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RNAC · Cartesian Therapeutics, Inc. · Short Interest

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$6.20 -0.21 (-3.28%)
Russell 2000 member Rebalance outlook locked
Market Cap
$193.94M
Shares
30.26M
Volume · Oct 23 85.81K Avg daily vol (3M) 131.68K

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 →

RNAC Latest Reported Short Interest

FINRA reported 1,855,626 RNAC shares sold short as of the September 30, 2026 settlement date, an increase of 52,344 shares. Days to cover was 12.64 based on FINRA's reported average daily volume.

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

RNAC Short Interest Forecast

Equibles' model estimates 1,921,002 shares sold short for the October 15, 2026 settlement, +3.5% versus the latest reported position, with a likely range of 1,753,799 to 2,111,535 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 63% chance it rises
1,921,002 +3.5% vs reported
Likely range 1,753,799 to 2,111,535 The latest estimate appears in the chart below. Official release expected Oct 26. Methodology
Short Squeeze Score
69/100
Short interest 6.1% of shares — P77 Days to cover 12.6 — P94 Price vs VWAP -22.9% — P20 Short-volume trend +10.3% — P84 Short interest change +2.9% — P58 Worst FTD 0.02% of shares — P60

Positioning score 69.4 + 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 2026-10-23 23:40 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
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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 1,855,626 1,803,282 +52,344 12.64
    2026-09-15 1,803,282 1,811,559 -8,277 17.00
    2026-08-31 1,811,559 1,868,036 -56,477 13.38
    2026-08-14 1,868,036 1,843,723 +24,313 17.85
    2026-07-31 1,843,723 1,925,634 -81,911 14.89
    2026-07-15 1,925,634 1,886,695 +38,939 12.30
    2026-06-30 1,886,695 1,927,010 -40,315 4.91
    2026-06-15 1,927,010 2,291,824 -364,814 3.24
    2026-05-29 2,291,824 2,216,090 +75,734 12.37
    2026-05-15 2,216,090 2,169,081 +47,009 11.87
    2026-04-30 2,169,081 2,214,144 -45,063 12.79
    2026-04-15 2,214,144 2,170,494 +43,650 14.01
    2026-03-31 2,170,494 2,119,136 +51,358 14.66
    2026-03-13 2,119,136 2,148,586 -29,450 4.77
    2026-02-27 2,148,586 2,215,393 -66,807 15.63
    2026-02-13 2,215,393 2,161,341 +54,052 22.20
    2026-01-30 2,161,341 2,128,743 +32,598 24.97
    2026-01-15 2,128,743 2,337,271 -208,528 13.62
    2025-12-31 2,337,271 2,343,662 -6,391 10.34
    2025-12-15 2,343,662 2,080,754 +262,908 8.46
    2025-11-28 2,080,754 2,029,938 +50,816 19.01
    2025-11-14 2,029,938 2,128,562 -98,624 18.54
    2025-10-31 2,128,562 2,124,297 +4,265 7.21

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1453687 CUSIP 816212302 13F (30d) 12 filings 12 filers Visit website Investor relations