Pulse Biosciences Inc (PLSE) short interest & short volume · 17.2% of float short
Pulse Biosciences Inc official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
PLSE short interest fell 9.3% to 3.0M shares in the Oct 15, 2026 report (17.2% of float, 7.2 days to cover). Daily short volume averaged 58.5% of volume over the last 20 sessions, up from 52.7% the 20 sessions before, the 34th percentile of its own 20-day averages since Sep 23, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 3.0M
- prior 3.3M
- % of float
- 17.2%
- float 17.4M
- Days to cover
- 7.2
- avg vol 417K
- Change vs prior report
- -9.3%
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)
- 62.4%
- 70K of 112K
- 20-day average
- 58.5%
- prior 52.7%
- Percentile vs own history
- 34th
- 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: +14.5%
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.
PLSE'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 · PLSE overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 69,726 | 111,714 | 62.4% |
| 2026-10-30 | 74,237 | 172,308 | 43.1% |
| 2026-10-29 | 68,009 | 127,434 | 53.4% |
| 2026-10-28 | 48,853 | 123,377 | 39.6% |
| 2026-10-27 | 43,413 | 99,205 | 43.8% |
| 2026-10-26 | 55,496 | 109,571 | 50.6% |
| 2026-10-23 | 99,170 | 195,490 | 50.7% |
| 2026-10-22 | 143,390 | 204,272 | 70.2% |
| 2026-10-21 | 64,779 | 141,424 | 45.8% |
| 2026-10-20 | 104,270 | 152,080 | 68.6% |
Healthcare peers with similar quant ratings
PLSE is rated 1.98 of 5 among 532 rated Healthcare stocks (Lician quant rating, Nov 4, 2026). How the rating works
- RCKT short interest2.01 · Sell
- MASS short interest2.00 · Sell · stock
- WHWK short interest2.00 · Sell · stock
- AVBP short interest1.99 · Sell · stock
- ADCT short interest1.97 · Sell · stock
- ALEC short interest1.97 · Sell · stock
- ZLAB short interest1.96 · Sell · stock
- LRMR short interest1.95 · Sell · stock
PLSE short interest FAQ
What is PLSE's short interest?
Pulse Biosciences Inc (PLSE) had 3.0M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 17.2% of its 17.4M-share float.
How many days to cover does PLSE have?
7.2 days: 3.0M shares short divided by an average daily volume of 417K for the Oct 15, 2026 period.
Is PLSE short interest rising or falling?
PLSE short interest fell (-9.3%) from 3.3M to 3.0M shares in the Oct 15, 2026 report.
Is PLSE a short squeeze candidate?
Lician's squeeze watch scores PLSE 53 out of 100 (elevated) from the Oct 15, 2026 report: short interest % of float 23/40, days to cover 18/25, change in short interest vs prior report 0/15, price change since settlement date 11.6/20. It is a transparent model of how crowded the short side is, not a forecast that a squeeze will happen.
What share of PLSE daily volume is sold short?
58.5% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 34th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was PLSE's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Pulse Biosciences Inc (PLSE) was 69,726 shares, 62.4% of 111,714 total volume.
How many PLSE short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Pulse Biosciences Inc (PLSE), from Oct 20, 2026 through Nov 2, 2026.
How did PLSE short volume percent change from the prior cached session?
Cached FINRA short volume for Pulse Biosciences Inc (PLSE) moved from 43.1% on Oct 30, 2026 to 62.4% on Nov 2, 2026, up 19.3 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.