Metsera, Inc. Common Stock

MTSR • NASDAQ

Metsera, Inc. Common Stock is a publicly traded company on NASDAQ, with a market cap of $7.4B. As of Q3 2025, 62% of shares are held by 151 institutional investors, with FMR LLC as the largest holder at 13.2%.

Market Cap$7.4B

Websitemetsera.com

Overview

Overview of institutional ownership in MTSR as of Q3 2025 with a market cap of $5.5B

All Institutions

Institutions: 151
Value Held: $3.4B
Shares Held: 64.8M
Avg Position: $22.4M
Median Position: $980.1K

Hedge Funds

Hedge Funds: 27
Value Held: $475.0M
Shares Held: 9.1M
Avg Position: $17.6M
Median Position: $4.0M

Ownership Breakdown

Institutional (non-HF)

52.89%

$2.9B

Hedge Funds

8.62%

$475.0M

Retail & Other

38.49%

$2.1B

Based on market cap of $5.5B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in MTSR as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
FMR LLC Institution	-	$727.0M 0.04% of portfolio	13.20% 13.9M shares	Q1 2025 Held for 8 months	$1.92T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$304.8M 0.00% of portfolio	5.53% 5.8M shares	Q1 2025 Held for 8 months	$6.69T
HENDERSON GROUP PLC Institution	Ali Dibadj CEO	$280.1M 0.13% of portfolio	5.08% 5.4M shares	Q1 2025 Held for 8 months	$218.74B
B BlackRock, Inc. Institution	-	$200.7M 0.00% of portfolio	3.64% 3.8M shares	Q1 2025 Held for 8 months	$5.67T
Alphabet Inc. Institution	Sundar Pichai CEO	$198.0M 8.22% of portfolio	3.59% 3.8M shares	Q1 2025 Held for 8 months	$2.4B
VR Adviser, LLC Venture Capital	Jessica Tong Baron CFO	$196.3M 11.05% of portfolio	3.56% 3.8M shares	Q1 2025 Held for 8 months	$1.8B
WELLINGTON MANAGEMENT CO LLP Long Only Manager	Edmund Wellington Iii President	$191.5M 0.03% of portfolio	3.48% 3.7M shares	Q1 2025 Held for 8 months	$571.21B
S SOFTBANK GROUP CORP Institution	-	$191.2M 0.74% of portfolio	3.47% 3.7M shares	Q2 2025 Held for 5 months	$25.9B
HBK INVESTMENTS L P Hedge Fund•Multi-Strategy	Matthew Atcheson Leffers President	$167.5M 2.78% of portfolio	3.04% 3.2M shares	Q3 2025 Held for 2 months	$6.0B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$131.4M 0.00% of portfolio	2.39% 2.5M shares	Q1 2025 Held for 8 months	$2.88T

Net Capital Flow

Institutional buying and selling activity for MTSR in Q3 2025

Net Flow: +$103.3M
Buyers: 48
Sellers: 43
Total Bought: +$776.0M
Total Sold: −$672.7M
Avg Position: $27.9M

Biggest Buyers

Institution	Net Bought	Current Position
VANGUARD GROUP INC Institution	+$226.8M +4.3M shares	$304.8M 5.8M shares
B BlackRock, Inc. Institution	+$136.0M +2.6M shares	$200.7M 3.8M shares
HENDERSON GROUP PLC Institution	+$102.8M +2.0M shares	$280.1M 5.4M shares
STATE STREET CORP Institution	+$100.0M +1.9M shares	$131.4M 2.5M shares
GEODE CAPITAL MANAGEMENT LLC ETF Provider	+$49.0M +936.0K shares	$73.4M 1.4M shares
BANK OF AMERICA CORP /DE/ Institution	+$21.2M +404.9K shares	$23.8M 455.6K shares
SCHWAB CHARLES INVESTMENT MANAGEMENT INC Long Only Manager	+$19.6M +375.1K shares	$26.8M 511.5K shares
JPMORGAN CHASE & CO Institution	+$16.2M +309.8K shares	$17.0M 325.2K shares
NORTHERN TRUST CORP Institution	+$15.8M +302.1K shares	$22.9M 437.8K shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	+$12.1M +232.0K shares	$191.5M 3.7M shares

Biggest Sellers

Institution	Net Sold	Current Position
M MIC Capital Management UK LLP Institution	−$129.1M −4.5M shares	Sold Off 0 shares
FMR LLC Institution	−$97.7M −1.9M shares	$727.0M 13.9M shares
ALLIANCEBERNSTEIN L.P. Long Only Manager	−$71.6M −1.4M shares	$2.8M 53.6K shares
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	−$68.8M −1.3M shares	$2.8M 54.3K shares
Alphabet Inc. Institution	−$61.7M −1.2M shares	$198.0M 3.8M shares
S SOFTBANK GROUP CORP Institution	−$61.0M −1.2M shares	$191.2M 3.7M shares
VIKING GLOBAL INVESTORS LP Hedge Fund•Long/Short	−$46.0M −1.6M shares	Sold Off 0 shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	−$35.5M −677.5K shares	$121.8M 2.3M shares
Deep Track Capital, LP Hedge Fund•Long/Short	−$31.1M −1.1M shares	Sold Off 0 shares
R ROYCE & ASSOCIATES LLC Institution	−$12.0M −229.0K shares	$5.4M 102.3K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited MTSR in Q3 2025

