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Disclosery

MREO MEREO BIOPHARMA GROUP PLC

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CMN (ADR), issuer CIK 1719714

89 managers (91 13F filers) reported a position in MREO shares at 2025-03-31, 111,100,472 shares in all. 13 filers opened a position and 14 filers sold out during the quarter.

Managers
89
13F filers
91
New
13
Added
27
Reduced
21
Sold out
14
Shares held by filers
111,100,472

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, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, 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
JANUS HENDERSON GROUP PLCin group Janus Henderson22,735,121$52.4M0.03%+5,612,55813F-HRTimelineGroup
Rubric Capital Management LP15,307,347$34.4M0.62%013F-HRTimeline
MANGROVE PARTNERS IM, LLC8,636,485$19.4M2.17%013F-HRTimeline
Frazier Life Sciences Management, L.P.7,819,863$17.6M0.8%+2,722,08413F-HRTimeline
DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,…6,710,429$15.1M0.3%013F-HRTimelineGroup
Rock Springs Capital Management LP6,684,247$15M0.86%-2,914,92313F-HRTimeline
ALKEON CAPITAL MANAGEMENT LLC4,698,100$10.6M0.06%013F-HRTimeline
683 Capital Management, LLCin group 683 Capital Management, LLC4,635,000$10.4M1.06%+85,00013F-HRTimelineGroup
Clearline Capital LP3,217,894$7.24M0.73%013F-HRTimeline
Tejara Capital Ltd2,521,324$5.67M2.8%+204,23913F-HRTimeline
UBS Group AGgroup of 2 filers holding2,501,121$5.63M-1,111,919Timeline
Aberdeen Group plcin group Aberdeen Group plc2,188,354$4.92M0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY2,179,642$4.9M<0.01%-1,374,59213F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,125,920$4.78M<0.01%+6,06813F-HR/ATimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…1,700,756$3.83M0.01%-7,014,25713F-HRTimelineGroup
Schonfeld Strategic Advisors LLC1,591,056$3.58M0.02%+1,097,15613F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC1,350,471$3.04M<0.01%+161,00013F-HRTimeline
GREAT POINT PARTNERS LLC1,275,000$2.87M1.56%+125,00013F-HRTimeline
Woodline Partners LP947,986$2.13M0.01%+329,20213F-HRTimeline
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC876,961$1.97M0.07%-208,55113F-HR/ATimelineGroup
Integral Health Asset Management, LLC800,000$1.8M0.2%-200,00013F-HRTimeline
ACUTA CAPITAL PARTNERS, LLC791,815$1.78M2.07%+12,50713F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP767,744$1.73M<0.01%-98,57313F-HRTimelineGroup
FMR LLCin group FMR LLC759,100$1.71M<0.01%new13F-HRTimelineGroup
Soleus Capital Management, L.P.686,953$1.55M0.12%-100,00013F-HRTimeline
NEOS Investment Management LLC654,666$1.47M0.03%-169,93713F-HRTimeline
Tema ETFs LLC654,666$1.47M0.44%-235,88213F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…450,000$1.01M0.01%+135,00013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/438,670$987K<0.01%+436,35013F-HRTimelineGroup
Artia Global Partners LP421,359$948K0.28%013F-HRTimeline
Monaco Asset Management SAM416,468$937K0.47%+35,00013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC394,431$887K<0.01%-3,571,00113F-HRTimelineGroup
Atle Fund Management AB390,000$878K0.39%013F-HRTimeline
CANTOR FITZGERALD, L. P.in group CANTOR FITZGERALD, L. P.355,000$799K0.03%+130,00013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC343,653$773K<0.01%+29,70313F-HRTimelineGroup
Knott David M Jr319,337$719K0.34%-11,66313F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding274,506$618K+205,771Timeline
BlackRock, Inc.in group BlackRock, Inc.274,361$617K<0.01%+1,34213F-HRTimelineGroup
