Who owns Shoulder Innovations (SI)
Which tracked institutional funds hold SI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SI company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on SI is one-sided between 2026-Q1 and 2026-Q2: 25 added or opened and 4 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SI’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 71 tracked filers holding SI, 54 increased or opened the position and 20 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SI between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 8
- Driehaus Capital Management LLC$5M
- Parkman Healthcare Partners LLC$5M
- JANE STREET GROUP, LLC$2M
- Schonfeld Strategic Advisors LLC$2M
- Informed Momentum Co LLC$1M
- Squarepoint Ops LLC$896K
Full exits 3
- Alyeska Investment Group, L.P.$3M
- Sio Capital Management, LLC$3M
- MILLENNIUM MANAGEMENT LLC$3M
Largest adds
- FMR LLC$21M
- KCM Capital Inc$6M
- BlackRock, Inc.$5M
- SECTORAL ASSET MANAGEMENT INC$2M
- VANGUARD CAPITAL MANAGEMENT LLC$2M
- CM Management, LLC$1M
Largest trims
- ROYAL BANK OF CANADA$461K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 3,673,960 | $75M | 39.8% | 2026-Q2 |
| BlackRock, Inc. added | 638,420 | $13M | 6.9% | 2026-Q2 |
| SECTORAL ASSET MANAGEMENT INC | 430,407 | $9M | 4.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 392,181 | $8M | 4.3% | 2026-Q2 |
| KCM Capital Inc added | 300,000 | $6M | 3.3% | 2026-Q2 |
| TimesSquare Capital Management, LLC trimmed | 298,219 | $6M | 3.2% | 2026-Q2 |
| Roubaix Capital, LLC trimmed | 255,288 | $5M | 2.8% | 2026-Q2 |
| Driehaus Capital Management LLC new | 253,760 | $5M | 2.8% | 2026-Q2 |
| Parkman Healthcare Partners LLC new | 226,212 | $5M | 2.5% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 199,529 | $4M | 2.2% | 2026-Q2 |
| CM Management, LLC added | 145,000 | $3M | 1.6% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 124,437 | $3M | 1.4% | 2026-Q2 |
| MORGAN STANLEY trimmed | 117,265 | $2M | 1.3% | 2026-Q2 |
| STATE STREET CORP added | 114,859 | $2M | 1.2% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 86,307 | $2M | 0.9% | 2026-Q2 |
| Walleye Capital LLC added | 86,155 | $2M | 0.9% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC new | 77,737 | $2M | 0.8% | 2026-Q2 |
| NORTHERN TRUST CORP added | 71,291 | $1M | 0.8% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 70,335 | $1M | 0.8% | 2026-Q2 |
| Informed Momentum Co LLC new | 57,998 | $1M | 0.6% | 2026-Q2 |
| Squarepoint Ops LLC new | 44,159 | $896K | 0.5% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP | 39,431 | $800K | 0.4% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 38,667 | $784K | 0.4% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 37,826 | $767K | 0.4% | 2026-Q2 |
| Nuveen, LLC added | 37,142 | $753K | 0.4% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 36,795 | $746K | 0.4% | 2026-Q2 |
| SEI INVESTMENTS CO new | 34,350 | $697K | 0.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 33,929 | $688K | 0.4% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 25,582 | $519K | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp added | 23,628 | $479K | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. new | 22,920 | $465K | 0.2% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC new | 19,775 | $401K | 0.2% | 2026-Q2 |
| ARMSTRONG ADVISORY GROUP, INC new | 17,290 | $351K | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 15,901 | $322K | 0.2% | 2026-Q2 |
| Blue Trust, Inc. | 15,719 | $319K | 0.2% | 2026-Q2 |
| Jump Financial, LLC new | 13,520 | $274K | 0.1% | 2026-Q2 |
| UBS Group AG added | 11,212 | $227K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 11,013 | $223K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 10,224 | $207K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 9,650 | $196K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 8,849 | $179K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC trimmed | 6,130 | $124K | 0.1% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC new | 5,847 | $119K | 0.1% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP | 4,716 | $107K | 0.1% | 2026-Q2 |
