MetseraMTSR
13F holders, Q2 2025 (June 30)109holders +29
38new positions
10sold out
2famous investors
$28.45avg. 13F price*
At the end of Q2 2025, 109 institutions reported holding Metsera Inc. (MTSR) in their 13F filings, up 29 from Q1 2025. 38 opened new positions and 10 sold out. The largest holders were FMR LLC ($448.3M), Alphabet Inc. ($141.2M) and Softbank Group Corp. ($137.1M). 2 famous investors held it, including Andreas Halvorsen (0.1% of Viking Global Investors's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Metsera Inc.
- CUSIP
- 59267L107
- Latest filing quarter
- Q4 2025
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 38 | $172.1M |
| Exits | 10 | $61.7M |
All 13F filers, Q1 2025 → Q2 2025: 9,970,377 shares bought and 3,502,390 shares sold, net +6,467,987 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 109 holders
| FMR LLC | 0.03% | Add +3.9% | 15,758,330 | $448.3M |
| Alphabet Inc. | 6.61% | No change | 4,961,744 | $141.2M |
| Softbank Group Corp. | 0.55% | New | 4,819,884 | $137.1M |
| MIC Capital Management UK LLP | 25.36% | No change | 4,539,540 | $129.1M |
| Venrock Adviser, LLC | 8.00% | No change | 3,750,662 | $106.7M |
| Wellington Management Group LLP | 0.02% | Add +42.7% | 3,427,432 | $97.5M |
| Janus Henderson Group PLC | 0.05% | Add +16.6% | 3,387,963 | $96.4M |
| T. Rowe Price Investment Management, Inc. | 0.05% | Add +3.9% | 3,004,853 | $85.5M |
| Alpha Wave Global, LP | 7.31% | No change | 2,384,050 | $67.8M |
| Viking Global Investors | 0.13% | No change | 1,616,612 | $46.0M |
| Vanguard Group Inc. | 0.00% | Add +1.7% | 1,491,479 | $42.4M |
| Alliancebernstein L.P. | 0.01% | Add +18.2% | 1,421,359 | $40.4M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -12.1% | 1,368,573 | $38.9M |
| BlackRock, Inc. | 0.00% | Reduce -31.8% | 1,237,125 | $35.2M |
| Deep Track Capital, LP | 1.00% | No change | 1,094,408 | $31.1M |
| Ra Capital Management, L.P. | 0.32% | No change | 675,525 | $19.2M |
| State Street Corp. | 0.00% | Add +141.4% | 600,203 | $17.1M |
| Geode Capital Management, LLC | 0.00% | Add +7.4% | 466,955 | $13.3M |
| Woodline Partners LP | 0.06% | Add +33.5% | 400,785 | $11.4M |
| Cormorant Asset Management, LP | 0.85% | No change | 400,000 | $11.4M |
| Eventide Asset Management, LLC | 0.20% | Add +58.5% | 396,160 | $11.3M |
| Royce & Associates LP | 0.10% | New | 331,280 | $9.4M |
| Jennison Associates LLC | 0.01% | Reduce -12.2% | 312,290 | $8.9M |
| American Century Companies Inc. | 0.00% | Add +0.5% | 287,674 | $8.2M |
| EcoR1 Capital, LLC | 0.46% | Add +443.1% | 271,529 | $7.7M |
| Massachusetts Financial Services Co. | 0.00% | Reduce -47.3% | 253,712 | $7.2M |
| Citadel Advisors | 0.01% | Add +376.0% | 230,818 | $6.6M |
| Silverarc Capital Management, LLC | 1.21% | Add +84.1% | 207,581 | $5.9M |
| Logos Global Management LP | 0.76% | New | 200,000 | $5.7M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +8.9% | 136,406 | $3.9M |
| Northern Trust Corp. | 0.00% | Add +11.0% | 135,748 | $3.9M |
| AXA S.A. | 0.01% | New | 114,405 | $3.3M |
| Ensign Peak Advisors, Inc | 0.01% | New | 107,318 | $3.1M |
| Tang Capital Management LLC | 0.14% | New | 100,000 | $2.8M |
| Ikarian Capital, LLC | 0.73% | Reduce -48.5% | 77,316 | $2.2M |
| Morgan Stanley | 0.00% | Add +40.3% | 63,806 | $1.8M |
| Alps Advisors Inc. | 0.01% | New | 56,666 | $1.6M |
| Barclays PLC | 0.00% | Add +182.0% | 56,091 | $1.6M |
| Manufacturers Life Insurance Company, The | 0.00% | Add +577.4% | 55,232 | $1.6M |
| Alyeska Investment Group, L.P. | 0.01% | New | 55,000 | $1.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 53,085 | $1.5M |
| Bank of America Corp. | 0.00% | Add +377.8% | 50,677 | $1.4M |
| SG Americas Securities, LLC | 0.01% | Add +925.7% | 47,664 | $1.4M |
| UBS Group AG | 0.00% | Reduce -56.0% | 46,268 | $1.3M |
| Exchange Traded Concepts, LLC | 0.01% | New | 40,528 | $1.2M |
| Swiss National Bank | 0.00% | New | 40,100 | $1.1M |
| Bank of New York Mellon Corp | 0.00% | Add +21.6% | 39,521 | $1.1M |
