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ACHR · Archer Aviation Inc. · Short Interest

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$4.89 -0.14 (-2.78%) At close · Oct 2
Russell 2000 member Rebalance outlook locked
Market Cap
$4.18B
Shares
770.02M
Volume · Oct 2 24.43M Avg daily vol (3M) 31.49M

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 →

ACHR Latest Reported Short Interest

FINRA reported 94,442,010 ACHR shares sold short as of the September 15, 2026 settlement date, a decrease of 3,294,664 shares. Days to cover was 4.47 based on FINRA's reported average daily volume.

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

ACHR Short Interest Forecast

Equibles' model estimates 100,821,167 shares sold short for the September 30, 2026 settlement, +6.8% versus the latest reported position, with a likely range of 90,557,570 to 113,480,080 shares. This model prediction uses FINRA data through September 30, 2026; FINRA's official release is expected October 9, 2026.

Model estimate

Expected Sep 30 short interest

as of Sep 30 High confidence 70% chance it rises
100,821,167 +6.8% vs reported
Likely range 90,557,570 to 113,480,080 The latest estimate appears in the chart below. Official release expected Oct 9. Methodology
Short Squeeze Score
63/100
Short interest 12.3% of shares — P92 Days to cover 4.5 — P59 Price vs VWAP -12.1% — P27 Short-volume trend +4.5% — P64 Short interest change -3.4% — P32 Worst FTD 0.03% of shares — P69

Positioning score 63.3 + 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 (2026-09-15). 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 2026-10-04 14:44 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
    2026-10-15 Scheduled
    FINRA publishes Oct 26
    		 — — — —
    2026-09-30 Scheduled
    FINRA publishes Oct 9
    		 — — — —
    2026-09-15 94,442,010 97,736,674 -3,294,664 4.47
    2026-08-31 97,736,674 91,996,566 +5,740,108 3.47
    2026-08-14 91,996,566 89,919,543 +2,077,023 1.77
    2026-07-31 89,919,543 95,100,718 -5,181,175 2.42
    2026-07-15 95,100,718 108,476,072 -13,375,354 3.45
    2026-06-30 108,476,072 123,330,060 -14,853,988 2.56
    2026-06-15 123,330,060 92,082,595 +31,247,465 2.52
    2026-05-29 92,082,595 107,087,793 -15,005,198 1.52
    2026-05-15 107,087,793 97,410,053 +9,677,740 2.21
    2026-04-30 97,410,053 91,868,691 +5,541,362 3.95
    2026-04-15 91,868,691 98,660,047 -6,791,356 3.90
    2026-03-31 98,660,047 87,660,833 +10,999,214 3.43
    2026-03-13 87,660,833 82,916,967 +4,743,866 2.87
    2026-02-27 82,916,967 89,060,010 -6,143,043 2.57
    2026-02-13 89,060,010 90,772,604 -1,712,594 2.52
    2026-01-30 90,772,604 84,139,220 +6,633,384 2.37
    2026-01-15 84,139,220 90,402,353 -6,263,133 1.63
    2025-12-31 90,402,353 90,532,542 -130,189 3.03
    2025-12-15 90,532,542 91,273,703 -741,161 2.29
    2025-11-28 91,273,703 97,777,843 -6,504,140 1.85
    2025-11-14 97,777,843 80,122,537 +17,655,306 1.11
    2025-10-31 80,122,537 75,556,005 +4,566,532 1.43
    2025-10-15 75,556,005 94,942,500 -19,386,495 1.00

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1824502 CUSIP 03945R102 13F (30d) 23 filings 14 filers Visit website Investor relations