| China Universal Asset Management Co., Ltd. added | 5,000 | $101K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 4,860 | $99K | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 4,842 | $98K | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 3,243 | $66K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 2,766 | $56K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey | 2,540 | $52K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND | 1,800 | $37K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 1,770 | $36K | 0.0% | 2026-Q2 |
| Integrated Wealth Concepts LLC new | 1,704 | $35K | 0.0% | 2026-Q2 |
| COMPASS FINANCIAL MANAGEMENT LLC new | 1,472 | $30K | 0.0% | 2026-Q2 |
| Legal & General Group Plc added | 1,111 | $23K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. added | 954 | $19K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 892 | $18K | 0.0% | 2026-Q2 |
| Arax Advisory Partners added | 365 | $7K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC added | 202 | $4K | 0.0% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 145 | $3K | 0.0% | 2026-Q2 |
| EverSource Wealth Advisors, LLC trimmed | 71 | $1K | 0.0% | 2026-Q2 |
| Allworth Financial LP new | 51 | $1K | 0.0% | 2026-Q2 |
| IFP Advisors, Inc added | 29 | $588 | 0.0% | 2026-Q2 |
| Essential Partners LLC added | 28 | $568 | 0.0% | 2026-Q2 |
| Farther Finance Advisors, LLC new | 10 | $203 | 0.0% | 2026-Q2 |
| True Wealth Design, LLC added | 10 | $203 | 0.0% | 2026-Q2 |
| ROTHSCHILD INVESTMENT LLC new | 8 | $162 | 0.0% | 2026-Q2 |
| PNC Financial Services Group, Inc. new | 6 | $122 | 0.0% | 2026-Q2 |
| SJS Investment Consulting Inc. new | 3 | $61 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd new | 2 | $41 | 0.0% | 2026-Q2 |
| Clearstead Advisors, LLC new | 1 | $21 | 0.0% | 2026-Q2 |
| Alyeska Investment Group, L.P. | 232,984 | $3M | 1.8% | 2026-Q1 stale (1 quarter behind) |
| Sio Capital Management, LLC trimmed | 210,641 | $3M | 1.6% | 2026-Q1 stale (1 quarter behind) |
| MILLENNIUM MANAGEMENT LLC added | 193,942 | $3M | 1.5% | 2026-Q1 stale (1 quarter behind) |
| GOLDMAN SACHS GROUP INC new | 14,016 | $204K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| OSAIC HOLDINGS, INC. | 1,475 | $21K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Steward Partners Investment Advisory, LLC | 1,000 | $15K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| CWM, LLC added | 201 | $3K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| NATIONAL BANK OF CANADA /FI/ | 27 | $392 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Root Financial Partners, LLC new | 7 | $102 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| MAI Capital Management new | 4 | $59 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 220,430 | $3M | 1.7% | 2025-Q4 stale (2 quarters behind) |
| FEDERATED HERMES, INC. trimmed | 87,726 | $1M | 0.7% | 2025-Q4 stale (2 quarters behind) |
| GSA CAPITAL PARTNERS LLP new | 22,750 | $325K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| Board of Trustees of The Leland Stanford Junior University | 13,521 | $193K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| RENAISSANCE TECHNOLOGIES LLC new | 12,300 | $176K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| AMALGAMATED BANK trimmed | 150 | $2K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| DEERFIELD MANAGEMENT COMPANY, L.P. new | 482,572 | $6M | 3.2% | 2025-Q3 stale (3 quarters behind) |
| Monashee Investment Management LLC new | 40,000 | $502K | 0.3% | 2025-Q3 stale (3 quarters behind) |
| STRS OHIO new | 900 | $11K | 0.0% | 2025-Q3 stale (3 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.