AI Holders Summary · Q2 2026

155 institutions reported MEC in Q2 2026. Portolan Capital Management, LLC leads at 9.3% 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

Portolan Capital Management, LLC

CIK 0001350290

$49M1.3M1.82%Q2 2026 02

FMR LLC

CIK 0000315066

$48M1.3M0.00%Q2 2026 03

BlackRock, Inc.

CIK 0002012383

$44M1.2M0.00%Q2 2026 04

Allspring Global Investments Holdings, LLC

CIK 0001890906

$38M1.1M0.06%Q2 2026 05

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 0000938206

$32M846K0.18%Q2 2026 06

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC

CIK 0001638555

$30M800K0.53%Q2 2026 07

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$29M782K0.01%Q2 2026 08

ROYCE & ASSOCIATES LP

CIK 0000906304

$28M752K0.23%Q2 2026 09

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$28M744K0.00%Q2 2026 10

First Eagle Investment Management, LLC

CIK 0001325447

$28M739K0.02%Q2 2026 11

Boston Partners

CIK 0001386060

$26M696K0.02%Q2 2026 12

Jupiter Topco LLC

CIK 0002146052

$22M575K0.01%Q2 2026 13

BLAIR WILLIAM & CO/IL

CIK 0000902367

$20M547K0.05%Q2 2026 14

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$18M478K0.00%Q2 2026 15

EVR Research LP

CIK 0001843019

$17M442K8.17%Q2 2026 16

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$14M375K0.00%Q2 2026 17

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$14M361K0.00%Q2 2026 18

JPMORGAN CHASE & CO

CIK 0000019617

$13M347K0.00%Q2 2026 19

KENNEDY CAPITAL MANAGEMENT LLC

CIK 0000884589

$13M336K0.22%Q2 2026 20

Ophir Asset Management Pty Ltd

CIK 0001844640

$12M327K1.01%Q2 2026

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