Lyell Immunopharma Inc (LYEL) short interest & short volume · 14.6% of float short
Lyell Immunopharma Inc official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
LYEL short interest rose 10.7% to 1.4M shares in the Oct 15, 2026 report (14.6% of float, 7.8 days to cover). Daily short volume averaged 54.5% of volume over the last 20 sessions, up from 48.6% the 20 sessions before, the 76th percentile of its own 20-day averages since Sep 23, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 1.4M
- prior 1.3M
- % of float
- 14.6%
- float 9.6M
- Days to cover
- 7.8
- avg vol 178K
- Change vs prior report
- +10.7%
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)
- 44.8%
- 14K of 32K
- 20-day average
- 54.5%
- prior 48.6%
- Percentile vs own history
- 76th
- 233 periods since 2025
Loading prices…
Source: FINRA Reg SHO daily short sale volume · Latest Nov 2, 2026
Short squeeze score (model)
Price since settlement: +31.5%
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.
LYEL's squeeze score and its inputs with Lician Pro.Start 3-day trial — $149/yr
Market-wide: most shorted stocks, biggest changes and unusual short volume · LYEL overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 14,368 | 32,089 | 44.8% |
| 2026-10-30 | 19,532 | 42,485 | 46.0% |
| 2026-10-29 | 36,143 | 51,689 | 69.9% |
| 2026-10-28 | 18,169 | 48,068 | 37.8% |
| 2026-10-27 | 16,787 | 39,823 | 42.1% |
| 2026-10-26 | 24,004 | 30,430 | 78.9% |
| 2026-10-23 | 24,527 | 48,221 | 50.9% |
| 2026-10-22 | 18,224 | 36,211 | 50.3% |
| 2026-10-21 | 18,138 | 44,793 | 40.5% |
| 2026-10-20 | 43,954 | 61,026 | 72.0% |
Healthcare peers with similar quant ratings
LYEL is rated 1.05 of 5 among 532 rated Healthcare stocks (Lician quant rating, Nov 4, 2026). How the rating works
- IMVT short interest1.08 · Strong Sell · stock
- SANA short interest1.07 · Strong Sell · stock
- GOSS short interest1.06 · Strong Sell · stock
- SVRA short interest1.06 · Strong Sell · stock
- SNDX short interest1.04 · Strong Sell · stock
- AXSM short interest1.03 · Strong Sell · stock
- RGC short interest1.03 · Strong Sell
- CELC short interest1.02 · Strong Sell · stock
LYEL short interest FAQ
What is LYEL's short interest?
Lyell Immunopharma Inc (LYEL) had 1.4M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 14.6% of its 9.6M-share float.
How many days to cover does LYEL have?
7.8 days: 1.4M shares short divided by an average daily volume of 178K for the Oct 15, 2026 period.
Is LYEL short interest rising or falling?
LYEL short interest rose (+10.7%) from 1.3M to 1.4M shares in the Oct 15, 2026 report.
Is LYEL a short squeeze candidate?
Lician's squeeze watch scores LYEL 62 out of 100 (elevated) from the Oct 15, 2026 report: short interest % of float 19.5/40, days to cover 19.6/25, change in short interest vs prior report 3.2/15, price change since settlement date 20/20. It is a transparent model of how crowded the short side is, not a forecast that a squeeze will happen.
What share of LYEL daily volume is sold short?
54.5% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 76th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was LYEL's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Lyell Immunopharma Inc (LYEL) was 14,368 shares, 44.8% of 32,089 total volume.
How many LYEL short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Lyell Immunopharma Inc (LYEL), from Oct 20, 2026 through Nov 2, 2026.
How did LYEL short volume percent change from the prior cached session?
Cached FINRA short volume for Lyell Immunopharma Inc (LYEL) moved from 46.0% on Oct 30, 2026 to 44.8% on Nov 2, 2026, down 1.2 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.