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Disclosery

MTSR METSERA INC

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COM (common)

109 managers (110 13F filers) reported a position in MTSR shares at 2025-06-30, 61,110,681 shares in all. 38 filers opened a position and 10 filers sold out during the quarter.

Managers
109
13F filers
110
New
38
Added
48
Reduced
10
Sold out
10
Shares held by filers
61,110,681

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
FMR LLCin group FMR LLC15,758,330$448M0.03%+590,52213F-HRTimelineGroup
Alphabet Inc.in group Alphabet Inc.4,961,744$141M6.61%013F-HRTimelineGroup
SOFTBANK GROUP CORP.in group SOFTBANK GROUP CORP.4,819,884$137M0.55%new13F-HRTimelineGroup
MIC Capital Management UK LLP4,539,540$129M25.36%013F-HRTimeline
Venrock Adviser, LLC3,750,662$107M8%013F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…3,427,432$97.5M0.02%+1,025,44113F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson3,387,963$96.4M0.05%+482,50113F-HRTimelineGroup
T. Rowe Price Investment Management, In…3,004,853$85.5M0.05%+111,84413F-HRTimeline
Alpha Wave Global, LP2,384,050$67.8M7.31%013F-HRTimeline
VIKING GLOBAL INVESTORS LPin group VIKING GLOBAL INVESTORS LP1,616,612$46M0.13%013F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,491,479$42.4M<0.01%+24,46813F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.1,421,359$40.4M0.01%+218,40713F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/1,368,573$38.9M<0.01%-188,91413F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.1,237,125$35.2M<0.01%-577,22813F-HRTimelineGroup
Deep Track Capital, LP1,094,408$31.1M1%013F-HRTimeline
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.675,525$19.2M0.32%013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP600,203$17.1M<0.01%+351,55513F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC466,955$13.3M<0.01%+32,30813F-HRTimelineGroup
Woodline Partners LP400,785$11.4M0.06%+100,56813F-HRTimeline
Cormorant Asset Management, LP400,000$11.4M0.85%013F-HRTimeline
EVENTIDE ASSET MANAGEMENT, LLC396,160$11.3M0.2%+146,16013F-HRTimeline
ROYCE & ASSOCIATES LP331,280$9.42M0.1%new13F-HRTimeline
JENNISON ASSOCIATES LLC312,290$8.88M0.01%-43,27713F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC287,674$8.18M<0.01%+1,46713F-HRTimelineGroup
EcoR1 Capital, LLC271,529$7.72M0.46%+221,52913F-HRTimeline
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…253,712$7.22M<0.01%-227,96713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC230,818$6.57M0.01%+182,32313F-HRTimelineGroup
SILVERARC CAPITAL MANAGEMENT, LLCin group SILVERARC CAPITAL MANAGEMENT,…207,581$5.91M1.21%+94,82213F-HRTimelineGroup
Logos Global Management LP200,000$5.69M0.76%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co136,406$3.88M<0.01%+11,12413F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP135,748$3.86M<0.01%+13,42913F-HRTimelineGroup
AXA S.A.in group AXA S.A.114,405$3.25M0.01%new13F-HRTimelineGroup
Ensign Peak Advisors, Inc107,318$3.05M0.01%new13F-HRTimeline
TANG CAPITAL MANAGEMENT LLCin group TANG CAPITAL MANAGEMENT LLC100,000$2.85M0.14%new13F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding99,353$2.83M-5,922Timeline
Ikarian Capital, LLCin group Ikarian Capital, LLC77,316$2.2M0.73%-72,68413F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY63,806$1.82M<0.01%+18,33813F-HRTimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC56,666$1.61M0.01%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC56,091$1.6M<0.01%+36,20313F-HR/ATimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …55,232$1.57M<0.01%+47,07813F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.55,000$1.56M0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/50,677$1.44M<0.01%+40,07113F-HRTimelineGroup
SG Americas Securities, LLC47,664$1.36M0.01%+43,01713F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC40,528$1.15M0.01%new13F-HRTimeline
Swiss National Bank40,100$1.14M<0.01%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp39,521$1.12M<0.01%+7,02713F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC38,950$1.11M<0.01%+18,09413F-HRTimelineGroup
