ATS Corporation (ATS) short interest & short volume · 3.1% of float short
ATS Corporation official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
ATS short interest rose 9.6% to 2.5M shares in the Oct 15, 2026 report (3.1% of float, 11.5 days to cover). Daily short volume averaged 42.5% of volume over the last 20 sessions, down from 52.8% the 20 sessions before, the 2nd percentile of its own 20-day averages since Oct 2, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 2.5M
- prior 2.3M
- % of float
- 3.1%
- float 81.3M
- Days to cover
- 11.5
- avg vol 219K
- Change vs prior report
- +9.6%
| Report date | Shares short | $ value short | Change | % float | Days to cover | Price |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | 2.5M | $45.6M | +9.6% | 3.1% | 11.5 | $18.09 |
| Sep 30, 2026 | 2.3M | $41.5M | +7.0% | 2.8% | 10.3 | $18.05 |
| Sep 15, 2026 | 2.2M | $41.3M | +9.4% | 2.6% | 5.9 | $19.18 |
| Aug 31, 2026 | 2.0M | $37.9M | -3.3% | 2.4% | 8.3 | $19.26 |
| Aug 14, 2026 | 2.0M | $41.3M | +1.4% | 2.5% | 5.6 | $20.31 |
| Jul 31, 2026 | 2.0M | $54.6M | +5.4% | 2.5% | 15.2 | $27.24 |
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 11)
- 46.2%
- 19K of 42K
- 20-day average
- 42.5%
- prior 52.8%
- Percentile vs own history
- 2nd
- 233 periods since 2025
Loading prices…
Source: FINRA Reg SHO daily short sale volume · Latest Nov 11, 2026
Short squeeze score (model)
Price since settlement: -5.0%
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.
ATS'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 · ATS overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-11 | 19,427 | 42,021 | 46.2% |
| 2026-11-10 | 20,476 | 38,801 | 52.8% |
| 2026-11-09 | 30,703 | 84,169 | 36.5% |
| 2026-11-06 | 27,354 | 60,916 | 44.9% |
| 2026-11-05 | 38,264 | 75,835 | 50.5% |
| 2026-11-04 | 59,649 | 125,549 | 47.5% |
| 2026-11-03 | 16,483 | 52,195 | 31.6% |
| 2026-11-02 | 25,186 | 69,379 | 36.3% |
| 2026-10-30 | 26,453 | 67,321 | 39.3% |
| 2026-10-29 | 15,345 | 42,232 | 36.3% |
Industrials peers with similar quant ratings
ATS among 425 rated Industrials stocks (Lician quant rating, Nov 13, 2026). How the rating works
- CXW short interest5.00 · Strong Buy · stock
- ASC short interest4.99 · Strong Buy
- GEO short interest4.98 · Strong Buy · stock
- PANL short interest4.97 · Strong Buy · stock
- GSL short interest4.96 · Strong Buy · stock
- WTS short interest4.95 · Strong Buy · stock
- AER short interest4.94 · Strong Buy · stock
- ATRO short interest4.93 · Strong Buy
ATS short interest FAQ
What is ATS's short interest?
ATS Corporation (ATS) had 2.5M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 3.1% of its 81.3M-share float.
How many days to cover does ATS have?
11.5 days: 2.5M shares short divided by an average daily volume of 219K for the Oct 15, 2026 period.
Is ATS short interest rising or falling?
ATS short interest rose (+9.6%) from 2.3M to 2.5M shares in the Oct 15, 2026 report.
Is ATS a short squeeze candidate?
Lician's squeeze watch scores ATS 32 out of 100 (low) from the Oct 15, 2026 report: short interest % of float 4.1/40, days to cover 25/25, change in short interest vs prior report 2.9/15, 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 ATS daily volume is sold short?
42.5% on average over the last 20 sessions to Nov 11, 2026 (FINRA Reg SHO daily short volume; the 2nd percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was ATS's latest FINRA short volume?
On Nov 11, 2026, cached FINRA short volume for ATS Corporation (ATS) was 19,427 shares, 46.2% of 42,021 total volume.
How many ATS short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for ATS Corporation (ATS), from Oct 29, 2026 through Nov 11, 2026.
How did ATS short volume percent change from the prior cached session?
Cached FINRA short volume for ATS Corporation (ATS) moved from 52.8% on Nov 10, 2026 to 46.2% on Nov 11, 2026, down 6.6 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.