Form 13-F position report

METSERA INC

Reported by DEERFIELD MANAGEMENT COMPANY L P SERIES C

MTSR CUSIP 59267L107 Manager CIK 0001009258

First reported at 500,000 shares this quarter.

New
% of reported 13F value 0.27% This manager · Q1 2025
Shares 500,000 Quarter-end amount reported
Reported value $13,610,000 Fair value at quarter end
Consecutive quarters held 1 Through Q1 2025

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2025-03-31 13610000
2025-06-30 0

Quarterly position history

How this manager's reported quarter-end position changed over time.

2 quarters
Quarterly reported position history for METSERA INC held by DEERFIELD MANAGEMENT COMPANY L P SERIES C.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q2 2025 Reduced 0 -500,000 (-100.0%) 0 $0 2025-08-14
Q1 2025 New 500,000 +500,000 (0.0%) 0.27% $13,610,000 2025-05-15

Who else reported the position

81 managers reported METSERA INC for Q1 2025.

Managers reporting METSERA INC in Q1 2025.
Manager Activity Shares Change % of reported 13F Reported value Tenure
FMR LLC New 15,167,808 +15,167,808 0.03% $412,867,734 1 qtr
Alphabet Inc New 4,961,744 +4,961,744 8.56% $135,058,672 1 qtr
MIC Capital Management UK LLP New 4,539,540 +4,539,540 25.18% $123,566,279 1 qtr
VR Adviser LLC New 3,750,662 +3,750,662 8.69% $102,093,020 1 qtr
JANUS HENDERSON GROUP PLC New 2,905,462 +2,905,462 0.04% $81,337,694 1 qtr
T Rowe Price Investment Management Inc New 2,893,009 +2,893,009 0.05% $78,748,000 1 qtr
WELLINGTON MANAGEMENT GROUP LLP New 2,401,991 +2,401,991 0.01% $65,382,195 1 qtr
Alpha Wave Global LP New 2,384,050 +2,384,050 28.91% $64,893,841 1 qtr
BlackRock Inc New 1,814,353 +1,814,353 < 0.01% $49,386,688 1 qtr
VIKING GLOBAL INVESTORS LP New 1,616,612 +1,616,612 0.14% $44,004,179 1 qtr
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
March 31, 2025
Filed
May 15, 2025
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
500,000
Shared
0
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.