| Goldman Sachs Group Inc. | 0.00% | Add +86.8% | 38,950 | $1.1M |
| Nuveen, LLC | 0.00% | Add +84.4% | 37,462 | $1.1M |
| TD Asset Management Inc | 0.00% | Reduce -52.1% | 36,832 | $1.0M |
| Sofinnova Investments, Inc. | 0.07% | Reduce -1.6% | 36,191 | $1.0M |
| Rhumbline Advisers | 0.00% | Add +33.9% | 25,580 | $728K |
| Schroder Investment Management Group | 0.00% | New | 25,578 | $728K |
| California State Teachers Retirement System | 0.00% | Add +2007.5% | 24,005 | $683K |
| Boothbay Fund Management, LLC | 0.02% | Reduce -51.5% | 23,347 | $664K |
| Legal & General Group Plc | 0.00% | Add +1416.4% | 23,246 | $661K |
| Susquehanna International Group, LLP | 0.00% | Add +11.4% | 21,288 | $606K |
| Rafferty Asset Management, LLC | 0.00% | New | 19,292 | $549K |
| Wells Fargo & Company | 0.00% | Add +107.9% | 17,032 | $485K |
| Prudential Financial Inc. | 0.00% | Add +7.8% | 16,070 | $457K |
| JPMorgan Chase & Co. | 0.00% | Add +111.5% | 15,425 | $439K |
| Intech Investment Management LLC | 0.00% | New | 14,060 | $400K |
| Corient Private Wealth LP | 0.00% | New | 13,114 | $373K |
| Invesco Ltd. | 0.00% | Add +20.1% | 11,974 | $341K |
| Deutsche Bank AG | 0.00% | Reduce -13.5% | 11,884 | $338K |
| Verition Fund Management LLC | 0.00% | New | 11,656 | $332K |
| Squarepoint Ops LLC | 0.00% | Add +46.7% | 11,497 | $327K |
| Citigroup Inc. | 0.00% | Add +0.9% | 10,954 | $312K |
| MetLife Investment Management, LLC | 0.00% | Add +16.2% | 10,854 | $309K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +16.9% | 10,665 | $304K |
| Atom Investors LP | 0.03% | New | 10,250 | $292K |
| Cantor Fitzgerald, L. P. | 0.01% | New | 10,200 | $290K |
| Bellevue Group AG | 0.00% | New | 7,800 | $222K |
| New York State Common Retirement Fund | 0.00% | Add +25.0% | 6,000 | $171K |
| Simplex Trading, LLC | 0.00% | New | 5,798 | $164K |
| Wexford Capital LP | 0.04% | New | 5,633 | $160K |
| KLP Kapitalforvaltning As | 0.00% | New | 4,300 | $122K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +32.6% | 4,293 | $122K |
| STRS Ohio | 0.00% | No change | 2,800 | $80K |
| Virtus Investment Advisers, LLC | 0.03% | New | 2,719 | $77K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +4.1% | 1,638 | $47K |
| BNP Paribas Financial Markets | 0.00% | Add +100.0% | 1,600 | $46K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,560 | $44K |
| Osaic Holdings, Inc. | 0.00% | Add +45.5% | 946 | $27K |
| Cwm, LLC | 0.00% | New | 593 | $17K |
| Amalgamated Bank | 0.00% | No change | 532 | $15K |
| Royal Bank of Canada | 0.00% | Add +439.4% | 383 | $11K |
| GAMMA Investing LLC | 0.00% | New | 381 | $11K |
| SBI Securities Co., Ltd. | 0.00% | Add +107.2% | 315 | $9K |
| Salem Investment Counselors Inc. | 0.00% | Add +25.0% | 250 | $7K |
| Sterling Capital Management LLC | 0.00% | Add +70.6% | 215 | $6K |
| PNC Financial Services Group, Inc. | 0.00% | Add +1017.6% | 190 | $5K |
| Raymond James Financial Inc. | 0.00% | New | 187 | $5K |
| Quarry LP | 0.00% | New | 158 | $4K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | New | 138 | $4K |
| Bell Investment Advisors, Inc | 0.00% | New | 135 | $4K |
| Versant Capital Management, Inc | 0.00% | New | 76 | $2K |
| Nisa Investment Advisors, LLC | 0.00% | Add +733.3% | 75 | $2K |
| EverSource Wealth Advisors, LLC | 0.00% | New | 51 | $1K |
| Arax Advisory Partners | 0.00% | Add +30.0% | 39 | $1K |
| True Wealth Design, LLC | 0.00% | New | 30 | $854 |
| Jones Financial Companies LLLP | 0.00% | No change | 25 | $715 |
| Parkside Financial Bank & Trust | 0.00% | New | 20 | $569 |
| Rothschild Investment LLC | 0.00% | New | 15 | $427 |
| IFP Advisors, Inc | 0.00% | New | 8 | $228 |
| Comerica Bank | 0.00% | New | 5 | $142 |
| Clearstead Advisors, LLC | 0.00% | New | 3 | $86 |
| Essential Partners LLC | 0.00% | — | 1 | $28 |
| Covestor Ltd | 0.00% | New | 6 | $0 |
"% of holder's portfolio" is MTSR's weight in each manager's 13F, not the share of Metsera Inc. the manager owns.