AI Holders Summary · Q2 2026

107 institutions reported KPTI in Q2 2026. RA CAPITAL MANAGEMENT, L.P. leads at 10.4% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(3 on this page)

#HolderValueShares% port.Quarter

RA CAPITAL MANAGEMENT, L.P.

CIK 0001346824

$19M1.9M0.16%Q2 2026 02

ADAGE CAPITAL PARTNERS GP, L.L.C.

CIK 0001165408

$15M1.5M0.02%Q2 2026 03

ACORN CAPITAL ADVISORS, LLC

CIK 0002054410

$15M1.5M4.05%Q2 2026 04

Ikarian Capital, LLC

CIK 0001778253

$14M2.6M1.16%Q1 2026 05

GOLDMAN SACHS GROUP INC

CIK 0000886982

$14M1.4M0.00%Q2 2026 06

BlackRock, Inc.

CIK 0002012383

$14M1.4M0.00%Q2 2026 07

Kalehua Capital Management LLC

CIK 0002106181

$13M1.4M4.27%Q2 2026 08

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$9M959K0.00%Q2 2026 09

Catalio Capital Management, LP

CIK 0001958125

$9M941K1.73%Q2 2026 10

T. Rowe Price Investment Management, Inc.

CIK 0001897612

$9M1.5M0.01%Q1 2026 11

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$7M695K0.00%Q2 2026 12

Avidity Partners Management LP

CIK 0001791827

$6M927K0.69%Q1 2026 13

NEA Management Company, LLC

CIK 0001512848

$6M577K0.35%Q2 2026 14

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$5M546K0.00%Q2 2026 15

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$5M531K0.00%Q2 2026 16

Ghisallo Capital Management LLC

CIK 0001825214

$5M500K0.10%Q2 2026 17

Soleus Capital Management, L.P.

CIK 0001802630

$4M440K0.15%Q2 2026 18

Caption Management, LLC

CIK 0001706766

$4M378K0.02%Q2 2026 19

UBS Group AG

CIK 0001610520

$3M354K0.00%Q2 2026 20

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$3M342K0.00%Q2 2026

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