Arm Holdings plc American Depositary Shares (ARM) short interest & short volume · 13.5% of float short
Arm Holdings plc American Depositary Shares official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
ARM short interest rose 9.3% to 17.7M shares in the Oct 15, 2026 report (13.5% of float, 3.8 days to cover). Daily short volume averaged 54.1% of volume over the last 20 sessions, down from 57.7% the 20 sessions before, the 42nd percentile of its own 20-day averages since Sep 22, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 17.7M
- prior 16.2M
- % of float
- 13.5%
- float 131.3M
- Days to cover
- 3.8
- avg vol 4.7M
- Change vs prior report
- +9.3%
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)
- 54.4%
- 1.3M of 2.4M
- 20-day average
- 54.1%
- prior 57.7%
- Percentile vs own history
- 42nd
- 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: -17.3%
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.
ARM'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 · ARM overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-02 | 1,291,883 | 2,375,137 | 54.4% |
| 2026-10-30 | 1,803,072 | 4,113,389 | 43.8% |
| 2026-10-29 | 1,030,061 | 2,168,208 | 47.5% |
| 2026-10-28 | 775,061 | 1,689,401 | 45.9% |
| 2026-10-27 | 791,572 | 1,559,781 | 50.8% |
| 2026-10-26 | 1,353,451 | 2,270,420 | 59.6% |
| 2026-10-23 | 490,921 | 1,038,067 | 47.3% |
| 2026-10-22 | 1,571,472 | 2,440,009 | 64.4% |
| 2026-10-21 | 732,402 | 1,462,575 | 50.1% |
| 2026-10-20 | 1,086,357 | 2,026,847 | 53.6% |
Technology peers with similar quant ratings
ARM is rated 3.37 of 5 among 462 rated Technology stocks (Lician quant rating, Nov 4, 2026). How the rating works
- OSIS short interest3.41 · Hold · stock
- CRSR short interest3.40 · Hold · stock
- BR short interest3.39 · Hold · stock
- IBTA short interest3.38 · Hold · stock
- GDYN short interest3.36 · Hold · stock
- JKHY short interest3.36 · Hold · stock
- BLKB short interest3.34 · Hold · stock
- SHOP short interest3.34 · Hold · stock
ARM short interest FAQ
What is ARM's short interest?
Arm Holdings plc American Depositary Shares (ARM) had 17.7M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 13.5% of its 131.3M-share float.
How many days to cover does ARM have?
3.8 days: 17.7M shares short divided by an average daily volume of 4.7M for the Oct 15, 2026 period.
Is ARM short interest rising or falling?
ARM short interest rose (+9.3%) from 16.2M to 17.7M shares in the Oct 15, 2026 report.
Is ARM a short squeeze candidate?
Lician's squeeze watch scores ARM 30 out of 100 (low) from the Oct 15, 2026 report: short interest % of float 18/40, days to cover 9.4/25, change in short interest vs prior report 2.8/15, 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 ARM daily volume is sold short?
54.1% on average over the last 20 sessions to Nov 2, 2026 (FINRA Reg SHO daily short volume; the 42nd percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was ARM's latest FINRA short volume?
On Nov 2, 2026, cached FINRA short volume for Arm Holdings plc American Depositary Shares (ARM) was 1,291,883 shares, 54.4% of 2,375,137 total volume.
How many ARM short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Arm Holdings plc American Depositary Shares (ARM), from Oct 20, 2026 through Nov 2, 2026.
How did ARM short volume percent change from the prior cached session?
Cached FINRA short volume for Arm Holdings plc American Depositary Shares (ARM) moved from 43.8% on Oct 30, 2026 to 54.4% on Nov 2, 2026, up 10.6 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.