Form 13-F position report

METSERA INC

Reported by DEERFIELD MANAGEMENT COMPANY L P SERIES C

Manager portfolio Source filing
MTSR CUSIP 59267L107 Manager CIK 0001009258
Latest reported change

Reported 0 shares, down 500,000 (100.0%) from the prior quarter.

Reported value -100.0%; share count -100.0% vs. the prior quarter.

Reduced
% of reported 13F value 0 This manager · Q2 2025
Shares 0 Quarter-end amount reported
Reported value $0 Fair value at quarter end
Consecutive quarters held 2 Through Q2 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.

Manager history

Quarterly position history

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

2 quarters
Quarter Activity Shares Change % of reported 13F Reported value Filed
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
Institutional context

Who else reported the position

120 managers reported METSERA INC for Q2 2025.

Manager Activity Shares Change % of reported 13F Reported value Tenure
FMR LLC Added 15,758,330 +590,522 0.03% $448,324,489 2 qtrs
Alphabet Inc Unchanged 4,961,744 0 6.61% $141,161,617 2 qtrs
SOFTBANK GROUP CORP New 4,819,884 +4,819,884 0.55% $137,125,700 1 qtr
MIC Capital Management UK LLP Unchanged 4,539,540 0 25.36% $129,149,913 2 qtrs
VR Adviser LLC Unchanged 3,750,662 0 8.0% $106,706,334 2 qtrs
WELLINGTON MANAGEMENT GROUP LLP Added 3,427,432 +1,025,441 0.02% $97,510,440 2 qtrs
JANUS HENDERSON GROUP PLC Added 3,387,963 +482,501 0.05% $96,399,749 2 qtrs
T Rowe Price Investment Management Inc Added 3,004,853 +111,844 0.05% $85,489,000 2 qtrs
Alpha Wave Global LP Unchanged 2,384,050 0 7.31% $67,826,223 2 qtrs
VIKING GLOBAL INVESTORS LP Unchanged 1,616,612 0 0.13% $45,992,611 2 qtrs
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Filing details and methodology As reported
Report period
June 30, 2025
Filed
August 14, 2025
Filing type
13F-HR
Position type
COM

Voting authority reported

No voting-authority amounts were reported for this position. Voting authority is not required for reported call options.

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.