AI Holders Summary · Q1 2026

64 institutions reported MASI in Q1 2026. SG Americas Securities, LLC leads at 23.3% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter

SG Americas Securities, LLC

CIK 0001313360

$93M523K0.10%Q1 2026 02

TUDOR INVESTMENT CORP ET AL

CIK 0000923093

$62M347K0.11%Q1 2026 03

ALLIANCEBERNSTEIN L.P.

CIK 0001109448

$59M455K0.02%Q1 2026 04

GLAZER CAPITAL, LLC

CIK 0001076809

$28M158K0.60%Q1 2026 05

TIG Advisors, LLC

CIK 0001358253

$24M135K1.11%Q1 2026 06

GW&K Investment Management, LLC

CIK 0001082917

$22M123K0.19%Q1 2026 07

SOROS FUND MANAGEMENT LLC

CIK 0001029160

$18M101K0.20%Q1 2026 08

CIBRA Capital Ltd

CIK 0002060725

$16M90K7.76%Q1 2026 09

HRT FINANCIAL LP

CIK 0001475597

$12M93K0.04%Q4 2025 10

D. E. Shaw & Co., Inc.

CIK 0001009207

$9M66K0.00%Q4 2025 11

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$8M46K0.00%Q1 2026 12

NEW YORK STATE TEACHERS RETIREMENT SYSTEM

CIK 0000314969

$7M39K0.01%Q1 2026 13

THRIVENT FINANCIAL FOR LUTHERANS

CIK 0000314984

$6M36K0.01%Q1 2026 14

CWM, LLC

CIK 0001535847

$6M35K0.02%Q1 2026 15

Engineers Gate Manager LP

CIK 0001620220

$5M30K0.07%Q1 2026 16

Vestcor Inc

CIK 0001536925

$5M30K0.15%Q1 2026 17

VOLORIDGE INVESTMENT MANAGEMENT, LLC

CIK 0001556921

$5M40K0.02%Q4 2025 18

CANADA LIFE ASSURANCE Co

CIK 0001046192

$5M26K0.01%Q1 2026 19

TPG GP A, LLC

CIK 0001903793

$4M25K0.12%Q1 2026 20

AMALGAMATED BANK

CIK 0000919192

$4M22K0.03%Q1 2026

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