Nuveen, LLCin group TIAA37,462$1.07M<0.01%+17,14513F-HRTimelineGroup
TD Asset Management Inc36,832$1.05M<0.01%-39,99213F-HRTimeline
Sofinnova Investments, Inc.36,191$1.03M0.07%-60913F-HRTimeline
RHUMBLINE ADVISERS25,580$728K<0.01%+6,47513F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP25,578$728K<0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…24,005$683K<0.01%+22,86613F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC23,347$664K0.02%-24,75813F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc23,246$661K<0.01%+21,71313F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…21,288$606K<0.01%+2,17613F-HRTimelineGroup
Rafferty Asset Management, LLC19,292$549K<0.01%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN17,032$485K<0.01%+8,83913F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC16,070$457K<0.01%+1,17013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO15,425$439K<0.01%+8,13013F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC14,060$400K<0.01%new13F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP13,114$373K<0.01%new13F-HR/ATimelineGroup
Invesco Ltd.in group Invesco Ltd.11,974$341K<0.01%+2,00013F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\11,884$338K<0.01%-1,85613F-HRTimelineGroup
Verition Fund Management LLC11,656$332K<0.01%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC11,497$327K<0.01%+3,66213F-HR/ATimelineGroup
CITIGROUP INCin group CITIGROUP INC10,954$312K<0.01%+10313F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…10,854$309K<0.01%+1,51213F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…10,665$304K<0.01%+1,53913F-HRTimelineGroup
Atom Investors LP10,250$292K0.03%new13F-HRTimeline
CANTOR FITZGERALD, L. P.in group CANTOR FITZGERALD, L. P.10,200$290K0.01%new13F-HRTimelineGroup
Bellevue Group AGin group Bellevue Group AG7,800$222K<0.01%new13F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND6,000$171K<0.01%+1,20013F-HR/ATimeline
SIMPLEX TRADING, LLC5,798$164K<0.01%new13F-HRTimeline
WEXFORD CAPITAL LP5,633$160K0.04%new13F-HRTimeline
KLP KAPITALFORVALTNING AS4,300$122K<0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…4,293$122K<0.01%+1,05613F-HRTimeline
STRS OHIO2,800$79.7K<0.01%013F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…2,719$77.4K0.03%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,638$46.6K<0.01%+6513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS1,600$45.5K<0.01%+80013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…1,560$44.4K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.946$26.9K<0.01%+29613F-HR/ATimelineGroup
CWM, LLCin group CWM, LLC593$17K<0.01%new13F-HRTimelineGroup
AMALGAMATED BANK532$15K<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA383$11K<0.01%+31213F-HR/ATimelineGroup
GAMMA Investing LLC381$10.8K<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.315$8.96K<0.01%+16313F-HRTimeline
SALEM INVESTMENT COUNSELORS INC250$7.11K<0.01%+5013F-HR/ATimeline
Sterling Capital Management LLC215$6.12K<0.01%+8913F-HR/ATimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…190$5.41K<0.01%+17313F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC187$5.32K<0.01%new13F-HRTimelineGroup
Quarry LP158$4.5K<0.01%new13F-HRTimeline
MassMutual Private Wealth & Trust, FSB138$3.93K<0.01%new13F-HRTimeline
Bell Investment Advisors, Inc135$3.84K<0.01%new13F-HRTimeline
Versant Capital Management, Inc76$2.16K<0.01%new13F-HRTimeline
NISA INVESTMENT ADVISORS, LLC75$2.13K<0.01%+6613F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…51$1.45K<0.01%new13F-HRTimelineGroup
Arax Advisory Partners39$1.11K<0.01%+913F-HRTimeline
True Wealth Design, LLC30$854<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP25$715<0.01%013F-HRTimelineGroup
Parkside Financial Bank & Trust20$569<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC15$427<0.01%new13F-HRTimeline
IFP Advisors, Inc8$228<0.01%new13F-HRTimeline
COMERICA BANK5$142<0.01%new13F-HRTimeline
Clearstead Advisors, LLC3$86<0.01%new13F-HRTimeline
Essential Partners LLC1$28<0.01%13F-HRTimeline
Covestor Ltd6$00%new13F-HRTimelineValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.