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MIR · Mirion Technologies, Inc. · Short Interest

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$15.37 +0.13 (+0.85%) At close · Oct 21
S&P 600 member Russell 2000 member Rebalance outlook locked
Market Cap
$3.80B
Shares
249.04M
Volume · Oct 21 2.92M Avg daily vol (3M) 4.04M

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 →

MIR Latest Reported Short Interest

FINRA reported 38,384,209 MIR shares sold short as of the September 30, 2026 settlement date, a decrease of 1,319,420 shares. Days to cover was 9.68 based on FINRA's reported average daily volume.

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

MIR Short Interest Forecast

Equibles' model estimates 40,135,525 shares sold short for the October 15, 2026 settlement, +4.6% versus the latest reported position, with a likely range of 35,833,906 to 44,584,007 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 Medium confidence 59% chance it rises
40,135,525 +4.6% vs reported
Likely range 35,833,906 to 44,584,007 The latest estimate appears in the chart below. Official release expected Oct 26. Methodology
Short Squeeze Score
83/100
Short interest 15.4% of shares — P95 Days to cover 9.7 — P91 Price vs VWAP -1.6% — P64 Short-volume trend -7.5% — P25 Short interest change -3.3% — P38 Worst FTD 0.52% of shares — P94 Earnings soon +10

Positioning score 73.2 + catalyst boost 10 (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 02:42 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
    2026-10-30 Scheduled
    FINRA publishes Nov 10
    		 — — — —
    2026-10-15 Scheduled
    FINRA publishes Oct 26
    		 — — — —
    2026-09-30 38,384,209 39,703,629 -1,319,420 9.68
    2026-09-15 39,703,629 35,906,916 +3,796,713 10.70
    2026-08-31 35,906,916 32,513,654 +3,393,262 10.97
    2026-08-14 32,513,654 34,203,650 -1,689,996 8.54
    2026-07-31 34,203,650 34,652,952 -449,302 7.45
    2026-07-15 34,652,952 35,142,853 -489,901 9.78
    2026-06-30 35,142,853 28,984,088 +6,158,765 6.37
    2026-06-15 28,984,088 31,961,185 -2,977,097 9.28
    2026-05-29 31,961,185 30,187,748 +1,773,437 6.69
    2026-05-15 30,187,748 26,472,596 +3,715,152 9.00
    2026-04-30 26,472,596 22,214,772 +4,257,824 6.07
    2026-04-15 22,214,772 23,596,990 -1,382,218 7.76
    2026-03-31 23,596,990 21,020,735 +2,576,255 5.87
    2026-03-13 21,020,735 20,430,102 +590,633 6.12
    2026-02-27 20,430,102 19,647,434 +782,668 5.64
    2026-02-13 19,647,434 21,054,700 -1,407,266 4.34
    2026-01-30 21,054,700 18,857,131 +2,197,569 10.51
    2026-01-15 18,857,131 22,238,139 -3,381,008 7.15
    2025-12-31 22,238,139 21,104,501 +1,133,638 11.78
    2025-12-15 21,104,501 25,684,851 -4,580,350 7.22
    2025-11-28 25,684,851 22,117,086 +3,567,765 7.14
    2025-11-14 22,117,086 22,607,386 -490,300 5.54
    2025-10-31 22,607,386 25,117,809 -2,510,423 4.86

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1809987 CUSIP 60471A101 13F (30d) 41 filings 41 filers Visit website Investor relations