Hudson Technologies Inc (HDSN) short interest & short volume · 2.6M shares short
Hudson Technologies Inc official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
HDSN short interest fell 3.5% to 2.6M shares in the Oct 15, 2026 report (8.6 days to cover). Daily short volume averaged 48.6% of volume over the last 20 sessions, down from 52.1% the 20 sessions before, the 46th percentile of its own 20-day averages since Sep 23, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 2.6M
- prior 2.7M
- % of float
- —
- no float on file
- Days to cover
- 8.6
- avg vol 301K
- Change vs prior report
- -3.5%
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.
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)
- 42.0%
- 91K of 217K
- 20-day average
- 48.6%
- prior 52.1%
- Percentile vs own history
- 46th
- 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: -14.3%
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.
HDSN'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 · HDSN overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 91,078 | 216,571 | 42.0% |
| 2026-10-30 | 260,499 | 691,183 | 37.7% |
| 2026-10-29 | 418,024 | 1,812,568 | 23.1% |
| 2026-10-28 | 56,545 | 168,085 | 33.6% |
| 2026-10-27 | 31,591 | 117,860 | 26.8% |
| 2026-10-26 | 47,389 | 124,387 | 38.1% |
| 2026-10-23 | 106,584 | 217,288 | 49.0% |
| 2026-10-22 | 60,542 | 186,595 | 32.5% |
| 2026-10-21 | 69,851 | 127,614 | 54.7% |
| 2026-10-20 | 157,073 | 276,077 | 56.9% |
Materials peers with similar quant ratings
HDSN is rated 2.22 of 5 among 146 rated Materials stocks (Lician quant rating, Nov 4, 2026). How the rating works
- APD short interest2.33 · Sell · stock
- KOP short interest2.30 · Sell · stock
- SCL short interest2.27 · Sell · stock
- GORO short interest2.25 · Sell · stock
- MT short interest2.19 · Sell
- PRM short interest2.16 · Sell · stock
- LAC short interest2.14 · Sell · stock
- SBSW short interest2.11 · Sell
HDSN short interest FAQ
What is HDSN's short interest?
Hudson Technologies Inc (HDSN) had 2.6M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report.
How many days to cover does HDSN have?
8.6 days: 2.6M shares short divided by an average daily volume of 301K for the Oct 15, 2026 period.
Is HDSN short interest rising or falling?
HDSN short interest fell (-3.5%) from 2.7M to 2.6M shares in the Oct 15, 2026 report.
Is HDSN a short squeeze candidate?
Lician's squeeze watch scores HDSN 22 out of 100 (low) from the Oct 15, 2026 report: days to cover 21.6/25, 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 HDSN daily volume is sold short?
48.6% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 46th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was HDSN's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Hudson Technologies Inc (HDSN) was 91,078 shares, 42.0% of 216,571 total volume.
How many HDSN short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Hudson Technologies Inc (HDSN), from Oct 20, 2026 through Nov 2, 2026.
How did HDSN short volume percent change from the prior cached session?
Cached FINRA short volume for Hudson Technologies Inc (HDSN) moved from 37.7% on Oct 30, 2026 to 42.0% on Nov 2, 2026, up 4.3 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.