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Berkshire Hathaway (BRK-B)

Berkshire Hathaway on one page: short interest, daily short volume, fails to deliver, 13F holders, financials, earnings dates and insider trades. Listed on NYSE, classified by the SEC as fire, marine & casualty insurance.

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12.4M

Short interest

settlement 2026-09-30

2.3

Days to cover

-1.0 days vs prior

46.4%

Short share of volume

2026-10-09

48

Fails to deliver

settlement 2026-09-11

Mon 2 Nov

Next earnings

estimated date

$250K

Insider flow, 90 days

3 buys, 0 sells

As of 2026-10-09.

Short interest

FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSON

As of 30 September 2026, short interest in BRK-B is 12,370,081 shares, up 22,755 shares over the last month. Over the last 48 readings it ranged from 10,644,080 shares (30 April 2026) to 15,764,701 shares (14 March 2025). At the reported average volume of 5.3M shares a day that is 2.3 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-3012,370,081-1.3%5,322,2052.32
2026-09-1512,529,378+1.5%3,817,5203.28
2026-08-3112,347,326+11.6%4,109,8443.00
2026-08-1411,068,550-11.1%4,486,2892.47
2026-07-3112,455,328-4.4%4,216,5202.95
2026-07-1513,030,468+0.3%3,941,1783.31
2026-06-3012,987,527+4.0%5,927,5942.19
2026-06-1512,490,426+2.2%5,719,8892.18
2026-05-2912,218,857+11.4%4,829,0532.53
2026-05-1510,963,479+3.0%5,119,2122.14
2026-04-3010,644,080-1.0%4,954,0762.15
2026-04-1510,756,346-9.8%4,084,6322.63
2026-03-3111,923,610-0.3%4,636,0792.57
2026-03-1311,960,461+2.0%5,798,8752.06
2026-02-2711,722,714+9.8%4,014,5702.92
2026-02-1310,673,871-6.6%5,310,5322.01
2026-01-3011,433,397+7.2%5,196,8112.20
2026-01-1510,664,028-3.9%4,541,2632.35
2025-12-3111,095,604-10.4%4,351,0782.55
2025-12-1512,386,480-4.9%4,378,2622.83
2025-11-2813,020,089+4.0%5,615,1942.32
2025-11-1412,513,598+4.5%5,786,8512.16
2025-10-3111,974,812+7.9%4,549,3672.63
2025-10-1511,093,599-11.5%3,625,8593.06

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of BRK-B volume is 46.4%, down 2.2 points over the last five sessions. Over the last 30 readings it ranged from 21.5% (4 September 2026) to 58.0% (30 September 2026). The latest reading is 8.7 points above the 30-session average of 37.7%, on 1.5M shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-09692K1.5M46.4%8,482
2026-10-08707K1.5M48.2%7,296
2026-10-07455K1.1M42.4%2,334
2026-10-06403K1.1M37.4%3,653
2026-10-05565K1.1M52.8%5,045
2026-10-02621K1.3M48.5%4,126
2026-10-01748K1.8M42.7%5,504
2026-09-301.1M1.8M58.0%4,383
2026-09-29441K1.1M39.9%4,577
2026-09-28490K1.2M41.6%2,592
2026-09-25419K929K45.1%4,034
2026-09-24314K951K33.0%7,367
2026-09-23737K1.8M41.7%1,289
2026-09-22583K1.5M39.4%7,687
2026-09-21921K1.8M50.7%1,008
2026-09-18696K1.7M40.0%1,307
2026-09-17628K2.3M26.8%2,179
2026-09-16621K1.7M36.4%2,642
2026-09-15379K1.1M34.2%3,054
2026-09-14431K1.4M29.8%1,633
2026-09-11371K1.3M27.9%1,592
2026-09-10343K1.0M32.7%2,296
2026-09-09387K1.2M32.0%9,823
2026-09-08426K1.4M30.0%1,978
2026-09-04269K1.2M21.5%2,672
2026-09-03442K1.6M27.6%1,092
2026-09-02418K1.4M30.9%177
2026-09-01431K1.3M33.0%3,913
2026-08-31292K1.0M28.2%1,970
2026-08-28427K1.4M31.3%1,655

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 11 September 2026, the fails-to-deliver balance in BRK-B is 48 shares, down 72 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (27 July 2026) to 32,363 shares (23 July 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-09-1148$507.00$24K
2026-09-10120$506.72$61K
2026-09-081,037$506.03$525K
2026-08-31700$505.00$354K
2026-08-283,485$503.70$1.8M
2026-08-256$504.32$3K
2026-08-203,364$499.62$1.7M
2026-08-1343$510.00$22K
2026-08-1210$516.38$5K
2026-08-101$521.80$522
2026-08-05981$517.22$507K
2026-08-041,185$513.14$608K
2026-08-0318$511.54$9K
2026-07-29551$512.37$282K
2026-07-2815,709$497.18$7.8M
2026-07-271$494.93$495
2026-07-24613$490.85$301K
2026-07-2332,363$489.39$15.8M
2026-07-21450$491.25$221K
2026-07-202,709$490.91$1.3M
2026-07-1646$488.35$22K
2026-07-14115$496.85$57K
2026-07-1313$493.71$6K
2026-07-096$494.79$3K
2026-07-088,543$504.00$4.3M
2026-07-071,897$506.58$961K
2026-07-06700$507.78$355K
2026-07-0111,995$500.39$6.0M
2026-06-301,234$496.00$612K
2026-06-2924,998$498.66$12.5M

