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BBIO · BridgeBio Pharma, Inc. · Short Interest

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$66.75 +0.14 (+0.21%)
Russell 1000 member Rebalance outlook locked
Market Cap
$13.37B
Shares
195.49M

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 →

BBIO Latest Reported Short Interest

FINRA reported 21,845,899 BBIO shares sold short as of the August 31, 2026 settlement date, a decrease of 1,478,160 shares. Days to cover was 11.18 based on FINRA's reported average daily volume.

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

BBIO Short Interest Forecast

Equibles' model estimates 21,945,007 shares sold short for the September 15, 2026 settlement, +0.5% versus the latest reported position, with a likely range of 20,070,011 to 23,892,893 shares. This model prediction uses FINRA data through September 15, 2026; FINRA's official release is expected September 24, 2026.

Model estimate

Expected Sep 15 short interest

as of Sep 15 Low confidence 58% chance it falls
21,945,007 +0.5% vs reported
Likely range 20,070,011 to 23,892,893 The latest estimate appears in the chart below. Official release expected Sep 24. Methodology
Short Squeeze Score
57/100
Short interest 11.2% of shares — P91 Days to cover 11.2 — P90 Price vs VWAP -14.5% — P20 Short-volume trend -16.7% — P9 Short interest change -6.3% — P26 Worst FTD 0.01% of shares — P48

Positioning score 57.2 + 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 (2026-08-31). 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 2026-09-21 20:41 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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    • Short Interest History

    Settlement Date Current Position Previous Position Change Days to Cover
    2026-09-30 Scheduled
    FINRA publishes Oct 9
    		 — — — —
    2026-09-15 Scheduled
    FINRA publishes Sep 24
    		 — — — —
    2026-08-31 21,845,899 23,324,059 -1,478,160 11.18
    2026-08-14 23,324,059 23,342,623 -18,564 10.79
    2026-07-31 23,342,623 25,750,649 -2,408,026 11.50
    2026-07-15 25,750,649 24,102,938 +1,647,711 5.38
    2026-06-30 24,102,938 25,415,150 -1,312,212 4.51
    2026-06-15 25,415,150 24,391,359 +1,023,791 8.57
    2026-05-29 24,391,359 24,163,037 +228,322 9.60
    2026-05-15 24,163,037 24,026,982 +136,055 8.73
    2026-04-30 24,026,982 22,676,856 +1,350,126 7.59
    2026-04-15 22,676,856 23,366,752 -689,896 13.68
    2026-03-31 23,366,752 23,505,637 -138,885 14.73
    2026-03-13 23,505,637 21,964,843 +1,540,794 8.95
    2026-02-27 21,964,843 21,167,249 +797,594 6.98
    2026-02-13 21,167,249 19,980,855 +1,186,394 5.65
    2026-01-30 19,980,855 18,370,031 +1,610,824 7.14
    2026-01-15 18,370,031 17,211,114 +1,158,917 5.91
    2025-12-31 17,211,114 18,793,079 -1,581,965 10.19
    2025-12-15 18,793,079 19,381,854 -588,775 10.18
    2025-11-28 19,381,854 20,691,850 -1,309,996 8.49
    2025-11-14 20,691,850 19,566,757 +1,125,093 9.95
    2025-10-31 19,566,757 17,353,906 +2,212,851 6.54
    2025-10-15 17,353,906 17,486,250 -132,344 8.80
    2025-09-30 17,486,250 19,444,136 -1,957,886 7.20

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1743881 CUSIP 10806X102 13F (30d) 15 filings 12 filers Visit website Investor relations