OM — Outset Medical, Inc.
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 2020-09-15.
Performance
Technicals
Others in Healthcare
Measured signals that fired on OM
| date | signal | measured base rate |
|---|---|---|
| 2026-08-18 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
| 2026-05-19 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
| 2026-03-06 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 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 | Gaeta Renee Chief Financial Officer | Open-market sale | 4.5K | 4.39 | 19.9K |
| 2026-08-17 | Trigg Leslie Chair and CEO | Open-market sale | 3.4K | 4.39 | 15.1K |
| 2026-08-17 | Brottem John L. General Counsel | Open-market sale | 2.6K | 4.39 | 11.6K |
| 2026-06-26 | Brottem John L. General Counsel | Grant or award | 59.8K | 0.00 | 0 |
| 2026-06-26 | Gaeta Renee Chief Financial Officer | Grant or award | 71.6K | 0.00 | 0 |
| 2026-06-26 | Trigg Leslie Chair and CEO | Grant or award | 99.2K | 0.00 | 0 |
| 2026-06-04 | HACKETT PATRICK T Director | Grant or award | 10.7K | 0.00 | 0 |
| 2026-06-04 | GROSSMAN D KEITH Director | Grant or award | 10.7K | 0.00 | 0 |
| 2026-06-04 | Drexler Karen Director | Grant or award | 10.7K | 0.00 | 0 |
| 2026-06-04 | LANG BRENT D. Director | Grant or award | 10.7K | 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 |
|---|---|---|
| FMR LLC | 10.5M | 2.7M |
| BML Capital Management, LLC | 7.3M | 1.9M |
| BlackRock, Inc. | 4.9M | 1.3M |
| BANK OF AMERICA CORP /DE/ | 3.6M | 949.4K |
| PERCEPTIVE ADVISORS LLC | 3.2M | 833.3K |
| AQR CAPITAL MANAGEMENT LLC | 3.1M | 808.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.9M | 763.8K |
| PFM Health Sciences, LP | 2.3M | 594.6K |
| Ensign Peak Advisors, Inc | 2.0M | 526.6K |
| Assenagon Asset Management S.A. | 1.9M | 504.1K |
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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