Insider trades

SEC Form 4, newest first. JSON

Insiders at BRK-B reported 3 open-market buys worth $250K in the last 90 days and no open-market sells. Latest filing: O'Sullivan Michael J. (See Remarks) on 2026-08-12.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-08-12O'Sullivan Michael J.See RemarksBuy43$513.61$22K1K
2026-08-12O'Sullivan Michael J.See RemarksBuy400$512.52$205K1K
2026-08-12O'Sullivan Michael J.See RemarksBuy45$510.64$23K708
2026-05-06O'Sullivan Michael J.See RemarksBuy53$470.22$25K663
2026-05-06O'Sullivan Michael J.See RemarksBuy483$467.13$226K610
2021-06-22Abel GregoryVice ChairmanJ763$276.82$211K0
2021-06-22Abel GregoryVice ChairmanJ2K$276.82$634K2K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

13F holders

Tracked managers holding BRK-B at their latest 13F. JSON

9 of the 30 tracked managers held BRK-B at their latest 13F, $11.56B in total at quarter-end prices. Gates Foundation Trust is the largest at $7.35B (21.4% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 4 cut.

FundQuarterSharesValueOf portfolioChange in shares
Gates Foundation Trust2026-06-3014.7M$7.35B21.35%-2.4M
AQR Capital Management2026-06-302.4M$1.19B0.42%+738K
Two Sigma Investments2026-06-302.3M$1.14B0.82%+653K
D. E. Shaw & Co.2026-06-301.9M$961.0M0.46%+1.5M
Citadel Advisors2026-06-301.1M$543.3M0.06%-108K
Millennium Management2026-06-30588K$294.1M0.11%-65K
Soros Fund Management2026-06-30133K$66.7M0.82%0
Fisher Asset Management2026-06-3035K$17.6M0.01%-3K
Renaissance Technologies2026-06-302K$892K0.00%+69

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

Financials

SEC XBRL, as filed. JSON

In Q2 FY 2026 (quarter ended 2026-06-30) Berkshire Hathaway reported revenue of $70.11B, up 14.2% from the same quarter a year earlier, and net income of $25.67B. In FY 2025 it generated $45.97B of operating cash flow.

Equity
$747.91B
Total assets
$1263.07B
Shares outstanding
941,481

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 FY 20262026-06-30$70.11B$25.67B36.6%n/a
Q1 FY 20262026-03-31$63.14B$10.11B16.0%n/a
Q4 FY 2025derived2025-12-31$62.73B$19.20B30.6%n/a
Q3 FY 20252025-09-30$63.75B$30.80B48.3%n/a
Q2 FY 20252025-06-30$61.41B$12.37B20.1%n/a
Q1 FY 20252025-03-31$59.36B$4.60B7.8%n/a
Q4 FY 2024derived2024-12-31$62.86B$19.69B31.3%n/a
Q3 FY 20242024-09-30$62.05B$26.25B42.3%n/a

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$247.24B$66.97B$45.97B$20.93Bn/an/a
FY 20242024-12-31$249.71B$89.00B$30.59B$18.98B$2.92Bn/a
FY 20232023-12-31$254.91B$96.22B$49.20B$19.41B$9.17Bn/a
FY 20222022-12-31$207.77B-$22.76B$37.35B$15.46B$7.85Bn/a
FY 20212021-12-31$191.25B$89.94B$39.43B$13.28B$27.06Bn/a

Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2011-04-29 from the cover page.

What this page is

Berkshire Hathaway in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Berkshire Hathaway (BRK-B), SEC CIK 1067983, listed on NYSE, classified by the SEC as fire, marine & casualty insurance. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest
FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-09.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-11.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Financials
SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
Earnings dates
SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-11.JSON and CSV
Insider trades
SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-12.JSON and CSV
Company record
EDGAR filing index for CIK 1067983Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
10 requests a minute without a key, 30 with a free key from a free account.

How to read it

  • Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
  • Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
  • Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as fire, marine & casualty insurance

Datasets

Frequently Asked Questions

How much of BRK-B is sold short?
12,370,081 shares were held short at the 2026-09-30 settlement, 2.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is BRK-B's daily short volume?
On 2026-10-09, 691,653 of the 1,490,845 BRK-B shares reported to FINRA were sold short, 46.4% of the day's reported volume. Short volume is a flow for one day, not a position.
Does BRK-B have fails to deliver?
The SEC's latest file shows 48 BRK-B shares failed to deliver at settlement 2026-09-11. Fails are reported per settlement date and published twice a month with a lag.
Are BRK-B insiders buying or selling?
Insiders at BRK-B reported 3 open-market buys worth $250K in the last 90 days and no open-market sells. Latest filing: O'Sullivan Michael J. (See Remarks) on 2026-08-12.
What did BRK-B report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) Berkshire Hathaway reported revenue of $70.11B, up 14.2% from the same quarter a year earlier, and net income of $25.67B. In FY 2025 it generated $45.97B of operating cash flow.
Which tracked 13F managers own BRK-B?
9 of the 30 tracked 13F managers held BRK-B shares at their latest filing, $11.56B in all. The largest: Bill Gates's Gates Foundation Trust (14.7M shares, $7.35B), Cliff Asness's AQR Capital Management (2.4M shares, $1.19B), Two Sigma Investments (2.3M shares, $1.14B), D. E. Shaw & Co. (1.9M shares, $961.0M), Ken Griffin's Citadel Advisors (1.1M shares, $543.3M), Izzy Englander's Millennium Management (588K shares, $294.1M). The table above lists all 9.

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.