Skip to main content
Equibles
WRB logo

WRB · Berkley W R Corp · Short Interest

Track WRB — free

Use WRB with AI

Add company filings, earnings and prices to ChatGPT or Claude, then ask questions in your own chat.

Choose your app for step-by-step connection instructions. Sign in with Equibles when asked; no code or API key is needed.

Claude ChatGPT

After connecting, ask your AI to use Equibles to research WRB.

Other apps & server URL
https://mcp.equibles.com/mcp
Gemini CLI setup
or ask here

Free, nothing to set up — ALVIS runs on the same tools and cites every figure.

See what you can ask in ChatGPT or Claude

All connection guides →
$73.80 +0.25 (+0.34%)
S&P 500 member Russell 1000 member Rebalance outlook locked
Market Cap
$27.30B
Shares
371.23M
Volume · Oct 14 2.02M Avg daily vol (3M) 2.49M

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 →

WRB Latest Reported Short Interest

FINRA reported 13,102,697 WRB shares sold short as of the September 30, 2026 settlement date, a decrease of 2,353,716 shares. Days to cover was 2.83 based on FINRA's reported average daily volume.

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

WRB Short Interest Forecast

Equibles' model estimates 13,417,859 shares sold short for the October 15, 2026 settlement, +2.4% versus the latest reported position, with a likely range of 11,725,034 to 15,305,512 shares. This model prediction uses FINRA data through October 14, 2026; FINRA's official release is expected October 26, 2026.

Model estimate

Expected Oct 15 short interest

as of Oct 14 Low confidence 47% chance it rises
13,417,859 +2.4% vs reported
Likely range 11,725,034 to 15,305,512 The latest estimate appears in the chart below. Official release expected Oct 26. Methodology
Short Squeeze Score
71/100
Short interest 3.5% of shares — P61 Days to cover 2.8 — P47 Price vs VWAP +4.9% — P89 Short-volume trend -17.8% — P8 Short interest change -15.2% — P19 Worst FTD 0.02% of shares — P66 Price spike +10 Earnings soon +10

Positioning score 50.8 + catalyst boost 20 (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 (2026-09-30). 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 2026-10-14 23:32 UTC. Options model values may come from a cached snapshot; their original computation time is not supplied. Open interest has its own effective date.

1M 3M 6M 1Y 5Y All
Dimensions
  • Add to chart

    • Short Interest History

    Settlement Date Current Position Previous Position Change Days to Cover
    2026-10-30 Scheduled
    FINRA publishes Nov 10
    		 — — — —
    2026-10-15 Scheduled
    FINRA publishes Oct 26
    		 — — — —
    2026-09-30 13,102,697 15,456,413 -2,353,716 2.83
    2026-09-15 15,456,413 15,177,596 +278,817 5.68
    2026-08-31 15,177,596 14,856,832 +320,764 9.91
    2026-08-14 14,856,832 15,608,018 -751,186 8.72
    2026-07-31 15,608,018 17,721,972 -2,113,954 7.27
    2026-07-15 17,721,972 17,838,099 -116,127 9.64
    2026-06-30 17,838,099 18,772,707 -934,608 7.87
    2026-06-15 18,772,707 18,495,039 +277,668 8.84
    2026-05-29 18,495,039 18,590,945 -95,906 6.98
    2026-05-15 18,590,945 19,023,468 -432,523 11.11
    2026-04-30 19,023,468 18,445,428 +578,040 7.72
    2026-04-15 18,445,428 20,193,825 -1,748,397 11.15
    2026-03-31 20,193,825 19,133,915 +1,059,910 7.40
    2026-03-13 19,133,915 20,193,402 -1,059,487 10.85
    2026-02-27 20,193,402 20,103,374 +90,028 9.02
    2026-02-13 20,103,374 19,132,103 +971,271 9.67
    2026-01-30 19,132,103 18,401,650 +730,453 6.46
    2026-01-15 18,401,650 17,506,059 +895,591 8.05
    2025-12-31 17,506,059 24,860,492 -7,354,433 6.53
    2025-12-15 24,860,492 25,869,453 -1,008,961 4.95
    2025-11-28 25,869,453 24,168,675 +1,700,778 14.21
    2025-11-14 24,168,675 21,048,792 +3,119,883 9.01
    2025-10-31 21,048,792 9,775,731 +11,273,061 5.02
    2025-10-15 9,775,731 8,883,955 +891,776 5.03

    Full FINRA short interest reporting calendar

    Showing 1–24 of 24 settlements
    Key facts CIK 11544 CUSIP 084423102 13F (30d) 72 filings 64 filers Visit website Investor relations