Astrotech Corp (ASTC) short interest & short volume · 5.3% of float short
Astrotech Corp official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
ASTC short interest fell 30.3% to 62K shares in the Oct 15, 2026 report (5.3% of float, 1.9 days to cover). Daily short volume averaged 53.7% of volume over the last 20 sessions, up from 52.3% the 20 sessions before, the 81st percentile of its own 20-day averages since Sep 22, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 62K
- prior 88K
- % of float
- 5.3%
- float 1.2M
- Days to cover
- 1.9
- avg vol 33K
- Change vs prior report
- -30.3%
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)
- 45.8%
- 7K of 16K
- 20-day average
- 53.7%
- prior 52.3%
- Percentile vs own history
- 81st
- 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: -6.5%
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.
ASTC'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 · ASTC overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 7,109 | 15,513 | 45.8% |
| 2026-10-30 | 3,119 | 7,412 | 42.1% |
| 2026-10-29 | 2,005 | 4,376 | 45.8% |
| 2026-10-28 | 5,477 | 27,113 | 20.2% |
| 2026-10-27 | 4,366 | 11,151 | 39.1% |
| 2026-10-26 | 3,280 | 5,170 | 63.4% |
| 2026-10-23 | 3,470 | 5,792 | 59.9% |
| 2026-10-22 | 4,907 | 7,253 | 67.7% |
| 2026-10-21 | 14,937 | 24,214 | 61.7% |
| 2026-10-20 | 6,339 | 25,463 | 24.9% |
Technology peers with similar quant ratings
ASTC among 462 rated Technology stocks (Lician quant rating, Nov 4, 2026). How the rating works
- MU short interest5.00 · Strong Buy · stock
- GCT short interest4.99 · Strong Buy · stock
- TXN short interest4.98 · Strong Buy · stock
- XZO short interest4.97 · Strong Buy
- DAVE short interest4.96 · Strong Buy
- SNDK short interest4.95 · Strong Buy · stock
- APH short interest4.94 · Strong Buy · stock
- GEN short interest4.93 · Strong Buy · stock
ASTC short interest FAQ
What is ASTC's short interest?
Astrotech Corp (ASTC) had 62K shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 5.3% of its 1.2M-share float.
How many days to cover does ASTC have?
1.9 days: 62K shares short divided by an average daily volume of 33K for the Oct 15, 2026 period.
Is ASTC short interest rising or falling?
ASTC short interest fell (-30.3%) from 88K to 62K shares in the Oct 15, 2026 report.
Is ASTC a short squeeze candidate?
Lician's squeeze watch scores ASTC 12 out of 100 (low) from the Oct 15, 2026 report: short interest % of float 7.1/40, days to cover 4.7/25, 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 ASTC daily volume is sold short?
53.7% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 81st percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was ASTC's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Astrotech Corp (ASTC) was 7,109 shares, 45.8% of 15,513 total volume.
How many ASTC short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Astrotech Corp (ASTC), from Oct 20, 2026 through Nov 2, 2026.
How did ASTC short volume percent change from the prior cached session?
Cached FINRA short volume for Astrotech Corp (ASTC) moved from 42.1% on Oct 30, 2026 to 45.8% on Nov 2, 2026, up 3.7 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.