank: 23

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.

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

This table presents a comparison of risk-adjusted performance metrics for Berkshire Hathaway Inc. (BRK-B) and AT&T Inc. (T). 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.

	BRK-B	T	Difference
Sharpe ratio: Return per unit of total volatility	0.25	-0.57	+0.82
Sortino ratio: Return per unit of downside risk	0.45	-0.67	+1.12
Omega ratio: Gain probability vs. loss probability	1.05	0.92	+0.13
Calmar ratio: Return relative to maximum drawdown	0.39	-0.46	+0.86
Martin ratio: Return relative to average drawdown	0.82	-1.03	+1.86

BRK-B vs. T - Sharpe Ratio Comparison

The current BRK-B Sharpe Ratio is 0.25, which is higher than the T Sharpe Ratio of -0.57. The chart below compares the historical Sharpe Ratios of BRK-B and T, 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

BRK-B vs. T - Drawdown Comparison

The maximum BRK-B drawdown since its inception was -53.86%, smaller than the maximum T drawdown of -64.15%. Use the drawdown chart below to compare losses from any high point for BRK-B and T.

Drawdown Indicators

	BRK-B	T	Difference
Max Drawdown Largest peak-to-trough decline	-53.86%	-64.15%	+10.29%
Max Drawdown (1Y) Largest decline over 1 year	-9.42%	-28.89%	+19.47%
Max Drawdown (3Y) Largest decline over 3 years	-14.95%	-28.89%	+13.94%
Max Drawdown (5Y) Largest decline over 5 years	-26.58%	-32.01%	+5.43%
Max Drawdown (10Y) Largest decline over 10 years	-29.57%	-42.35%	+12.78%
Current Drawdown Current decline from peak	-8.99%	-21.57%	+12.58%
Average Drawdown Average peak-to-trough decline	-11.06%	-15.74%	+4.68%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.50%	12.94%	-8.44%

Volatility

BRK-B vs. T - Volatility Comparison

The current volatility for Berkshire Hathaway Inc. (BRK-B) is 4.42%, while AT&T Inc. (T) has a volatility of 9.59%. This indicates that BRK-B experiences smaller price fluctuations and is considered to be less risky than T based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BRK-B	T	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.42%	9.59%	-5.17%
Volatility (6M) Calculated over the trailing 6-month period	11.07%	19.91%	-8.84%
Volatility (1Y) Calculated over the trailing 1-year period	14.57%	23.72%	-9.15%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.09%	24.38%	-7.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.40%	23.92%	-4.52%

Dividends

BRK-B vs. T - Dividend Comparison

BRK-B has not paid dividends to shareholders, while T's dividend yield for the trailing twelve months is around 6.58%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRK-B Berkshire Hathaway Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
T AT&T Inc.	6.58%	4.47%	4.87%	6.62%	6.66%	8.46%	7.23%	5.22%	7.01%	5.04%	4.51%	5.46%

Financials

Frequently Asked Questions

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

BRK-B and T have a correlation of 0.22, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BRK-B or T?

T has higher volatility (9.59%) compared to BRK-B (4.42%). In terms of maximum drawdown, BRK-B dropped -53.86% vs T's -64.15%.

Which has better risk-adjusted returns?

BRK-B currently has the higher Sharpe Ratio (0.25 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.