MEREO BIOPHARMA GROUP PLC

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MREO·589492107·US·ADR·Healthcare - Biotechnology-13D/G

MREO (MEREO BIOPHARMA GROUP PLC) is held by 31 institutional investors as of Q2 2026. Largest holders: BANK OF AMERICA CORP /DE/ ($2.6M), UBS Group AG ($460,346), TWO SIGMA INVESTMENTS, LP ($419,123). Net institutional sentiment: Mixed.

31

Holders

(2 Elite)

$4.6M

Total Value

55% (29)

Consensus

16 buying - 13 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)82

Insider (Form 4)37

Activist (13D/13G)62

Congressional (STOCK Act)63

Holder Quality

26

★★★★★

Elite

52

★★★★

Strong

34

★★★

Solid

72

★★

Below

53

★

Weak

Held by 31 funds

2 elite

Who's Trading

Source dates: Price Oct 15, 2026 · Insiders none · Activists Aug 14, 2026 · Congress none

ActivistECEcoR1 Capital, LLC0.6%Aug 14, 2026

ActivistECEcoR1 Capital, LLC8.4%May 15, 2026

ActivistJANUS HENDERSON GROUP PLC0.0%Feb 17, 2026

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Top Holders

Top Holders (31)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BANK OF AMERICA CORP /DE/	Decreased	8.2M	$2.6M	0.0%	-8.09%	0
UBS Group AG	Decreased	1.4M(-2.9%)	$460,346	0.0%	-82.18%	0
TWO SIGMA INVESTMENTS, LP	Increased	1.3M(+602.3%)	$419,123	0.0%	-48.32%	39
JANE STREET GROUP, LLC	Increased	774,944(+453.6%)	$246,200	0.0%	-57.98%	25
WAWealthspire Advisors, LLC	Decreased	765,000(-3.9%)	$243,041	0.0%	-24.63%	0
CITADEL ADVISORS LLC	New	444,158	$141,109	0.0%	-2.83%	34
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Increased	213,270(+8.9%)	$67,756	0.0%	-6.08%	16
MWMARSHALL WACE, LLP	Decreased	179,884(-73.8%)	$57,563	0.0%	-24.63%	0
XTX Topco Ltd	Increased	174,481(+106.6%)	$55,433	0.0%	-14.76%	33
GROUP ONE TRADING LLC	Decreased	167,515(-50.1%)	$53,220	0.0%	-70.60%	0
STATE STREET CORP	Increased	134,772(+1.0%)	$42,817	0.0%	-88.23%	14
NOMURA HOLDINGS INC	New	104,361	$33,155	0.0%	-2.83%	30
GOLDMAN SACHS GROUP INC	New	85,180	$27,062	0.0%	-2.83%	30
BlackRock, Inc.	Decreased	69,678(-77.0%)	$22,137	0.0%	-90.33%	0
JPMORGAN CHASE & CO	Increased	58,531(+167.9%)	$19,421	0.0%	-4.19%	20
Virtu Financial LLC	Increased	61,285(+68.1%)	$19,000	0.0%	-17.09%	27
RENAISSANCE TECHNOLOGIES LLC	Increased	52,100(+7.6%)	$16,552	0.0%	-80.52%	13
RHUMBLINE ADVISERS	Increased	26,784(+36.9%)	$8,511	0.0%	-71.38%	15
Centiva Capital, LP	Unchanged	25,000	$7,943	0.0%	-77.11%	0
EGEngineers Gate Manager LP	Decreased	23,953	$7,610	0.0%	-16.49%	0

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MREOMEREO BIOPHARMA GROUP PLC

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer