Ranked by reported Q4 2025 13F market value
Share of total reported institutional value in MTSR held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | IFP Advisors, Inc | 8 | $564 | — | 0.000% | 0.00% |
| 2 | Scarborough Advisors, LLC | 10 | $523 | — | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MTSR — a direct measure of their conviction.
Filings activity in MTSR during Q4 2025, grouped by how each filer changed its position.
Institutions that opened a new MTSR position in Q4 2025
Institutions that fully closed their MTSR position in Q4 2025
4 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q4 2025 | 2 | 99% | 0.00% | 44.09 pp | $0M | 100% |
| Q3 2025 | 150 | +38% | 44.09% | +22.32 pp | $3.27B | +102% |
| Q2 2025 | 109 | +36% | 21.77% | +3.37 pp | $1.61B | +18% |
| Q1 2025 | 80 | — | 18.40% | — | $1.36B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MTSR stock.
Based on Q4 2025 13F filings, institutional ownership of Metsera, Inc. stands at 0.0%, held across 2 reporting institutions.
IFP Advisors, Inc is the largest reported institutional holder of MTSR, with approximately 8 shares worth $0.00B as of Q4 2025.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of MTSR.
Our composite Smart Money Score for MTSR is 0 out of 100 (Heavy Distribution). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
2 institutions opened new positions in MTSR during Q4 2025, while 150 fully exited. 0 added to existing positions and 0 trimmed.
MTSR institutional ownership fell by 44.09 percentage points quarter-over-quarter, with a net change of -148 holders.
The top 10 institutions account for 100.0% of all reported 13F value in MTSR, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Metsera, Inc. (MTSR) Institutional Ownership