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QDEL · QuidelOrtho Corp · Short Interest

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$13.71 -0.38 (-2.66%)
S&P 600 member Russell 2000 member Rebalance outlook locked
Market Cap
$965.54M
Shares
68.58M
Volume · Oct 22 562.24K Avg daily vol (3M) 1.7M

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 →

QDEL Latest Reported Short Interest

FINRA reported 14,953,442 QDEL shares sold short as of the September 30, 2026 settlement date, an increase of 762,917 shares. Days to cover was 10.98 based on FINRA's reported average daily volume.

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

QDEL Short Interest Forecast

Equibles' model estimates 14,189,354 shares sold short for the October 15, 2026 settlement, -5.1% versus the latest reported position, with a likely range of 12,414,757 to 15,777,377 shares. This model prediction uses FINRA data through October 15, 2026; FINRA's official release is expected October 26, 2026.

Model estimate

Expected Oct 15 short interest

as of Oct 15 High confidence 69% chance it falls
14,189,354 -5.1% vs reported
Likely range 12,414,757 to 15,777,377 The latest estimate appears in the chart below. Official release expected Oct 26. Methodology
Short Squeeze Score
80/100
Short interest 21.8% of shares — P98 Days to cover 11.0 — P93 Price vs VWAP +5.6% — P87 Short-volume trend +4.4% — P69 Short interest change +5.4% — P64 Worst FTD 0.00% of shares — P20

Positioning score 79.9 + 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 (2026-09-30). 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 2026-10-22 16:55 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
    2026-10-30 Scheduled
    FINRA publishes Nov 10
    		 — — — —
    2026-10-15 Scheduled
    FINRA publishes Oct 26
    		 — — — —
    2026-09-30 14,953,442 14,190,525 +762,917 10.98
    2026-09-15 14,190,525 14,128,210 +62,315 10.77
    2026-08-31 14,128,210 14,962,267 -834,057 10.51
    2026-08-14 14,962,267 13,005,131 +1,957,136 7.55
    2026-07-31 13,005,131 11,802,749 +1,202,382 12.72
    2026-07-15 11,802,749 11,505,504 +297,245 9.76
    2026-06-30 11,505,504 12,353,554 -848,050 5.35
    2026-06-15 12,353,554 12,029,248 +324,306 7.11
    2026-05-29 12,029,248 11,794,699 +234,549 6.82
    2026-05-15 11,794,699 12,811,515 -1,016,816 4.52
    2026-04-30 12,811,515 11,654,263 +1,157,252 3.58
    2026-04-15 11,654,263 12,791,328 -1,137,065 6.36
    2026-03-31 12,791,328 10,997,657 +1,793,671 5.94
    2026-03-13 10,997,657 10,302,587 +695,070 9.00
    2026-02-27 10,302,587 10,182,215 +120,372 8.75
    2026-02-13 10,182,215 10,371,307 -189,092 7.28
    2026-01-30 10,371,307 10,520,919 -149,612 8.95
    2026-01-15 10,520,919 11,249,168 -728,249 11.36
    2025-12-31 11,249,168 11,330,182 -81,014 16.53
    2025-12-15 11,330,182 11,475,641 -145,459 12.10
    2025-11-28 11,475,641 11,055,721 +419,920 9.01
    2025-11-14 11,055,721 9,024,719 +2,031,002 4.60
    2025-10-31 9,024,719 8,395,606 +629,113 8.25

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1906324 CUSIP 219798105 13F (30d) 26 filings 26 filers Visit website Investor relations