Firefly Aerospace Inc. Common Stock (FLY) short interest & short volume · 13.5M shares short
Firefly Aerospace Inc. Common Stock official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
FLY short interest rose 12.9% to 13.5M shares in the Oct 15, 2026 report (4.0 days to cover). Daily short volume averaged 59.8% of volume over the last 20 sessions, up from 51.3% the 20 sessions before, the 100th percentile of its own 20-day averages since Sep 23, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 13.5M
- prior 11.9M
- % of float
- —
- no float on file
- Days to cover
- 4.0
- avg vol 3.4M
- Change vs prior report
- +12.9%
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)
- 69.3%
- 876K of 1.3M
- 20-day average
- 59.8%
- prior 51.3%
- Percentile vs own history
- 100th
- 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: -4.6%
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.
FLY'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 · FLY overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 876,276 | 1,263,467 | 69.3% |
| 2026-10-30 | 724,512 | 1,245,191 | 58.2% |
| 2026-10-29 | 464,827 | 773,906 | 60.1% |
| 2026-10-28 | 437,197 | 629,374 | 69.5% |
| 2026-10-27 | 740,172 | 1,323,954 | 55.9% |
| 2026-10-26 | 631,554 | 940,351 | 67.2% |
| 2026-10-23 | 648,199 | 883,662 | 73.3% |
| 2026-10-22 | 682,419 | 951,401 | 71.7% |
| 2026-10-21 | 850,482 | 1,254,753 | 67.8% |
| 2026-10-20 | 541,657 | 874,302 | 62.0% |
Industrials peers with similar quant ratings
FLY is rated 1.08 of 5 among 418 rated Industrials stocks (Lician quant rating, Nov 4, 2026). How the rating works
- AIRO short interest1.12 · Strong Sell · stock
- CHRN short interest1.11 · Strong Sell · stock
- RAIL short interest1.10 · Strong Sell · stock
- HY short interest1.09 · Strong Sell · stock
- LTBR short interest1.07 · Strong Sell · stock
- ACHR short interest1.06 · Strong Sell
- PESI short interest1.05 · Strong Sell · stock
- SPIR short interest1.04 · Strong Sell · stock
FLY short interest FAQ
What is FLY's short interest?
Firefly Aerospace Inc. Common Stock (FLY) had 13.5M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report.
How many days to cover does FLY have?
4.0 days: 13.5M shares short divided by an average daily volume of 3.4M for the Oct 15, 2026 period.
Is FLY short interest rising or falling?
FLY short interest rose (+12.9%) from 11.9M to 13.5M shares in the Oct 15, 2026 report.
Is FLY a short squeeze candidate?
Lician's squeeze watch scores FLY 14 out of 100 (low) from the Oct 15, 2026 report: days to cover 9.9/25, change in short interest vs prior report 3.9/15, 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 FLY daily volume is sold short?
59.8% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 100th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was FLY's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Firefly Aerospace Inc. Common Stock (FLY) was 876,276 shares, 69.3% of 1,263,467 total volume.
How many FLY short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Firefly Aerospace Inc. Common Stock (FLY), from Oct 20, 2026 through Nov 2, 2026.
How did FLY short volume percent change from the prior cached session?
Cached FINRA short volume for Firefly Aerospace Inc. Common Stock (FLY) moved from 58.2% on Oct 30, 2026 to 69.3% on Nov 2, 2026, up 11.1 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.