DOSSIER · 13F Holders · Q1 2026Cheap mega-capRe-rated

NBP

I MAB

51 institutions still hold I MAB as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 44975P103·51 13F holders·last filed Mar 31, 2026

Market cap

—

▲ 6.0%

vs prior quarter

13F value held

$70M

58.0% inst. owned

of float

Holders

51

-86 QoQ

filers reporting

Activity

+91 / −104

+781 added · −857 reduced

this quarter

Concentration

21.20%

JANUS HENDERSON GROUP PLC #1

top holder share

AI Holders Summary · Q1 2026

51 institutions reported NBP in Q1 2026. JANUS HENDERSON GROUP PLC leads at 21.2% of the visible book. -86 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

Hide index funds / market makers / custodians(1 on this page)

#HolderValueShares% port.Quarter

JANUS HENDERSON GROUP PLC

$15M6.0M0.01%Q1 2026 02

HHLR ADVISORS, LTD.

$15M6.0M0.88%Q1 2026 03

$9M3.8M0.00%Q1 2026 04

$7M3.0M0.20%Q1 2026 05

AIHC Capital Management Ltd

$6M2.3M4.65%Q1 2026 06

Point72 Asset Management, L.P.

$3M1.4M0.00%Q1 2026 07

Candriam S.C.A.

$3M1.1M0.01%Q1 2026 08

ADAGE CAPITAL PARTNERS GP, L.L.C.

$2M1.0M0.00%Q1 2026 09

Woodline Partners LP

$2M700K0.01%Q1 2026 10

BlackRock, Inc.

$2M627K0.00%Q1 2026 11

Exome Asset Management LLC

$1M577K0.73%Q1 2026 12

STATE STREET CORP

$910,463370K0.00%Q1 2026 13

Fiera Capital Corp

$776,575316K0.00%Q1 2026 14

$736,275299K0.00%Q1 2026 15

RENAISSANCE TECHNOLOGIES LLC

$670,134272K0.00%Q1 2026 16

Taikang Asset Management (Hong Kong) Co Ltd

$420,490171K0.04%Q1 2026 17

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$359,952146K0.00%Q1 2026 18

GOLDMAN SACHS GROUP INC

$276,659112K0.00%Q1 2026 19

$249,712102K0.00%Q1 2026 20

AXQ CAPITAL, LP

$204,99283K0.03%Q1 2026

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