MRX stock
MRX (MRX) short interest & short volume · 2.4M shares short
MRX official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
MRX short interest fell 7.6% to 2.4M shares in the Oct 15, 2026 report (3.5 days to cover). Daily short volume averaged 47.9% of volume over the last 20 sessions, up from 41.5% the 20 sessions before, the 74th percentile of its own 20-day averages since Oct 6, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 2.4M
- prior 2.6M
- % of float
- —
- no float on file
- Days to cover
- 3.5
- avg vol 690K
- Change vs prior report
- -7.6%
| Report date | Shares short | $ value short | Change | % float | Days to cover | Price |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | 2.4M | $175.3M | -7.6% | — | 3.5 | $72.30 |
| Sep 30, 2026 | 2.6M | $183.1M | +3.0% | — | 3.5 | $69.76 |
| Sep 15, 2026 | 2.5M | $174.2M | -0.1% | — | 2.8 | $68.40 |
| Aug 31, 2026 | 2.6M | $184.9M | -12.2% | — | 4.8 | $72.48 |
| Aug 14, 2026 | 2.9M | $206.3M | -1.7% | — | 4.0 | $71.06 |
| Jul 31, 2026 | 3.0M | $191.8M | -12.8% | — | 4.3 | $64.92 |
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)
- 60.1%
- 185K of 308K
- 20-day average
- 47.9%
- prior 41.5%
- Percentile vs own history
- 74th
- 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: -0.9%
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.
MRX'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 · MRX overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-11-11 | 184,932 | 307,711 | 60.1% |
| 2026-11-10 | 125,092 | 230,580 | 54.3% |
| 2026-11-09 | 125,238 | 277,334 | 45.2% |
| 2026-11-06 | 222,825 | 413,072 | 53.9% |
| 2026-11-05 | 428,760 | 603,295 | 71.1% |
| 2026-11-04 | 285,983 | 422,244 | 67.7% |
| 2026-11-03 | 129,900 | 257,306 | 50.5% |
| 2026-11-02 | 114,548 | 247,529 | 46.3% |
| 2026-10-30 | 98,608 | 354,712 | 27.8% |
| 2026-10-29 | 85,485 | 420,326 | 20.3% |
Financials peers with similar quant ratings
MRX is rated 4.32 of 5 among 524 rated Financials stocks (Lician quant rating, Nov 13, 2026). How the rating works
- KNSL short interest4.35 · Buy · stock
- FSBC short interest4.34 · Buy · stock
- PRAA short interest4.34 · Buy · stock
- EG short interest4.33 · Buy · stock
- CPF short interest4.31 · Buy · stock
- VLY short interest4.31 · Buy
- GLAD short interest4.30 · Buy · stock
- LNC short interest4.29 · Buy · stock
MRX on Lician stock screens
MRX is rated Buy (4.32 of 5) and passes 1 of 9 preset screens on the Nov 13, 2026 quant run. Build your own screen
MRX short interest FAQ
What is MRX's short interest?
MRX had 2.4M shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report.
How many days to cover does MRX have?
3.5 days: 2.4M shares short divided by an average daily volume of 690K for the Oct 15, 2026 period.
Is MRX short interest rising or falling?
MRX short interest fell (-7.6%) from 2.6M to 2.4M shares in the Oct 15, 2026 report.
Is MRX a short squeeze candidate?
Lician's squeeze watch scores MRX 9 out of 100 (low) from the Oct 15, 2026 report: days to cover 8.8/25, 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 MRX daily volume is sold short?
47.9% on average over the last 20 sessions to Nov 11, 2026 (FINRA Reg SHO daily short volume; the 74th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was MRX's latest FINRA short volume?
On Nov 11, 2026, cached FINRA short volume for MRX was 184,932 shares, 60.1% of 307,711 total volume.
How many MRX short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for MRX, from Oct 29, 2026 through Nov 11, 2026.
How did MRX short volume percent change from the prior cached session?
Cached FINRA short volume for MRX moved from 54.3% on Nov 10, 2026 to 60.1% on Nov 11, 2026, up 5.8 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.