Metsera Inc
MTSR
MTSR was delisted on the 13th of November, 2025.
155 hedge funds and large institutions have $3.39B invested in Metsera Inc in 2025 Q3 according to their latest regulatory filings, with 69 funds opening new positions, 45 increasing their positions, 20 reducing their positions, and 23 closing their positions.
200% more first-time investments, than exits
New positions opened: 69 | Existing positions closed: 23
125% more repeat investments, than reductions
Existing positions increased: 45 | Existing positions reduced: 20
95% more capital invested
Capital invested by funds: $1.74B → $3.39B (+$1.65B)
42% more funds holding
Funds holding: 109 → 155 (+46)
3.47% more ownership
Funds ownership: 58.17% → 61.64% (+3.5%)
25% less funds holding in top 10
Funds holding in top 10: 4 → 3 (-1)
63% less call options, than puts
Call options by funds: $14.1M | Put options by funds: $37.6M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
+$160M |
| 2 |
HI
HBK Investments
Dallas,
Texas
|
+$118M |
| 3 |
BlackRock
New York
|
+$95.9M |
| 4 |
Janus Henderson Group
London,
|
+$72.5M |
| 5 |
State Street
Boston,
Massachusetts
|
+$70.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
MCMU
MIC Capital Management (UK)
London,
United Kingdom
|
-$129M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$68.9M |
| 3 |
AllianceBernstein
Nashville,
Tennessee
|
-$50.5M |
| 4 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$48.5M |
| 5 |
Viking Global Investors
Stamford,
Connecticut
|
-$46M |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
QL
176
Quarry LP
New York
| – | -$4.5K | -158 | Closed |
|
177
Comerica Bank
Dallas,
Texas
| – | -$142 | -5 | Closed |
|
MTSR Hedge Fund Activity: Q3 2025 in Review
155 of the 7,631 institutional investors tracked by Wall St. Rank reported a position in Metsera Inc (MTSR) for Q3 2025, worth a combined $3.39B — up 95% from $1.74B a quarter earlier.
Buyers outnumbered sellers: 69 funds opened new MTSR positions and 23 closed out — a net gain of 46 holders — while 45 added to existing stakes and 20 trimmed.
The largest buyer was Vanguard Group, adding an estimated $160M. The largest seller was MIC Capital Management (UK), exiting entirely with an estimated $129M sold.
- 155 institutional investors held Metsera Inc (MTSR) as of Q3 2025, up from 109 in Q2 2025.
- Funds reported $3.39B of Metsera Inc stock for Q3 2025, up 95% quarter-over-quarter.
- 69 funds opened new Metsera Inc positions in Q3 2025 and 23 closed out, a net change of +46 holders.
- The largest Metsera Inc buyer in Q3 2025 was Vanguard Group, an estimated $160M added.
- The largest Metsera Inc seller in Q3 2025 was MIC Capital Management (UK), an estimated $129M sold.
Based on aggregated 13F filings for Q3 2025.