SHOULDER INNOVATIONS INC SI
COMMON STOCK · Common Stock · CUSIP 82537J108
- SectorHealth care
- IndustrySurgical & Medical Instruments & Apparatus
- HeadquartersGrand Rapids, MI
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($6.7k this quarter). Holder counts are more reliable. Shares outstanding: 20.8m as of 2026-07-30, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $20.42.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2025 | 42 |
| Q4 2025 | 50 |
| Q1 2026 | 58 |
| Q2 2026 | 73 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2025 | 25 | 20 |
| Q1 2026 | 36 | 16 |
| Q2 2026 | 54 | 20 |
Biggest buyers
| KCM Capital Inc | Added | +265.0k |
| Driehaus Capital Management LLC | New | +253.8k |
| Parkman Healthcare Partners LLC | New | +226.2k |
| HighTower Advisors, LLC | New | +102.6k |
| JANE STREET GROUP, LLC | New | +86.3k |
| BlackRock, Inc. | Added | +82.4k |
| Schonfeld Strategic Advisors LLC | New | +77.7k |
| Informed Momentum Co LLC | New | +58.0k |
| KING LUTHER CAPITAL MANAGEMENT CORP | New | +52.4k |
| CM Management, LLC | Added | +45.0k |
Biggest sellers
| Alyeska Investment Group, L.P. | Sold out | -233.0k |
| Sio Capital Management, LLC | Sold out | -210.6k |
| MILLENNIUM MANAGEMENT LLC | Sold out | -193.9k |
| FMR LLC | Reduced | -110.6k |
| MORGAN STANLEY | Reduced | -40.3k |
| ROYAL BANK OF CANADA | Reduced | -38.0k |
| TimesSquare Capital Management, LLC | Reduced | -24.5k |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | -21.3k |
| GOLDMAN SACHS GROUP INC | Sold out | -14.0k |
| JPMORGAN CHASE & CO | Reduced | -6.3k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution -1.3 pts · filed 2026-08-06 | 17.7% |
| Presidio Management Group XII, L.L.C. 13G · exempt (held before listing) new · filed 2025-11-14 | 13.3% |
| Gilde Healthcare Holding B.V. 13D · may seek influence -1.1 pts · filed 2026-08-07 | 10.7% |
| LSV Associates II, LLC 13G · exempt (held before listing) new · filed 2025-11-14 | 9.3% |
| Arboretum Ventures VI, L.P. 13G · passive investor new · filed 2025-08-08 | 5.8% |
Fell to 5% or below in the last year: cultivate(MD) Holdings, LLC (3.6%, 2026-05-07)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 6 | $6.3m | 0 | — | — |
| Q4 2025 | 2 | $136.6k | 0 | — | — |
| Q1 2026 | 3 | $78.2k | 0 | — | — |
| Q2 2026 | 0 | — | 1 | $374.3k | $374.3k |
| Q3 2026 | 0 | — | 2 | $652.6k | $464.9k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-14 | Ball Robert Joseph CEO & Executive Chairman, director | Sold | $187.7k10.2k shares |
| 2026-08-26 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $27.0k1.2k shares |
| 2026-08-24 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $15.4k681 shares |
| 2026-08-21 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $463.9k20.5k shares |
| 2026-08-20 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $88.1k3.9k shares |
| 2026-08-18 | Ahearn Matthew Fraser Chief Operating Officer, director | Sold plan | $297.8k14.2k shares |
| 2026-08-17 | Ahearn Matthew Fraser Chief Operating Officer, director | Sold plan | $167.1k8.3k shares |
| 2026-08-06 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $47.3k2.1k shares |
| 2026-08-05 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $166.1k7.3k shares |
| 2026-08-04 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $2.3m99.8k shares |
| 2026-08-03 | Gilde Healthcare Holding B.V. 10% owner · See footnote | Sold | $244.2k10.8k shares |
| 2026-07-31 | Gilde Healthcare Holding B.V. 10% owner · See Footnote | Sold | $455.4k20.0k shares |
| 2026-07-30 | Gilde Healthcare Holding B.V. 10% owner · See Footnote | Sold | $659.8k28.2k shares |
| 2026-06-15 | Ahearn Matthew Fraser Chief Operating Officer, director | Sold plan | $78.1k4.1k shares |
| 2026-06-12 | Ahearn Matthew Fraser Chief Operating Officer, director | Sold plan | $296.2k15.9k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.00% of their portfolio | 3.7m $74.5m | Reduced -110.6k |
| BlackRock, Inc. 0.00% of their portfolio | 638.4k $12.9m | Added +82.4k |
| SECTORAL ASSET MANAGEMENT INC 6.09% of their portfolio | 430.4k $8.7m | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 392.2k $8.0m | Reduced -21.3k |
| KCM Capital Inc 1.00% of their portfolio | 300.0k $6.1m | Added +265.0k |
| TimesSquare Capital Management, LLC 0.09% of their portfolio | 298.2k $6.0m | Reduced -24.5k |
| Roubaix Capital, LLC 1.86% of their portfolio | 255.3k $5.2m | Reduced -1.8k |
| Driehaus Capital Management LLC 0.03% of their portfolio | 253.8k $5.1m | New |
| Parkman Healthcare Partners LLC 0.47% of their portfolio | 226.2k $4.6m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 199.5k $4.0m | Added +15.8k |
