Shoulder Innovations
SI · NYSE
$18.72+$0.47 (+2.58%)TodayMarket closed ·
Prev close $18.25
Who owns SI
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 65.5% of SI’s shares.
- Fidelity Management & Research Company LLC17.6%
- U.S. Venture Partners13.0%
- Gilde Healthcare Partners B.V.10.5%
- Lightstone Ventures, L.P.9.1%
- Next 6 largest institutions15.3%
- All other shareholders34.5%
| Holder | Shares | % of shares |
|---|---|---|
| Fidelity Management & Research Company LLC | 3.65M | 17.60% |
| U.S. Venture Partners | 2.69M | 12.99% |
| Gilde Healthcare Partners B.V. | 2.19M | 10.54% |
| Lightstone Ventures, L.P. | 1.89M | 9.09% |
| Arboretum Ventures, Inc. | 1.16M | 5.61% |
| BlackRock Institutional Trust Company, N.A. | 585.30K | 2.82% |
| Sectoral Asset Management Inc. | 430.41K | 2.08% |
| Vanguard Capital Management, LLC | 392.18K | 1.89% |
| Ball (Robert Joseph) | 300.02K | 1.45% |
| KCM Capital Inc | 300.00K | 1.45% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Fidelity Select Medical Technology and Devices Portfolio | 947.76K | 4.57% |
| Fidelity Small Cap Growth Fund | 777.62K | 3.75% |
| Fidelity Select Health Care Portfolio | 545.29K | 2.63% |
| Fidelity Balanced Fund | 463.38K | 2.23% |
| Fidelity Small Cap Growth K6 Fund | 387.90K | 1.87% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $5.47M (17 trades) of SI on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Sidow Kevin K. | Award | 892 | $17.48K |
| Hykes Andrew | Award | 669 | $13.11K |
| Tansey Casey M | Award | 733 | $14.37K |
| BUCKMAN PAUL | Award | 1.27K | $24.99K |
| Ball Robert Joseph | Option exercise | 89.23K | — |
| Ball Robert Joseph | Sale | 10.18K | $187.71K |
| Ball Robert Joseph | Option exercise | 89.23K | $187.28K |
| Gilde Healthcare Holding B.V. | Sale | 1.20K | $27.03K |
| Gilde Healthcare Holding B.V. | Sale | 681 | $15.40K |
| Gilde Healthcare Holding B.V. | Sale | 20.52K | $463.87K |
Short interest
Settled Sep 30, 2026
- Shares short
- 630.24K
- Days to cover
- 3.86
- % of shares outstanding
- 3.04%
- Average daily volume
- 163.23K
- Change since last report
- +50.1%
Information on this page is provided for informational purposes only and is not a recommendation to buy, sell or hold any security. Investing involves risk, including possible loss of principal. Market data is delayed at least 15 minutes and is provided without warranty. Analyst ratings, price targets and company data come from third-party sources. Past performance does not guarantee future results.