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Volume by Trader Size

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Opening Cross

Trading Hours

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VWAP Charts

Volume by Trader Size

Best Hour/Worst Hour

First Hour/Last Hour

Closing Cross

After Hours

VWAP

VWAP Charts

Dark Pool Trading

Volume

Volume by Trader Size

Historical Volume Breakdown

Historical Moves

Gap Up Moves

Gap Down Moves

Largest Up Moves

Largest Down Moves

Notable Trades

Large Block Trades

Contingent Trades

Best and Worst Hour of Trading for BRK.B

How has BRK.B stock performed at the opening price?

Over the last 30 days, BRK.B opened lower than the previous day's close 55% of the time. The average opening gap move was 0.0%, and the absolute average of the gap moves, which measures the magnitude of the move in either direction, was 0.24%.

What has been the best hour of the day for BRK.B stock performance?

BRK.B stock price had positive returns 48% of the time between 9:30 AM ET and 10:00 AM ET, for an average return of +0.1%. The weakest hour of trading for BRK.B was between 3:00 PM and 4:00 PM ET for an average return of -0.1%.

What time of day is BRK.B the most volatile?

In the last 30 days, BRK.B stock was the most volatile between 9:30 AM and 10:00 AM ET, averaging ±0.36% returns in absolute terms.
Today's Performance by Trading Hour
9:30-10 10-11 11-12 12-1 1-2 2-3 3-4 Opening Gap Open to High Open to Low Open to Close
Today's Return -0.23% -0.11% +0.03% -0.07% -0.03% +0.41% +0.03% -0.17% +0.27% -0.51% +0.03%
Today's Volume 256,149 476,582 419,070 342,600 303,680 337,639 546,324 - - - -
Relative Volume Today's volume for this hour, expressed as a ratio of the average volume for the hour 0.7 1.0 1.1 1.1 1.2 1.3 0.8 - - - -
Today's Return as Std Dev Today's return expressed as a # of standard deviations away from 0. The standard deviation is calculated from the hour's performance over the last 30 days. -0.4 -0.3 +0.1 -0.3 -0.2 +2.1 +0.1 -0.6 +0.6 -0.9 0.0
Best/Worst Trading Hour Summary - Last 30 Days
9:30-10 10-11 11-12 12-1 1-2 2-3 3-4 Opening Gap Open to High Open to Low Open to Close
Simple Average Returns - Last 30 Days
Avg Return +0.06% -0.04% -0.04% 0.00% +0.01% +0.05% -0.06% -0.02% +0.63% -0.62% 0.00%
Avg Volume 348,360 467,406 393,358 319,196 244,884 258,900 677,527 - - - -
% Days Positive 48% 45% 58% 55% 48% 69% 48% 45% 59%
% Days Negative 52% 55% 42% 45% 52% 31% 52% 55% 41%
Absolute Average Returns - Last 30 Days
Abs Avg Return ±0.36% ±0.33% ±0.21% ±0.16% ±0.12% ±0.16% ±0.21% +0.24% +0.60%
Abs Max Return 1.66% 1.09% 1.48% 0.63% 0.30% 0.41% 0.73% +0.56% +1.93% +2.34% +1.67%
Abs Min Return 0.00% 0.00% 0.00% 0.00% 0.00% +0.01% 0.00% +0.01% +0.05% +0.08% +0.03%
Median, Maximum, and Minimum Returns - Last 30 Days
Median Return -0.01% -0.01% +0.02% +0.01% 0.00% +0.04% 0.00% -0.03% +0.52% -0.45% +0.16%
Max Pos Return +1.66% +0.75% +0.38% +0.63% +0.27% +0.41% +0.34% +0.56% +1.93% +1.08%
Max Neg Return -0.74% -1.09% -1.48% -0.41% -0.30% -0.31% -0.73% -0.40% -2.34% -1.67%

