AI Holders Summary · Q4 2025

171 institutions reported HRTX in Q4 2025. Clearline Capital LP leads at 23.7% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(2 on this page)

#HolderValueShares% port.Quarter

Clearline Capital LP

CIK 0001600136

$16M12.2M0.78%Q4 2025 02

Rubric Capital Management LP

CIK 0001687509

$13M30.0M0.12%Q2 2026 03

TANG CAPITAL MANAGEMENT LLC

CIK 0001232621

$5M6.3M0.25%Q1 2026 04

BlackRock, Inc.

CIK 0002012383

$5M10.6M0.00%Q2 2026 05

D. E. Shaw & Co., Inc.

CIK 0001009207

$4M3.0M0.00%Q4 2025 06

Velan Capital Investment Management LP

CIK 0001848809

$4M8.8M2.28%Q2 2026 07

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$3M7.8M0.00%Q2 2026 08

Tejara Capital Ltd

CIK 0001879713

$3M6.5M1.14%Q2 2026 09

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$2M4.3M0.00%Q2 2026 10

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$2M4.1M0.00%Q2 2026 11

Stonepine Capital Management, LLC

CIK 0001440771

$2M1.5M0.96%Q2 2026 12

JW Asset Management, LLC

CIK 0001549738

$2M3.8M0.50%Q2 2026 13

STATE STREET CORP

CIK 0000093751

$1M3.2M0.00%Q2 2026 14

Caption Management, LLC

CIK 0001706766

$1M3.1M0.01%Q2 2026 15

UBS Group AG

CIK 0001610520

$1M3.0M0.00%Q2 2026 16

Pale Fire Capital SE

CIK 0001922318

$1M2.5M0.08%Q2 2026 17

MARSHALL WACE, LLP

CIK 0001318757

$1M2.4M0.00%Q2 2026 18

Congress Park Capital LLC

CIK 0001730945

$861K2.0M0.23%Q2 2026 19

Richmond Brothers, Inc.

CIK 0001540462

$765K1.8M0.40%Q2 2026 20

TWO SIGMA ADVISERS, LP

CIK 0001478735

$675K520K0.00%Q4 2025

Page 1 of 9

151 more holders available. Log in →