MEREO BIOPHARMA GROUP PL-ADR (MREO) Institutional Ownership Changes & 13F Activity

MEREO BIOPHARMA GROUP PL-ADR (MREO) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCSell-145,97148,400$15,972
Q4 2025Renaissance Technologies LLCSell-396,500194,371$80,994
Q3 2025Renaissance Technologies LLCSell-889,600590,871$1,217,194
Q2 2025Renaissance Technologies LLCBuy130,0001,480,471$4,012,076
Q1 2025Renaissance Technologies LLCBuy161,0001,350,471$3,038,560
Q4 2024Renaissance Technologies LLCSell-115,9001,189,471$4,163,149
Q3 2024Renaissance Technologies LLCSell-456,6321,305,371$5,365,075
Q2 2024Renaissance Technologies LLCBuy89,6941,762,003$6,343,211
Q1 2024Renaissance Technologies LLCSell-125,7001,672,309$5,519
Q4 2023Renaissance Technologies LLCBuy70,4391,798,009$4,153
Q3 2023Renaissance Technologies LLCSell-51,2021,727,570$2,229
Q2 2023Renaissance Technologies LLCBuy862,8631,778,772$2,348
Q1 2023Renaissance Technologies LLCSell-341,460915,909$647
Q4 2022Renaissance Technologies LLCBuy23,7551,257,369$943
Q3 2022Renaissance Technologies LLCBuy624,7051,233,614$1,062
Q2 2022Renaissance Technologies LLCBuy325,109608,909$682
Q1 2022Renaissance Technologies LLCBuy63,200283,800$318
Q4 2021Renaissance Technologies LLCSell-178,300220,600$353
Q3 2021Renaissance Technologies LLCBuy113,800398,900$965
Q2 2021Renaissance Technologies LLCBuy17,900285,100$904
Q1 2021Renaissance Technologies LLCSell-92,000267,200$900
Q4 2020Renaissance Technologies LLCBuy338,000359,200$1,286
Q3 2020Renaissance Technologies LLCSell-29,20021,200$56
Q2 2020Renaissance Technologies LLCSell-75,92350,400$154
Q4 2019Renaissance Technologies LLCSell-39,800126,323$414
Q3 2019Renaissance Technologies LLCSell-29,800166,123$495
Q2 2019Renaissance Technologies LLCBuy195,923195,923$494

Frequently asked questions about MREO activity

  • Which institutional owners are buying MREO?

    Institutional owners buying MREO include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MREO activity?

    "Buy" means an investor increased their reported position in MREO compared to the prior reporting period. This reflects growing exposure to MEREO BIOPHARMA GROUP PL-ADR (MREO) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MREO increasing?

    Institutional interest in MREO can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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