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Best/Worst Trading Hour Details - Last 30 Days
Date Volume 9:30-10 10-11 11-12 12-1 1-2 2-3 3-4 Opening Gap Open to High Open to Low Open to Close
9-Jan-26 2,690,277 -0.23% -0.11% +0.03% -0.07% -0.03% +0.41% +0.03% -0.17% +0.27% -0.51% +0.03%
8-Jan-26 3,227,257 +1.15% +0.19% +0.21% +0.08% -0.24% +0.03% -0.33% -0.32% +1.93% -0.08% +1.06%
7-Jan-26 3,333,649 -0.29% -0.53% -0.03% +0.01% 0.00% +0.15% +0.33% -0.21% +0.23% -0.99% -0.38%
6-Jan-26 2,728,895 +0.10% +0.21% -0.02% +0.20% +0.12% +0.03% -0.17% -0.35% +0.78% -0.15% +0.45%
5-Jan-26 3,165,894 +1.66% -0.16% +0.02% -0.32% -0.03% -0.13% -0.27% -0.27% +1.60% -0.20% +0.61%
2-Jan-26 4,675,175 -0.70% +0.75% -1.48% 0.00% +0.15% +0.11% +0.26% -0.33% +0.18% -1.61% -0.83%
31-Dec-25 1,831,874 +0.34% -0.29% +0.20% -0.08% +0.14% -0.15% -0.43% -0.03% +0.47% -0.21% -0.18%
30-Dec-25 2,228,741 +0.41% -0.01% +0.06% +0.25% -0.07% +0.05% -0.17% -0.01% +0.82% -0.13% +0.54%
29-Dec-25 2,146,384 -0.12% +0.41% -0.26% -0.21% +0.27% +0.10% +0.02% +0.29% +0.35% -0.51% +0.26%
26-Dec-25 1,793,577 +0.10% -0.33% -0.14% -0.12% -0.08% +0.04% +0.16% -0.21% +0.25% -0.69% -0.40%
24-Dec-25 1,074,797 -0.02% +0.05% +0.05% +0.15% -0.10% +0.30% -0.15% +0.27%
23-Dec-25 2,265,781 +0.01% -0.27% -0.21% +0.10% +0.09% +0.32% -0.15% +0.17% +0.30% -0.53% -0.06%
22-Dec-25 2,615,513 -0.03% +0.37% +0.29% +0.13% -0.16% +0.03% +0.13% +0.30% +0.87% -0.09% +0.80%
19-Dec-25 3,407,966 -0.33% 0.00% +0.14% -0.41% -0.05% +0.01% -0.73% -0.09% +0.17% -1.67% -1.67%
18-Dec-25 2,326,405 -0.10% +0.40% 0.00% -0.19% +0.10% -0.15% +0.15% -0.40% +0.64% -0.24% +0.23%
17-Dec-25 2,527,628 0.00% +0.53% +0.16% +0.07% +0.05% +0.23% -0.07% +0.03% +1.04% -0.10% +0.85%
16-Dec-25 2,730,244 -0.65% -0.38% -0.34% +0.01% -0.03% +0.14% -0.27% +0.29% +0.05% -1.66% -1.58%
15-Dec-25 2,839,663 +0.86% -0.34% -0.30% +0.05% +0.20% +0.34% +0.34% +0.29% +1.13% -0.13% +1.08%
12-Dec-25 2,886,103 -0.37% -0.13% +0.24% -0.11% +0.25% +0.29% +0.25% +0.21% +0.62% -0.48% +0.53%
11-Dec-25 3,084,465 +0.40% +0.08% +0.38% +0.28% -0.30% -0.16% +0.06% +0.56% +1.00% -0.28% +0.54%
10-Dec-25 3,355,199 +0.61% +0.40% -0.39% -0.05% -0.20% -0.16% -0.26% -0.29% +1.20% -0.22% +0.09%
9-Dec-25 3,301,420 -0.13% -1.09% +0.26% -0.17% -0.11% -0.12% 0.00% +0.17% +0.23% -1.45% -1.33%
8-Dec-25 5,369,223 -0.74% -0.92% -0.19% +0.63% -0.03% +0.38% -0.07% -0.39% +0.12% -2.34% -1.02%
5-Dec-25 2,172,140 +0.07% +0.06% +0.10% +0.15% +0.23% -0.18% -0.05% -0.30% +0.80% -0.24% +0.52%
4-Dec-25 2,479,392 +0.31% -0.70% +0.02% 0.00% +0.02% -0.26% +0.30% +0.34% +0.23% -0.91% -0.41%
3-Dec-25 2,358,659 -0.13% -0.06% -0.21% +0.21% -0.07% +0.06% -0.52% +0.24% +0.34% -0.84% -0.84%
2-Dec-25 2,220,940 -0.63% +0.55% -0.13% -0.16% +0.12% +0.09% +0.07% -0.40% +0.32% -0.67% +0.03%
1-Dec-25 2,439,221 +0.07% -0.28% -0.22% +0.09% +0.04% -0.31% -0.33% -0.15% +0.28% -0.95% -0.88%
28-Nov-25 1,591,229 +0.33% +0.18% +0.26% -0.38% +0.15% +0.95% -0.09% +0.35%
26-Nov-25 2,455,312 -0.01% +0.26% +0.28% +0.01% -0.22% +0.01% +0.02% +0.23% +0.58% -0.41% +0.29%
25-Nov-25 2,757,910 -0.16% -0.20% +0.03% -0.25% +0.03% +0.13% +0.07% +0.19% +0.70% -0.38% -0.04%
Market Data Delayed 15 Minutes