Pulmonx Corp (LUNG) short interest & short volume · 1.8% of float short
Pulmonx Corp official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
LUNG short interest fell 13.0% to 699K shares in the Oct 15, 2026 report (1.8% of float, 2.5 days to cover). Daily short volume averaged 44.3% of volume over the last 20 sessions, up from 43.6% the 20 sessions before, the 68th percentile of its own 20-day averages since Sep 23, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 699K
- prior 803K
- % of float
- 1.8%
- float 39.2M
- Days to cover
- 2.5
- avg vol 275K
- Change vs prior report
- -13.0%
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)
- 26.3%
- 155K of 592K
- 20-day average
- 44.3%
- prior 43.6%
- Percentile vs own history
- 68th
- 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: +47.0%
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.
LUNG'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 · LUNG overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 155,480 | 591,869 | 26.3% |
| 2026-10-30 | 448,644 | 1,168,638 | 38.4% |
| 2026-10-29 | 1,284,029 | 2,845,499 | 45.1% |
| 2026-10-28 | 1,828,232 | 4,363,220 | 41.9% |
| 2026-10-27 | 68,104 | 104,585 | 65.1% |
| 2026-10-26 | 247,553 | 408,337 | 60.6% |
| 2026-10-23 | 49,742 | 134,010 | 37.1% |
| 2026-10-22 | 39,287 | 55,916 | 70.3% |
| 2026-10-21 | 47,481 | 121,491 | 39.1% |
| 2026-10-20 | 10,634 | 39,157 | 27.2% |
Healthcare peers with similar quant ratings
LUNG is rated 4.27 of 5 among 532 rated Healthcare stocks (Lician quant rating, Nov 4, 2026). How the rating works
- CNC short interest4.30 · Buy · stock
- SGRY short interest4.30 · Buy · stock
- ISRG short interest4.29 · Buy · stock
- ILMN short interest4.28 · Buy · stock
- SOLV short interest4.27 · Buy · stock
- ELV short interest4.26 · Buy · stock
- ANIK short interest4.25 · Buy · stock
- DOCS short interest4.24 · Buy · stock
LUNG on Lician stock screens
LUNG is rated Buy (4.27 of 5) and passes 2 of 9 preset screens on the Nov 4, 2026 quant run. Build your own screen
LUNG short interest FAQ
What is LUNG's short interest?
Pulmonx Corp (LUNG) had 699K shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 1.8% of its 39.2M-share float.
How many days to cover does LUNG have?
2.5 days: 699K shares short divided by an average daily volume of 275K for the Oct 15, 2026 period.
Is LUNG short interest rising or falling?
LUNG short interest fell (-13.0%) from 803K to 699K shares in the Oct 15, 2026 report.
Is LUNG a short squeeze candidate?
Lician's squeeze watch scores LUNG 29 out of 100 (low) from the Oct 15, 2026 report: short interest % of float 2.4/40, days to cover 6.4/25, change in short interest vs prior report 0/15, 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 LUNG daily volume is sold short?
44.3% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 68th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was LUNG's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Pulmonx Corp (LUNG) was 155,480 shares, 26.3% of 591,869 total volume.
How many LUNG short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Pulmonx Corp (LUNG), from Oct 20, 2026 through Nov 2, 2026.
How did LUNG short volume percent change from the prior cached session?
Cached FINRA short volume for Pulmonx Corp (LUNG) moved from 38.4% on Oct 30, 2026 to 26.3% on Nov 2, 2026, down 12.1 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.