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HYLN stock

Hyliion Holdings Corp. (HYLN) short interest & short volume · 12.5% of float short

Hyliion Holdings Corp. official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.

What changed

HYLN short interest fell 1.9% to 15.0M shares in the Oct 15, 2026 report (12.5% of float, 9.5 days to cover). Daily short volume averaged 53.6% of volume over the last 20 sessions, up from 51.9% the 20 sessions before, the 77th percentile of its own 20-day averages since Sep 23, 2025.

Short interest

Official, twice monthly · settled Oct 15, 2026

Shares short
15.0M
prior 15.3M
% of float
12.5%
float 120.0M
Days to cover
9.5
avg vol 1.6M
Change vs prior report
-1.9%

6 reports

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Days to cover is short interest divided by FINRA's average daily volume for the period: how many average days of trading it would take shorts to buy back.

% of float uses the current float for every report (no float was stored with older reports).

Source: FINRA equity short interest (twice monthly) · Settlement Oct 15, 2026

Daily short volume

Share of each day's volume sold short · FINRA Reg SHO

Latest (Nov 2)
43.3%
199K of 460K
20-day average
53.6%
prior 51.9%
Percentile vs own history
77th
233 periods since 2025

Loading prices…

Short volumeRest of the day's volume

Source: FINRA Reg SHO daily short sale volume · Latest Nov 2, 2026

Short squeeze score (model)

Price since settlement: -4.0%

Model, not a forecast: 40 pts short interest % of float (full at 30%), 25 pts days to cover (full at 10), 15 pts rise in short interest since the prior report (full at +50%), 20 pts price gain since the settlement date (full at +25%). Missing inputs score 0.

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Market-wide: most shorted stocks, biggest changes and unusual short volume · HYLN overview

Last 10 sessions · daily short volume · FINRA Reg SHO
DateShortTotalShort % of volume
2026-11-02199,217460,33843.3%
2026-10-30444,451702,33263.3%
2026-10-29297,274508,30558.5%
2026-10-28165,267297,25355.6%
2026-10-27219,051434,85650.4%
2026-10-26307,566488,70462.9%
2026-10-23497,737805,41661.8%
2026-10-22244,802483,64450.6%
2026-10-21365,161644,55256.6%
2026-10-20308,012573,42753.7%

Consumer Discretionary peers with similar quant ratings

HYLN is rated 2.83 of 5 among 333 rated Consumer Discretionary stocks (Lician quant rating, Nov 4, 2026). How the rating works

HYLN short interest FAQ

What is HYLN's short interest?

Hyliion Holdings Corp. (HYLN) had 15.0M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 12.5% of its 120.0M-share float.

How many days to cover does HYLN have?

9.5 days: 15.0M shares short divided by an average daily volume of 1.6M for the Oct 15, 2026 period.

Is HYLN short interest rising or falling?

HYLN short interest fell (-1.9%) from 15.3M to 15.0M shares in the Oct 15, 2026 report.

Is HYLN a short squeeze candidate?

Lician's squeeze watch scores HYLN 41 out of 100 (elevated) from the Oct 15, 2026 report: short interest % of float 16.7/40, days to cover 23.8/25, change in short interest vs prior report 0/15, price change since settlement date 0/20. It is a transparent model of how crowded the short side is, not a forecast that a squeeze will happen.

What share of HYLN daily volume is sold short?

53.6% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 77th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.

What was HYLN's latest FINRA short volume?

On Nov 2, 2026, cached FINRA short volume for Hyliion Holdings Corp. (HYLN) was 199,217 shares, 43.3% of 460,338 total volume.

How many HYLN short-volume sessions are listed on this page?

This page lists 10 cached FINRA short-volume sessions for Hyliion Holdings Corp. (HYLN), from Oct 20, 2026 through Nov 2, 2026.

How did HYLN short volume percent change from the prior cached session?

Cached FINRA short volume for Hyliion Holdings Corp. (HYLN) moved from 63.3% on Oct 30, 2026 to 43.3% on Nov 2, 2026, down 20.0 percentage points.

Not investment advice. Figures as filed or reported, not a live feed.