BRK-B vs. BAI

Last updated Jun 6, 2026

BRK-B (Berkshire Hathaway Inc.) is a stock, while BAI (iShares A.I. Innovation and Tech Active ETF) is Technology Equities fund actively managed by iShares. Over the past year, BRK-B returned -0.12% vs 73.98% for BAI. At a correlation of -0.06, they often move in opposite directions.

Performance

BRK-B vs. BAI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Berkshire Hathaway Inc. (BRK-B) and iShares A.I. Innovation and Tech Active ETF (BAI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BRK-B achieves a -2.89% return, which is significantly lower than BAI's 36.79% return.

BRK-B

• 1D: 1.98%
• 1M: 3.90%
• YTD: -2.89%
• 6M: -3.21%
• 1Y: -0.12%
• 3Y*: 13.55%
• 5Y*: 10.78%
• 10Y*: 13.19%

BAI

• 1D: -9.78%
• 1M: -1.28%
• YTD: 36.79%
• 6M: 32.16%
• 1Y: 73.98%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

BRK-B vs. BAI - Yearly Performance Comparison

	2026 (YTD)	2025	2024
BRK-B Berkshire Hathaway Inc.	-2.89%	10.89%	-1.77%
BAI iShares A.I. Innovation and Tech Active ETF	36.79%	25.22%	8.06%

Correlation

The correlation between BRK-B and BAI is -0.19, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.19
Correlation (All Time) Calculated using the full available price history since Oct 23, 2024	-0.06

The correlation between BRK-B and BAI shifts across timeframes, from -0.19 (1 year) to -0.06 (all time), reflecting how their relationship changes across market environments.

Return for Risk

BRK-B vs. BAI — 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: 38
BRK-B Sharpe Ratio Rank: 41
BRK-B Sortino Ratio Rank: 33
BRK-B Omega Ratio Rank: 32
BRK-B Calmar Ratio Rank: 41
BRK-B Martin Ratio Rank: 41

BAI

BAI Risk / Return Rank: 68
BAI Sharpe Ratio Rank: 69
BAI Sortino Ratio Rank: 56
BAI Omega Ratio Rank: 60
BAI Calmar Ratio Rank: 85
BAI Martin Ratio Rank: 69

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. BAI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Berkshire Hathaway Inc. (BRK-B) and iShares A.I. Innovation and Tech Active ETF (BAI). 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.

	BRK-B	BAI	Difference
Sharpe ratio: Return per unit of total volatility	-0.01	2.18	-2.19
Sortino ratio: Return per unit of downside risk	0.09	2.57	-2.48
Omega ratio: Gain probability vs. loss probability	1.01	1.36	-0.34
Calmar ratio: Return relative to maximum drawdown	-0.01	4.58	-4.60
Martin ratio: Return relative to average drawdown	-0.03	12.40	-12.43
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BRK-B vs. BAI - Sharpe Ratio Comparison

The current BRK-B Sharpe Ratio is -0.01, which is lower than the BAI Sharpe Ratio of 2.18. The chart below compares the historical Sharpe Ratios of BRK-B and BAI, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	BRK-B	BAI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.01	2.18	-2.19
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.63	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.68	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	1.30	-0.82

Drawdowns

BRK-B vs. BAI - Drawdown Comparison

The maximum BRK-B drawdown since its inception was -53.86%, which is greater than BAI's maximum drawdown of -34.09%. Use the drawdown chart below to compare losses from any high point for BRK-B and BAI.

Drawdown Indicators

	BRK-B	BAI	Difference
Max Drawdown Largest peak-to-trough decline	-53.86%	-34.09%	-19.77%
Max Drawdown (1Y) Largest decline over 1 year	-9.42%	-16.22%	+6.80%
Max Drawdown (3Y) Largest decline over 3 years	-14.95%	—	—
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	-9.57%	-12.27%	+2.70%
Average Drawdown Average peak-to-trough decline	-11.07%	-6.94%	-4.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.47%	5.99%	-1.52%

Volatility

BRK-B vs. BAI - Volatility Comparison

The current volatility for Berkshire Hathaway Inc. (BRK-B) is 4.08%, while iShares A.I. Innovation and Tech Active ETF (BAI) has a volatility of 15.64%. This indicates that BRK-B experiences smaller price fluctuations and is considered to be less risky than BAI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BRK-B	BAI	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.08%	15.64%	-11.56%
Volatility (6M) Calculated over the trailing 6-month period	10.87%	28.35%	-17.48%
Volatility (1Y) Calculated over the trailing 1-year period	14.39%	34.05%	-19.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.13%	35.91%	-18.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.43%	35.91%	-16.48%

Dividends

BRK-B vs. BAI - Dividend Comparison

BRK-B has not paid dividends to shareholders, while BAI's dividend yield for the trailing twelve months is around 1.31%.

Position	TTM	2025
BAI iShares A.I. Innovation and Tech Active ETF	1.31%	1.80%
BRK-B Berkshire Hathaway Inc.	0.00%	0.00%

Frequently Asked Questions

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

BRK-B and BAI have a correlation of -0.19, 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 BAI?

BAI has higher volatility (15.64%) compared to BRK-B (4.08%). In terms of maximum drawdown, BRK-B dropped -53.86% vs BAI's -34.09%.

Which has better risk-adjusted returns?

BAI currently has the higher Sharpe Ratio (2.18 vs -0.01), 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.