ClearSign Combustion Corporation (CLIR) short interest & short volume · 0.0% of float short
ClearSign Combustion Corporation official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
CLIR short interest rose 14.8% to 15K shares in the Oct 15, 2026 report (0.0% of float, 1.0 days to cover). Daily short volume averaged 35.0% of volume over the last 20 sessions, up from 28.9% the 20 sessions before, the 65th percentile of its own 20-day averages since Sep 23, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 15K
- prior 13K
- % of float
- 0.0%
- float 43.1M
- Days to cover
- 1.0
- avg vol 22K
- Change vs prior report
- +14.8%
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)
- 58.8%
- 3K of 6K
- 20-day average
- 35.0%
- prior 28.9%
- Percentile vs own history
- 65th
- 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: -0.8%
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.
CLIR'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 · CLIR overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 3,297 | 5,609 | 58.8% |
| 2026-10-30 | 470 | 15,113 | 3.1% |
| 2026-10-29 | 1,060 | 4,874 | 21.8% |
| 2026-10-28 | 3,153 | 8,620 | 36.6% |
| 2026-10-27 | 1,587 | 3,995 | 39.7% |
| 2026-10-26 | 5,933 | 16,897 | 35.1% |
| 2026-10-23 | 1,833 | 11,336 | 16.2% |
| 2026-10-22 | 770 | 2,425 | 31.8% |
| 2026-10-21 | 787 | 1,500 | 52.5% |
| 2026-10-20 | 3,345 | 6,736 | 49.7% |
Industrials peers with similar quant ratings
CLIR among 418 rated Industrials stocks (Lician quant rating, Nov 4, 2026). How the rating works
- WTS short interest5.00 · Strong Buy · stock
- AER short interest4.99 · Strong Buy · stock
- PANL short interest4.98 · Strong Buy · stock
- ATRO short interest4.97 · Strong Buy
- GEO short interest4.96 · Strong Buy · stock
- TDG short interest4.95 · Strong Buy · stock
- DAC short interest4.94 · Strong Buy
- RJET short interest4.93 · Strong Buy · stock
CLIR short interest FAQ
What is CLIR's short interest?
ClearSign Combustion Corporation (CLIR) had 15K shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 0.0% of its 43.1M-share float.
How many days to cover does CLIR have?
1.0 days: 15K shares short divided by an average daily volume of 22K for the Oct 15, 2026 period.
Is CLIR short interest rising or falling?
CLIR short interest rose (+14.8%) from 13K to 15K shares in the Oct 15, 2026 report.
Is CLIR a short squeeze candidate?
Lician's squeeze watch scores CLIR 7 out of 100 (low) from the Oct 15, 2026 report: short interest % of float 0.1/40, days to cover 2.5/25, change in short interest vs prior report 4.4/15, 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 CLIR daily volume is sold short?
35.0% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 65th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was CLIR's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for ClearSign Combustion Corporation (CLIR) was 3,297 shares, 58.8% of 5,609 total volume.
How many CLIR short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for ClearSign Combustion Corporation (CLIR), from Oct 20, 2026 through Nov 2, 2026.
How did CLIR short volume percent change from the prior cached session?
Cached FINRA short volume for ClearSign Combustion Corporation (CLIR) moved from 3.1% on Oct 30, 2026 to 58.8% on Nov 2, 2026, up 55.7 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.