OBIO — Orchestra BioMed Holdings, 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 2020-08-04.
Performance
Technicals
Others in Healthcare
Measured signals that fired on OBIO
| date | signal | measured base rate |
|---|---|---|
| 2026-07-07 | 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 |
|---|---|---|---|---|---|
| 2026-08-12 | Fain Eric S Director | Shares withheld for tax | 5.1K | 4.42 | 22.7K |
| 2026-08-12 | Mack John Prosper Director | Shares withheld for tax | 4.9K | 4.42 | 21.6K |
| 2026-08-12 | Cleary Chris Director | Shares withheld for tax | 4.2K | 4.42 | 18.7K |
| 2026-08-12 | Pacitti David Director | Shares withheld for tax | 3.8K | 4.42 | 16.6K |
| 2026-08-03 | Sherman Darren See Remarks | Open-market sale 10b5-1 plan | 15.0K | 4.09 | 61.4K |
| 2026-07-01 | Sherman Darren See Remarks | Open-market sale 10b5-1 plan | 15.0K | 4.27 | 64.0K |
| 2026-06-24 | Fain Eric S Director | Shares withheld for tax | 4.3K | 0.00 | 0 |
| 2026-06-24 | Cleary Chris Director | Shares withheld for tax | 3.5K | 0.00 | 0 |
| 2026-06-24 | Mack John Prosper Director | Shares withheld for tax | 3.5K | 0.00 | 0 |
| 2026-06-24 | Pacitti David Director | Shares withheld for tax | 3.8K | 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 |
|---|---|---|
| RTW INVESTMENTS, LP | 35.3M | 8.3M |
| PERCEPTIVE ADVISORS LLC | 21.4M | 5.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | 9.4M | 2.2M |
| Alyeska Investment Group, L.P. | 4.2M | 1.0M |
| Propel Bio Management, LLC | 3.8M | 896.7K |
| MILLENNIUM MANAGEMENT LLC | 3.0M | 702.5K |
| BlackRock, Inc. | 2.7M | 635.7K |
| GEODE CAPITAL MANAGEMENT, LLC | 2.1M | 485.5K |
| Affinity Asset Advisors, LLC | 1.7M | 402.6K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1M | 265.5K |
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 →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-14 | 2026-08-12 | on EDGAR ↗ |
| 4 | 2026-08-14 | 2026-08-12 | on EDGAR ↗ |
| 4 | 2026-08-14 | 2026-08-12 | on EDGAR ↗ |
| 4 | 2026-08-14 | 2026-08-12 | on EDGAR ↗ |
| 10-Q | 2026-08-10 | 2026-06-30 | on EDGAR ↗ |
| 4 | 2026-08-04 | 2026-08-03 | on EDGAR ↗ |
| 144 | 2026-08-03 | — | on EDGAR ↗ |
| 4 | 2026-07-02 | 2026-07-01 | on EDGAR ↗ |
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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