PRPH stock
ProPhase Labs Inc (PRPH) short interest & short volume · 0.7% of float short
ProPhase Labs Inc official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
PRPH short interest fell 27.7% to 57K shares in the Oct 15, 2026 report (0.7% of float, 1.0 days to cover). Daily short volume averaged 44.2% of volume over the last 20 sessions, up from 22.8% the 20 sessions before, the 96th percentile of its own 20-day averages since Sep 16, 2025.
Short interest
Official, twice monthly · settled Oct 15, 2026
- Shares short
- 57K
- prior 78K
- % of float
- 0.7%
- float 8.7M
- Days to cover
- 1.0
- avg vol 1.1M
- Change vs prior report
- -27.7%
| Report date | Shares short | $ value short | Change | % float | Days to cover | Price |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | 57K | $567 | -27.7% | 0.7% | 1.0 | $0.01 |
| Sep 30, 2026 | 78K | $948 | +43.7% | 0.9% | 1.0 | $0.01 |
| Sep 15, 2026 | 55K | $818 | +9.6% | 0.6% | 1.0 | $0.01 |
| Aug 31, 2026 | 50K | $1K | -20.5% | 0.6% | 1.0 | $0.02 |
| Aug 14, 2026 | 63K | $3K | +25.7% | 0.7% | 1.0 | $0.04 |
| Jul 31, 2026 | 50K | $2K | +0.0% | 0.6% | 1.0 | $0.04 |
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 (Jan 2)
- 70.1%
- 1.3M of 1.9M
- 20-day average
- 44.2%
- prior 22.8%
- Percentile vs own history
- 96th
- 50 periods since 2025
Loading prices…
Source: FINRA Reg SHO daily short sale volume · Latest Jan 2, 2026
Short squeeze score (model)
Price since settlement: -54.0%
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.
PRPH'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 · PRPH overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-01-02 | 1,324,604 | 1,890,005 | 70.1% |
| 2025-12-31 | 148,766 | 349,550 | 42.6% |
| 2025-12-30 | 126,037 | 286,093 | 44.0% |
| 2025-12-29 | 269,432 | 543,481 | 49.6% |
| 2025-12-26 | 375,827 | 736,728 | 51.0% |
| 2025-12-24 | 299,810 | 568,736 | 52.7% |
| 2025-12-23 | 858,182 | 1,569,695 | 54.7% |
| 2025-12-22 | 1,355,440 | 2,442,784 | 55.5% |
| 2025-12-19 | 75,410,393 | 137,173,952 | 55.0% |
| 2025-12-18 | 1,193,263 | 2,440,725 | 48.9% |
Healthcare peers with similar quant ratings
PRPH among 545 rated Healthcare stocks (Lician quant rating, Nov 13, 2026). How the rating works
- KNSA short interest5.00 · Strong Buy · stock
- QTTB short interest4.99 · Strong Buy · stock
- AVAH short interest4.98 · Strong Buy · stock
- CDNA short interest4.97 · Strong Buy · stock
- EWTX short interest4.97 · Strong Buy · stock
- SNY short interest4.96 · Strong Buy · stock
- REGN short interest4.95 · Strong Buy · stock
- BTSG short interest4.94 · Strong Buy
PRPH short interest FAQ
What is PRPH's short interest?
ProPhase Labs Inc (PRPH) had 57K shares sold short and not yet covered in FINRA's Oct 15, 2026 settlement report, 0.7% of its 8.7M-share float.
How many days to cover does PRPH have?
1.0 days: 57K shares short divided by an average daily volume of 1.1M for the Oct 15, 2026 period.
Is PRPH short interest rising or falling?
PRPH short interest fell (-27.7%) from 78K to 57K shares in the Oct 15, 2026 report.
Is PRPH a short squeeze candidate?
Lician's squeeze watch scores PRPH 3 out of 100 (low) from the Oct 15, 2026 report: short interest % of float 0.9/40, days to cover 2.5/25, 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 PRPH daily volume is sold short?
44.2% on average over the last 20 sessions to Jan 2, 2026 (FINRA Reg SHO daily short volume; the 96th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was PRPH's latest FINRA short volume?
On Jan 2, 2026, cached FINRA short volume for ProPhase Labs Inc (PRPH) was 1,324,604 shares, 70.1% of 1,890,005 total volume.
How many PRPH short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for ProPhase Labs Inc (PRPH), from Dec 18, 2025 through Jan 2, 2026.
How did PRPH short volume percent change from the prior cached session?
Cached FINRA short volume for ProPhase Labs Inc (PRPH) moved from 42.6% on Dec 31, 2025 to 70.1% on Jan 2, 2026, up 27.5 percentage points.
Not investment advice. Figures as filed or reported, not a live feed.