SI — SHOULDER INNOVATIONS, INC.
Price · 2025-07-31 → 2026-08-21
267 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 2025-07-31.
Performance
Technicals
Others in Healthcare
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-18 | Ahearn Matthew Fraser Chief Operating Officer | Open-market sale 10b5-1 plan | 12.6K | 20.94 | 263.5K |
| 2026-08-18 | Ahearn Matthew Fraser Chief Operating Officer | Open-market sale 10b5-1 plan | 1.6K | 21.38 | 34.2K |
| 2026-08-17 | Ahearn Matthew Fraser Chief Operating Officer | Open-market sale 10b5-1 plan | 8.3K | 20.10 | 167.1K |
| 2026-08-14 | Ahearn Matthew Fraser Chief Operating Officer | Gift 10b5-1 plan | 2.5K | 0.00 | 0 |
| 2026-08-06 | Gilde Healthcare Holding B.V. 10% owner | Open-market sale | 2.1K | 22.60 | 47.3K |
| 2026-08-05 | Gilde Healthcare Holding B.V. 10% owner | Open-market sale | 7.3K | 22.64 | 166.1K |
| 2026-08-04 | Gilde Healthcare Holding B.V. 10% owner | Open-market sale | 99.8K | 22.77 | 2.3M |
| 2026-08-03 | Gilde Healthcare Holding B.V. 10% owner | Open-market sale | 10.8K | 22.71 | 244.2K |
| 2026-07-31 | Gilde Healthcare Holding B.V. 10% owner | Open-market sale | 20.0K | 22.73 | 455.4K |
| 2026-07-30 | Gilde Healthcare Holding B.V. 10% owner | Open-market sale | 28.2K | 23.36 | 659.8K |
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 | 55.0M | 3.8M |
| BlackRock, Inc. | 8.1M | 556.1K |
| SECTORAL ASSET MANAGEMENT INC | 6.3M | 430.4K |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.0M | 413.5K |
| TimesSquare Capital Management, LLC | 4.7M | 322.8K |
| Roubaix Capital, LLC | 3.7M | 257.1K |
| Alyeska Investment Group, L.P. | 3.4M | 233.0K |
| Sio Capital Management, LLC | 3.1M | 210.6K |
| MILLENNIUM MANAGEMENT LLC | 2.8M | 193.9K |
| GEODE CAPITAL MANAGEMENT, LLC | 2.7M | 183.7K |
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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