UMAY stock
Innovator ETFs Trust - Innovator S&P 500 Ultra Buffer ETF - May (UMAY) short interest & short volume · 36K shares short
Innovator ETFs Trust - Innovator S&P 500 Ultra Buffer ETF - May official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
UMAY short interest fell 30.9% to 36K shares in the Oct 15, 2026 report (4.3 days to cover). Daily short volume averaged 23.8% of volume over the last 20 sessions, up from 18.7% the 20 sessions before, the 46th percentile of its own 20-day averages since Sep 16, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 36K
- prior 53K
- % of float
- —
- no float on file
- Days to cover
- 4.3
- avg vol 9K
- Change vs prior report
- -30.9%
| Report date | Shares short | $ value short | Change | % float | Days to cover | Price |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | 36K | $1.4M | -30.9% | — | 4.3 | $39.08 |
| Sep 30, 2026 | 53K | $2.0M | +31.6% | — | 4.3 | $38.77 |
| Sep 15, 2026 | 40K | $1.5M | +3.9% | — | 4.3 | $38.51 |
| Aug 31, 2026 | 39K | $1.5M | -3.4% | — | 8.5 | $38.65 |
| Aug 14, 2026 | 40K | $1.5M | -1.9% | — | 7.5 | $38.72 |
| Jul 31, 2026 | 41K | $1.5M | -6.2% | — | 3.8 | $38.02 |
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 11)
- 65.3%
- 779 of 1K
- 20-day average
- 23.8%
- prior 18.7%
- Percentile vs own history
- 46th
- 227 periods since 2025
Loading prices…
Source: FINRA Reg SHO daily short sale volume · Latest Nov 11, 2026
Short squeeze score (model)
Price since settlement: -0.7%
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.
UMAY'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 · UMAY overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-11 | 779 | 1,192 | 65.3% |
| 2026-11-09 | 147 | 1,295 | 11.3% |
| 2026-11-06 | 124 | 1,973 | 6.3% |
| 2026-11-05 | 2,600 | 4,495 | 57.8% |
| 2026-11-04 | 988 | 2,331 | 42.4% |
| 2026-11-03 | 412 | 10,646 | 3.9% |
| 2026-11-02 | 676 | 7,103 | 9.5% |
| 2026-10-30 | 6 | 9,394 | 0.1% |
| 2026-10-29 | 781 | 1,166 | 67.0% |
| 2026-10-28 | 23 | 4,622 | 0.5% |
UMAY short interest FAQ
What is UMAY's short interest?
Innovator ETFs Trust - Innovator S&P 500 Ultra Buffer ETF - May (UMAY) had 36K shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report.
How many days to cover does UMAY have?
4.3 days: 36K shares short divided by an average daily volume of 9K for the Oct 15, 2026 period.
Is UMAY short interest rising or falling?
UMAY short interest fell (-30.9%) from 53K to 36K shares in the Oct 15, 2026 report.
Is UMAY a short squeeze candidate?
Lician's squeeze watch scores UMAY 11 out of 100 (low) from the Oct 15, 2026 report: days to cover 10.7/25, 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 UMAY daily volume is sold short?
23.8% on average over the last 20 sessions to Nov 11, 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 UMAY's latest FINRA short volume?
On Nov 11, 2026, cached FINRA short volume for Innovator ETFs Trust - Innovator S&P 500 Ultra Buffer ETF - May (UMAY) was 779 shares, 65.3% of 1,192 total volume.
How many UMAY short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Innovator ETFs Trust - Innovator S&P 500 Ultra Buffer ETF - May (UMAY), from Oct 28, 2026 through Nov 11, 2026.
How did UMAY short volume percent change from the prior cached session?
Cached FINRA short volume for Innovator ETFs Trust - Innovator S&P 500 Ultra Buffer ETF - May (UMAY) moved from 11.3% on Nov 9, 2026 to 65.3% on Nov 11, 2026, up 54.0 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.