| CM Management, LLC 1.87% of their portfolio | 145.0k $2.9m | Added +45.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 124.4k $2.6m | Reduced -6.3k |
| MORGAN STANLEY 0.00% of their portfolio | 117.3k $2.4m | Reduced -40.3k |
| STATE STREET CORP 0.00% of their portfolio | 114.9k $2.3m | Added +21.6k |
| HighTower Advisors, LLC 0.00% of their portfolio | 102.6k $2.1m | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 86.3k $1.8m | New |
| Walleye Capital LLC 0.01% of their portfolio | 86.2k $1.7m | Added +972 |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 77.7k $1.6m | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 71.3k $1.4m | Added +7.2k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 70.3k $1.4m | Added +9.3k |
| Informed Momentum Co LLC 0.10% of their portfolio | 58.0k $1.2m | New |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.00% of their portfolio | 52.4k $1.1m | New |
| Squarepoint Ops LLC 0.00% of their portfolio | 44.2k $895.5k | New |
| READYSTATE ASSET MANAGEMENT LP 0.03% of their portfolio | 39.4k $799.7k | Unchanged |
| MARSHALL WACE, LLP 0.00% of their portfolio | 38.7k $784.2k | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 37.8k $767.1k | Added +204 |
| Nuveen, LLC 0.00% of their portfolio | 37.1k $753.2k | Added +25.0k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 36.8k $746.2k | Added +23.3k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 34.4k $696.6k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 33.9k $688.1k | Added +6.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 25.6k $518.8k | Added +2.6k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 23.6k $479.2k | Added +6.3k |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 22.9k $464.8k | New |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 19.8k $401.0k | New |
| ARMSTRONG ADVISORY GROUP, INC 0.02% of their portfolio | 17.3k $350.6k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 15.9k $322.0k | Reduced -38.0k |
| Blue Trust, Inc. 0.00% of their portfolio | 15.7k $318.8k | Unchanged |
| Jump Financial, LLC 0.00% of their portfolio | 13.5k $274.2k | New |
| UBS Group AG 0.00% of their portfolio | 11.2k $227.4k | Added +6.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 11.0k $223.3k | Added +6.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 10.2k $207.3k | Added +8.0k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 9.7k $195.7k | Added +319 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 8.8k $179.5k | Added +5.0k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 6.1k $124.3k | Reduced -94 |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 5.8k $118.6k | New |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 5.0k $101.4k | Added +1.4k |
| CITIGROUP INC 0.00% of their portfolio | 4.9k $98.6k | Added +4.3k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 4.8k $98.2k | Reduced -26 |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 4.7k $107.5k | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 3.2k $65.8k | Added +2.8k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 2.8k $56.1k | Unchanged |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 2.5k $51.5k | Unchanged |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 1.8k $36.5k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 1.8k $35.9k | Reduced -415 |
| Integrated Wealth Concepts LLC 0.00% of their portfolio | 1.7k $34.6k | New |
| COMPASS FINANCIAL MANAGEMENT LLC 0.00% of their portfolio | 1.5k $29.9k | First filing |
| Legal & General Group Plc 0.00% of their portfolio | 1.1k $22.5k | Added +231 |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 954 $19.3k | Added +554 |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 892 $18.1k | Added +91 |
| Arax Advisory Partners 0.00% of their portfolio | 365 $7.4k | Added +359 |
| Sterling Capital Management LLC 0.00% of their portfolio | 202 $4.1k | Added +46 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 145 $2.9k | Reduced -429 |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 71 $1.4k | Added +69 |
| Allworth Financial LP 0.00% of their portfolio | 51 $1.0k | New |
| IFP Advisors, Inc 0.00% of their portfolio | 29 $588 | New |
| Essential Partners LLC 0.00% of their portfolio | 28 $568 | Added +26 |
| True Wealth Design, LLC 0.00% of their portfolio | 10 $203 | Added +9 |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 10 $203 | New |
| ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio | 8 $162 | New |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 6 $122 | New |
| SJS Investment Consulting Inc. 0.00% of their portfolio | 3 $61 | New |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 2 $41 | New |
| Clearstead Advisors, LLC 0.00% of their portfolio | 1 $21 | New |