CERS short interest
Cerus Corporation · Healthcare · Medical - Devices · settlement date 2026-09-30
| Shares short | 17,580,423 |
|---|---|
| Change vs prior report | -414,398 (-2.3%) |
| Change over six months | +58.1% |
| Days to cover | 8.03 (sector: 3.78) |
| Average daily volume | 2,188,865 |
| Rank in Healthcare | #198 of 922 by days to cover |
CERS short interest, last 12 months
| Settlement | Shares short | Change | Days to cover | Avg daily volume |
|---|---|---|---|---|
| 2026-09-30 | 17,580,423 | -2.3% | 8.03 | 2,188,865 |
| 2026-09-15 | 17,994,821 | +1.6% | 16.58 | 1,085,581 |
| 2026-08-31 | 17,717,716 | +2.2% | 10.02 | 1,769,079 |
| 2026-08-14 | 17,330,786 | +15.8% | 5.07 | 3,417,338 |
| 2026-07-31 | 14,960,162 | +9.3% | 5.71 | 2,619,098 |
| 2026-07-15 | 13,688,689 | +7.5% | 5.50 | 2,487,355 |
| 2026-06-30 | 12,738,396 | -35.3% | 4.14 | 3,078,951 |
| 2026-06-15 | 19,696,885 | +82.9% | 8.49 | 2,320,242 |
| 2026-05-29 | 10,766,701 | -41.9% | 4.24 | 2,541,848 |
| 2026-05-15 | 18,522,745 | +64.3% | 4.00 | 4,628,884 |
| 2026-04-30 | 11,273,044 | +0.6% | 10.51 | 1,073,047 |
| 2026-04-15 | 11,204,876 | +0.8% | 12.45 | 899,630 |
| 2026-03-31 | 11,119,137 | +5.8% | 6.30 | 1,764,992 |
| 2026-03-13 | 10,511,205 | +35.1% | 3.61 | 2,914,492 |
| 2026-02-27 | 7,781,596 | -0.5% | 5.69 | 1,368,390 |
| 2026-02-13 | 7,818,308 | +16.3% | 8.01 | 976,624 |
| 2026-01-30 | 6,725,116 | -5.9% | 5.93 | 1,133,279 |
| 2026-01-15 | 7,143,959 | +6.4% | 3.62 | 1,972,016 |
| 2025-12-31 | 6,714,909 | +7.6% | 4.85 | 1,383,526 |
| 2025-12-15 | 6,239,300 | +6.9% | 3.60 | 1,732,942 |
| 2025-11-28 | 5,838,160 | +2.0% | 4.46 | 1,309,915 |
| 2025-11-14 | 5,720,796 | +9.6% | 4.11 | 1,393,250 |
| 2025-10-31 | 5,222,244 | +1.0% | 4.72 | 1,105,655 |
| 2025-10-15 | 5,172,543 | -16.5% | 3.90 | 1,325,656 |
| 2025-09-30 | 6,191,774 | -43.8% | 3.37 | 1,836,304 |
import finzdata as yf
yf.Ticker("CERS").short_interest # every report since 2017
yf.Client().short_interest(["CERS"], start="2018-01-01")Healthcare short interest · CERS price history · Who owns CERS · All short interest