MMSI Institutional Ownership
Top institutional (13F) holders of MMSI and 5%+ (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
47
Institutional value
$2.8B
Top holder
BlackRock, Inc.
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| BlackRock, Inc.holding company | 15.8% | Aug 7, 2026 | $656.27M |
| Vanguard Portfolio Managementinvestment advisor | 5.8% | Aug 13, 2026 | $240.88M |
| Vanguard Capital Managementinvestment advisor | 4.3% | Aug 13, 2026 | $179.62M |
| STATE STREET CORPORATIONholding company | 4.1% | Sep 22, 2026 | $171.6M |
| Dimensional Fund Advisors LPinvestment advisor | 2.8% | Nov 4, 2026 | $142.73M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 2.7% | Nov 6, 2026 | $139.43M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCinvestment advisor | 1.9% | Nov 6, 2026 | $96.54M |
| UBS Group AGbank | 2.3% | Aug 13, 2026 | $94.06M |
| FMR LLCinvestment advisor | 1.7% | Aug 13, 2026 | $70.23M |
| MORGAN STANLEYholding company | 1.7% | Aug 13, 2026 | $69.82M |
| Neuberger Berman Group LLCinvestment advisor | 1.7% | Oct 27, 2026 | $69.49M |
| MAVERICK CAPITAL LTDinvestment advisor | 1.6% | Aug 14, 2026 | $67.86M |
| T. Rowe Price Associates, Inc.investment advisor | 1.6% | Aug 14, 2026 | $66.48M |
| CITADEL ADVISORS LLCinvestment advisor | 1.5% | Sep 1, 2026 | $63.89M |
| ROYAL BANK OF CANADAholding company | 1.4% | Aug 14, 2026 | $57.34M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 1.2% | Aug 14, 2026 | $51.58M |
| Norges Bankother | 1.2% | Aug 12, 2026 | $49.31M |
| NORTHERN TRUST CORPinvestment advisor | 1.2% | Aug 13, 2026 | $49.18M |
| Massachusetts Financial Services Companyinvestment advisor | 1.1% | Aug 3, 2026 | $47.1M |
| JPMORGAN CHASE & COholding company | 1.1% | Aug 12, 2026 | $45.33M |
| BANK OF AMERICA CORP /DE/holding company | 0.9% | Aug 14, 2026 | $37.06M |
| WELLS FARGO & COMPANY/MNinvestment advisor | 0.9% | Aug 14, 2026 | $36.3M |
| GOLDMAN SACHS GROUP INCinvestment advisor | 0.8% | Aug 14, 2026 | $35.24M |
| Bank of New York Mellon Corpholding company | 0.7% | Nov 5, 2026 | $35.03M |
| AQR CAPITAL MANAGEMENT LLCinvestment advisor | 0.8% | Aug 14, 2026 | $32.19M |
5%+ holders
Current stakes of 5% or more from Schedule 13D and 13G filings. A joint filing shows once, under its lead filer.
| Holder | Form | Stake | Filed |
|---|---|---|---|
| BlackRock, Inc.holding company | SC 13G/A | 14.1% | Oct 17, 2025 |
| Vanguard Portfolio Managementinvestment advisor | SC 13G | 6.0% | Apr 29, 2026 |
| Vanguard Capital Managementinvestment advisor | SC 13G | 5.2% | Apr 30, 2026 |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.