CERS — CERUS CORP
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Others in Healthcare
Measured signals that fired on CERS
| date | signal | measured base rate |
|---|---|---|
| 2026-07-31 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-05-27 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-03-11 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-17 | Jensen Chrystal Chief Legal Officer | Open-market sale 10b5-1 plan | 30.0K | 2.98 | 89.5K |
| 2026-07-16 | Jayaraman Vivek K Chief Executive Officer | Open-market sale 10b5-1 plan | 16.7K | 3.16 | 52.7K |
| 2026-07-01 | Jayaraman Vivek K Chief Operating Officer | Grant or award 10b5-1 plan | 554.5K | 0.00 | 0 |
| 2026-06-30 | Greenman William Mariner President and CEO | Open-market sale 10b5-1 plan | 101.9K | 2.94 | 299.9K |
| 2026-06-30 | Jayaraman Vivek K Chief Operating Officer | Open-market sale 10b5-1 plan | 42.4K | 2.94 | 124.7K |
| 2026-06-30 | Green Kevin Dennis Chief Financial Officer | Open-market sale 10b5-1 plan | 33.7K | 2.94 | 99.1K |
| 2026-06-30 | Jensen Chrystal Chief Legal Officer | Open-market sale 10b5-1 plan | 24.3K | 2.94 | 71.6K |
| 2026-06-30 | Jensen Chrystal Chief Legal Officer | Grant or award 10b5-1 plan | 55.0K | 0.00 | 0 |
| 2026-06-30 | Jayaraman Vivek K Chief Operating Officer | Grant or award 10b5-1 plan | 80.0K | 0.00 | 0 |
| 2026-06-30 | Green Kevin Dennis Chief Financial Officer | Grant or award 10b5-1 plan | 63.6K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 39.3M | 21.6M |
| ARK Investment Management LLC | 34.9M | 19.2M |
| Soleus Capital Management, L.P. | 19.6M | 10.8M |
| BAKER BROS. ADVISORS LP | 18.2M | 10.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | 14.8M | 8.1M |
| WASATCH ADVISORS LP | 9.6M | 5.3M |
| GEODE CAPITAL MANAGEMENT, LLC | 8.4M | 4.6M |
| Sumitomo Mitsui Trust Group, Inc. | 8.2M | 4.5M |
| Amova Asset Management Americas, Inc. | 8.2M | 4.5M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 7.7M | 4.2M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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