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HYLN · Hyliion Holdings Corp.

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$3.69 +0.03 (+0.82%) At close · Sep 4
Russell 2000 member Rebalance outlook locked
Market Cap
$659.02M
Shares
178.60M

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 →

HYLN Latest Reported Short Interest

FINRA reported 17,826,174 HYLN shares sold short as of the August 14, 2026 settlement date, an increase of 1,265,697 shares. Days to cover was 4.26 based on FINRA's reported average daily volume.

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

HYLN Short Interest Forecast

Equibles' model estimates 17,555,000 shares sold short for the August 31, 2026 settlement, -1.5% versus the latest reported position, with a likely range of 15,637,202 to 19,794,755 shares. This model prediction uses FINRA data through August 31, 2026; FINRA's official release is expected September 10, 2026.

Model estimate

Expected Aug 31 short interest

as of Aug 31 Low confidence 56% chance it rises
17,555,000 -1.5% vs reported
Likely range 15,637,202 to 19,794,755 The latest estimate appears in the chart below. Official release expected Sep 10. Methodology
Short Squeeze Score
63/100
Short interest 10.0% of shares — P90 Days to cover 4.3 — P63 Price vs VWAP -27.4% — P8 Short-volume trend +4.3% — P67 Short interest change +7.6% — P73 Worst FTD 0.01% of shares — P49

Positioning score 62.9 + 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 (2026-08-14). 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 2026-09-07 10:54 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
    2026-09-15 Scheduled
    FINRA publishes Sep 24
    		 — — — —
    2026-08-31 Scheduled
    FINRA publishes Sep 10
    		 — — — —
    2026-08-14 17,826,174 16,560,477 +1,265,697 4.26
    2026-07-31 16,560,477 15,120,944 +1,439,533 5.92
    2026-07-15 15,120,944 11,299,745 +3,821,199 5.38
    2026-06-30 11,299,745 10,627,659 +672,086 1.79
    2026-06-15 10,627,659 10,209,812 +417,847 1.62
    2026-05-29 10,209,812 13,028,206 -2,818,394 1.25
    2026-05-15 13,028,206 13,860,494 -832,288 3.86
    2026-04-30 13,860,494 13,569,273 +291,221 18.88
    2026-04-15 13,569,273 13,488,964 +80,309 18.78
    2026-03-31 13,488,964 13,257,897 +231,067 12.69
    2026-03-13 13,257,897 13,448,742 -190,845 12.35
    2026-02-27 13,448,742 12,997,046 +451,696 12.69
    2026-02-13 12,997,046 12,697,827 +299,219 13.14
    2026-01-30 12,697,827 14,320,476 -1,622,649 15.20
    2026-01-15 14,320,476 14,773,909 -453,433 15.76
    2025-12-31 14,773,909 15,648,292 -874,383 11.64
    2025-12-15 15,648,292 15,873,704 -225,412 18.43
    2025-11-28 15,873,704 15,872,292 +1,412 13.48
    2025-11-14 15,872,292 15,695,216 +177,076 7.78
    2025-10-31 15,695,216 16,826,335 -1,131,119 8.24
    2025-10-15 16,826,335 16,563,513 +262,822 8.60
    2025-09-30 16,563,513 16,807,943 -244,430 8.86
    2025-09-15 16,807,943 16,856,408 -48,465 24.31

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1759631 CUSIP 449109107 13F (30d) 111 filings 111 filers Visit website Investor relations