Knoll Capital Management, LLC260,470$586K0.38%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…174,378$392K<0.01%-217,21213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC144,803$326K<0.01%+24,52513F-HR/ATimelineGroup
Persistent Asset Partners Ltd113,247$255K0.22%new13F-HRTimeline
Caption Management, LLC104,783$236K0.01%new13F-HRTimeline
BIT Capital GmbH101,070$227K0.03%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC92,156$207K<0.01%013F-HRTimelineGroup
J. Goldman & Co LP79,387$179K0.01%013F-HRTimeline
DIADEMA PARTNERS LP492,215$169K0.13%new13F-HRTimeline
Graham Capital Management, L.P.49,418$111K<0.01%+27,22913F-HRTimeline
Forefront Analytics, LLC47,630$107K0.12%+12,87713F-HRTimeline
STATE STREET CORPin group STATE STREET CORP45,659$103K<0.01%-1,42613F-HRTimelineGroup
Virtus Investment Advisers, LLCgroup of 2 filers holding44,007$99K+24,947Timeline
Clear Harbor Asset Management, LLC42,000$94.5K0.01%013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC39,030$87.8K<0.01%-55,42613F-HRTimelineGroup
PFG Investments, LLC37,433$84.2K0.01%-2,00013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.35,816$80.6K<0.01%new13F-HR/ATimelineGroup
GROUP ONE TRADING LLC34,281$77.1K<0.01%new13F-HRTimeline
Avanza Fonder AB28,121$66.6K<0.01%+8,52113F-HRTimeline
Centiva Capital, LP25,000$56.2K<0.01%013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd22,687$51.2K<0.01%new13F-HRTimelineGroup
Ascentis Independent Advisorsin group Ascentis Wealth Management, L…19,900$44.8K0.01%-2,70013F-HRTimelineGroup
OneDigital Investment Advisors LLC18,300$41.2K<0.01%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC17,931$40.3K<0.01%-5,73613F-HR/ATimelineGroup
Sheets Smith Investment Management16,890$38K0.04%013F-HRTimeline
HRT FINANCIAL LP15,713$35K<0.01%new13F-HRTimeline
Significant Wealth Partners LLC13,771$31K0.02%+2,96613F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC13,577$29.8K<0.01%013F-HRTimelineGroup
NFSG Corp11,000$24.8K0.01%+30013F-HRTimeline
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…10,000$22.5K<0.01%013F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC10,000$22.5K<0.01%013F-HRTimelineGroup
Marex Group Ltdin group Marex Group Ltd10,000$22.5K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC8,380$18.9K<0.01%-62113F-HR/ATimeline
RHUMBLINE ADVISERS6,588$14.8K<0.01%-64913F-HR/ATimeline
SIMPLEX TRADING, LLC4,117$9K<0.01%-50,98213F-HRTimeline
Arax Advisory Partners4,000$9K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.3,063$6.89K<0.01%+2,93413F-HRTimelineGroup
Allworth Financial LP1,500$3.81K<0.01%013F-HRTimeline
GPS Wealth Strategies Group, LLC1,500$3.38K<0.01%013F-HRTimeline
Caitong International Asset Management …1,484$3.34K<0.01%+1,16413F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,230$2.77K<0.01%+1,00113F-HRTimelineGroup
SIT INVESTMENT ASSOCIATES INCin group SIT INVESTMENT ASSOCIATES INC970$2K<0.01%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO365$821<0.01%013F-HRTimelineGroup
MAI Capital Management309$696<0.01%013F-HRTimeline
New England Capital Financial Advisors …300$675<0.01%013F-HRTimeline
Transce3nd, LLC127$286<0.01%013F-HRTimeline
PRINCIPAL SECURITIES, INC.in group PRINCIPAL FINANCIAL GROUP INC32$112<0.01%013F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\13$29<0.01%013F-HRTimelineGroup
Grove Bank & Trust12$27<0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS3$7<0.01%013F-HRTimelineGroup
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.