New Positions: 64
New Value: $295.2M
Exited Positions: 23
Exited Value: $247.6M

New Positions

Institution	Position Value
HBK INVESTMENTS L P Hedge Fund•Multi-Strategy	$167.5M 3.2M shares
Hudson Bay Capital Management LP Hedge Fund•Multi-Strategy	$16.9M 323.8K shares
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy	$14.2M 270.7K shares
Sontag Advisory, LLC RIA/Wealth	$11.2M 213.1K shares
ALPINE ASSOCIATES MANAGEMENT INC. Hedge Fund•Merger Arb	$10.2M 195.2K shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$9.3M 177.2K shares
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	$8.0M 152.5K shares
A Avidity Partners Management LP Hedge Fund•Long/Short	$7.4M 140.5K shares
M Man Group plc Institution	$7.3M 140.0K shares
Greenwich Wealth Management LLC RIA/Wealth	$4.9M 93.2K shares

Exited Positions

Institution	Previous Position
M MIC Capital Management UK LLP Institution	$129.1M 4.5M shares
VIKING GLOBAL INVESTORS LP Hedge Fund•Long/Short	$46.0M 1.6M shares
Deep Track Capital, LP Hedge Fund•Long/Short	$31.1M 1.1M shares
JENNISON ASSOCIATES LLC Long Only Manager	$8.9M 312.3K shares
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Long Only Manager	$7.2M 253.7K shares
SILVERARC CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	$5.9M 207.6K shares
Logos Global Management LP Hedge Fund•Long/Short	$5.7M 200.0K shares
A AXA Institution	$3.3M 114.4K shares
T TANG CAPITAL MANAGEMENT LLC Institution	$2.8M 100.0K shares
Ikarian Capital, LLC Hedge Fund•Event Driven	$2.2M 77.3K shares

Options Activity

Institutions with the largest Call and Put options positions in MTSR as of Q3 2025

Call Positions: 5
Call Value: $12.6M
Put Positions: 8
Put Value: $33.9M

Call Positions

Institution	Position Value
Ikarian Capital, LLC Hedge Fund•Event Driven	$4.5M 860.0 contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$3.1M 583.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$2.7M 513.0 contracts
BOOTHBAY FUND MANAGEMENT, LLC Fund of Funds	$1.6M 312.0 contracts
J JANE STREET GROUP, LLC Institution	$701.2K 134.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$19.8M 3.8K contracts
J JANE STREET GROUP, LLC Institution	$6.2M 1.2K contracts
Ikarian Capital, LLC Hedge Fund•Event Driven	$4.5M 860.0 contracts
BOOTHBAY FUND MANAGEMENT, LLC Fund of Funds	$1.9M 363.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$1.3M 241.0 contracts
C CSS LLC/IL Institution	$78.5K 15.0 contracts
Walleye Trading LLC RIA/Wealth	$62.8K 12.0 contracts
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy	$12.7K 2.4 contracts

Most Committed Institutions

Institutions with MTSR as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Falcon Edge Capital LP Hedge Fund•Multi-Strategy	Ryan Francis El Khoury Founder	12.64% $124.8M	2.26% 2.4M shares	Q1 2025 Held for 8 months	$987.3M
VR Adviser, LLC Venture Capital	Jessica Tong Baron CFO	11.05% $196.3M	3.56% 3.8M shares	Q1 2025 Held for 8 months	$1.8B
Alphabet Inc. Institution	Sundar Pichai CEO	8.22% $198.0M	3.59% 3.8M shares	Q1 2025 Held for 8 months	$2.4B
HBK INVESTMENTS L P Hedge Fund•Multi-Strategy	Matthew Atcheson Leffers President	2.78% $167.5M	3.04% 3.2M shares	Q3 2025 Held for 2 months	$6.0B
A Avidity Partners Management LP Hedge Fund•Long/Short	Michael David Gregory President	1.71% $7.4M	0.13% 140.5K shares	Q3 2025 Held for 2 months	$429.1M
C Cormorant Asset Management, LLC Hedge Fund•Long/Short	Bihua Chen CEO	1.63% $20.9M	0.38% 400.0K shares	Q1 2025 Held for 8 months	$1.3B
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	Daniel Pawel Schneeberger Managing Partner	0.80% $8.0M	0.14% 152.5K shares	Q3 2025 Held for 2 months	$993.7M
S SOFTBANK GROUP CORP Institution	-	0.74% $191.2M	3.47% 3.7M shares	Q2 2025 Held for 5 months	$25.9B
EcoR1 Capital, LLC Hedge Fund•Sector	Scott Eric Perlen CFO	0.68% $14.2M	0.26% 271.5K shares	Q1 2025 Held for 8 months	$2.1B
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy	Paul Jay Glazer CEO	0.64% $14.2M	0.26% 270.7K shares	Q3 2025 Held for 2 months	$2.2B

Hedge Fund Spotlight

Discover hedge funds investing in MTSR

HBK INVESTMENTS L P

Hedge Fund • Multi-Strategy

Portfolio ManagerMatthew Atcheson Leffers

Portfolio Value: $6.0B
Positions: 99
Last Reported: Q3 2025

Sector Allocation

Position in Metsera, Inc. Common Stock

Market Value: $167.5M
Shares Held: 3.2M
Portfolio Weight: 2.78%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 CyberArk Software CYBR	Software - Infrastructure Technology	$1.1B	18.82%
2 VRNA Verona Pharma VRNA	Unknown Unknown	$455.0M	7.54%
3 Chart Industries GTLS	Industrial - Machinery Industrials	$425.9M	7.06%

View full profile

Metsera, Inc. Common Stock

Overview

All Institutions

Hedge Funds

Ownership Breakdown

Biggest Investors

Net Capital Flow

Biggest Buyers

Biggest Sellers

Entry and Exit Activity

New Positions

Exited Positions

Options Activity

Call Positions

Put Positions

Most Committed Institutions

Hedge Fund Spotlight

Position in Metsera, Inc. Common Stock

Cookie Preferences