AI Holders Summary · Q4 2025

32 institutions reported NEPH in Q4 2025. WEXFORD CAPITAL LP leads at 77.2% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(4 on this page)

#HolderValueShares% port.Quarter

WEXFORD CAPITAL LP

CIK 0001048462

$18M3.6M3.40%Q4 2025 02

Topline Capital Management, LLC

CIK 0001792549

$2M582K0.29%Q1 2026 03

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$592K199K0.00%Q1 2026 04

Cornerstone Capital, Inc.

CIK 0000819535

$384K129K0.04%Q1 2026 05

BARD ASSOCIATES INC

CIK 0001105907

$361K121K0.09%Q1 2026 06

MORGAN STANLEY

CIK 0000895421

$331K111K0.00%Q1 2026 07

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$296K99K0.00%Q1 2026 08

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$217K73K0.00%Q1 2026 09

Mesirow Financial Investment Management, Inc.

CIK 0001469475

$214K60K0.00%Q2 2026 10

HighTower Advisors, LLC

CIK 0001462245

$178K60K0.00%Q1 2026 11

ESSEX INVESTMENT MANAGEMENT CO LLC

CIK 0000201772

$116K39K0.02%Q1 2026 12

Quadrature Capital Ltd

CIK 0001651424

$112K23K0.00%Q4 2025 13

VANGUARD FIDUCIARY TRUST CO

CIK 0000933478· Index

$110K37K0.00%Q1 2026 14

BLAIR WILLIAM & CO/IL

CIK 0000902367

$108K36K0.00%Q1 2026 15

MARSHALL WACE, LLP

CIK 0001318757

$107K22K0.00%Q4 2025 16

CITADEL ADVISORS LLC

CIK 0001423053

$101K21K0.00%Q4 2025 17

De Lisle Partners LLP

CIK 0002011184

$75K25K0.01%Q1 2026 18

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$62K21K0.00%Q1 2026 19

NAVELLIER & ASSOCIATES INC

CIK 0000872163

$57K19K0.01%Q1 2026 20

STATE STREET CORP

CIK 0000093751

$47K16K0.00%Q1 2026

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