Kezar Life Sciences Inc (KZR) short interest & short volume
Kezar Life Sciences Inc official short interest (FINRA, twice monthly) and daily short volume (FINRA Reg SHO), with history, % of float and days to cover.
What changed
Daily short volume averaged 21.9% of volume over the last 20 sessions, down from 30.6% the 20 sessions before, the 8th percentile of its own 20-day averages since Sep 16, 2025.
Short interest
Official, twice monthly
No short-interest report on file for KZR yet. FINRA publishes one twice a month; this page fills in after the next load.
Daily short volume
Share of each day's volume sold short · FINRA Reg SHO
- Latest (May 8)
- 46.5%
- 23K of 50K
- 20-day average
- 21.9%
- prior 30.6%
- Percentile vs own history
- 8th
- 137 periods since 2025
Loading prices…
Source: FINRA Reg SHO daily short sale volume · Latest May 8, 2026
Short squeeze score (model)
No FINRA short-interest report on file for KZR, so there is nothing to score.
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.
Market-wide: most shorted stocks, biggest changes and unusual short volume · KZR overview
| Date | Short | Total | Short % of volume |
|---|---|---|---|
| 2026-05-08 | 23,133 | 49,804 | 46.5% |
| 2026-05-07 | 9,076 | 66,928 | 13.6% |
| 2026-05-06 | 8,640 | 99,081 | 8.7% |
| 2026-05-05 | 5,941 | 23,397 | 25.4% |
| 2026-05-04 | 12,621 | 45,710 | 27.6% |
| 2026-05-01 | 4,015 | 20,466 | 19.6% |
| 2026-04-30 | 2,082 | 22,193 | 9.4% |
| 2026-04-29 | 5,433 | 22,860 | 23.8% |
| 2026-04-28 | 1,246 | 6,888 | 18.1% |
| 2026-04-27 | 3,129 | 14,081 | 22.2% |
KZR short interest FAQ
What share of KZR daily volume is sold short?
21.9% on average over the last 20 sessions to May 8, 2026 (FINRA Reg SHO daily short volume; the 8th percentile of its own 20-day averages). Short volume counts market makers' same-day short sales, so it is not short interest.
What was KZR's latest FINRA short volume?
On May 8, 2026, cached FINRA short volume for Kezar Life Sciences Inc (KZR) was 23,133 shares, 46.5% of 49,804 total volume.
How many KZR short-volume sessions are listed on this page?
This page lists 10 cached FINRA short-volume sessions for Kezar Life Sciences Inc (KZR), from Apr 27, 2026 through May 8, 2026.
How did KZR short volume percent change from the prior cached session?
Cached FINRA short volume for Kezar Life Sciences Inc (KZR) moved from 13.6% on May 7, 2026 to 46.5% on May 8, 2026, up 32.9 percentage points.
What was the highest KZR short volume percent on this page?
The highest cached FINRA short volume on this page is 46.5% of total volume on May 8, 2026.
Where is KZR listed?
Kezar Life Sciences Inc (KZR) common stock is listed on NASDAQ.
What is KZR's market cap?
Kezar Life Sciences Inc (KZR) market cap is $53.9M on the latest cached fundamentals snapshot.
What is the average KZR short volume percent on this page?
Across 10 cached sessions on this page, Kezar Life Sciences Inc (KZR) short volume averaged 21.5% of total volume.
Not investment advice. Figures as filed or reported, not a live feed.