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BRK-B · Berkshire Hathaway Inc · Short Interest

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$498.25 +0.30 (+0.06%)
Rebalance outlook locked
Market Cap
$707.57B
Shares
1.41B
Volume · Oct 1 1.5M Avg daily vol (3M) 4.32M

Shares sold short and not yet covered, reported twice monthly. Days to cover is the reported short position divided by average daily volume.

Pull short interest history through the short interest API or MCP →

BRK-B Latest Reported Short Interest

FINRA reported 12,529,378 BRK-B shares sold short as of the September 15, 2026 settlement date, an increase of 182,052 shares. Days to cover was 3.28 based on FINRA's reported average daily volume.

Official FINRA short-interest data · share counts are restated for subsequent splits of this listing

BRK-B Short Interest Forecast

Equibles' model estimates 13,059,883 shares sold short for the September 30, 2026 settlement, +4.2% versus the latest reported position, with a likely range of 11,194,599 to 15,253,724 shares. This model prediction uses FINRA data through September 30, 2026; FINRA's official release is expected October 9, 2026.

Model estimate

Expected Sep 30 short interest

as of Sep 30 Medium confidence 58% chance it rises
13,059,883 +4.2% vs reported
Likely range 11,194,599 to 15,253,724 The latest estimate appears in the chart below. Official release expected Oct 9. Methodology
Short Squeeze Score
42/100
Short interest 0.9% of shares — P38 Days to cover 3.3 — P48 Price vs VWAP -1.4% — P68 Short-volume trend -5.1% — P27 Short interest change +1.5% — P51 Worst FTD 0.00% of shares — P21

Positioning score 42.5 + catalyst boost 0 (total capped at 100). This is a screening index, not a probability of a squeeze.

Method and coverage limits

Factor percentiles compare eligible primary operating-company stocks reporting short interest at the latest settlement date (2026-09-15). The weighted mean uses short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, and fails-to-deliver 10%. Missing factors redistribute their weight; incomplete coverage is not evidence of low risk. Price, volume, and earnings boosts add 10 each, capped at 20.

Shares outstanding are not free float. Borrow fees, utilization, lendable supply, recalls, and dealer inventory are not measured. Short-sale volume does not measure the change in open shorts; fails to deliver are not a borrow-cost measurement; price vs VWAP does not establish short sellers' entry prices. Earnings can move prices in either direction.

The weights are judgment-based, not calibrated to future squeeze outcomes. The separate options assessment below does not change this universe ranking.

Options positioning & squeeze sensitivity

Nearest expiration after today within 30 calendar days; same-day expirations and later maturities are excluded.

Open interest is incomplete, stale, or dated inconsistently; positioning totals are unavailable.

Open interest has both a buyer and a seller; it does not reveal dealer hedge direction. Gross gamma sums both calls and puts without netting and uses a local 1% price-change approximation. It measures sensitivity, not predicted buying or a squeeze probability.

Assessment prepared 2026-10-01 16:33 UTC. Options model values may come from a cached snapshot; their original computation time is not supplied. Open interest has its own effective date.

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Dimensions
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    • Short Interest History

    Settlement Date Current Position Previous Position Change Days to Cover
    2026-10-15 Scheduled
    FINRA publishes Oct 26
    		 — — — —
    2026-09-30 Scheduled
    FINRA publishes Oct 9
    		 — — — —
    2026-09-15 12,529,378 12,347,326 +182,052 3.28
    2026-08-31 12,347,326 11,068,550 +1,278,776 3.00
    2026-08-14 11,068,550 12,455,328 -1,386,778 2.47
    2026-07-31 12,455,328 13,030,468 -575,140 2.95
    2026-07-15 13,030,468 12,987,527 +42,941 3.31
    2026-06-30 12,987,527 12,490,426 +497,101 2.19
    2026-06-15 12,490,426 12,218,857 +271,569 2.18
    2026-05-29 12,218,857 10,963,479 +1,255,378 2.53
    2026-05-15 10,963,479 10,644,080 +319,399 2.14
    2026-04-30 10,644,080 10,756,346 -112,266 2.15
    2026-04-15 10,756,346 11,923,610 -1,167,264 2.63
    2026-03-31 11,923,610 11,960,461 -36,851 2.57
    2026-03-13 11,960,461 11,722,714 +237,747 2.06
    2026-02-27 11,722,714 10,673,871 +1,048,843 2.92
    2026-02-13 10,673,871 11,433,397 -759,526 2.01
    2026-01-30 11,433,397 10,664,028 +769,369 2.20
    2026-01-15 10,664,028 11,095,604 -431,576 2.35
    2025-12-31 11,095,604 12,386,480 -1,290,876 2.55
    2025-12-15 12,386,480 13,020,089 -633,609 2.83
    2025-11-28 13,020,089 12,513,598 +506,491 2.32
    2025-11-14 12,513,598 11,974,812 +538,786 2.16
    2025-10-31 11,974,812 11,093,599 +881,213 2.63
    2025-10-15 11,093,599 12,532,579 -1,438,980 3.06

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1067983 CUSIP 084670702 13F (30d) 108 filings 45 filers Visit website Investor relations