AI Holders Summary · Q1 2026

30 institutions reported SEMR in Q1 2026. Greycroft LP leads at 33.3% 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

Greycroft LP

CIK 0001910274

$107M9.0M73.31%Q1 2026 02

GLAZER CAPITAL, LLC

CIK 0001076809

$75M6.3M1.59%Q1 2026 03

Siguler Guff Advisers, LLC

CIK 0001328551

$51M7.3M91.75%Q3 2025 04

ALLIANCEBERNSTEIN L.P.

CIK 0001109448

$25M2.1M0.01%Q1 2026 05

AQR Arbitrage LLC

CIK 0001167456

$18M1.5M0.38%Q4 2025 06

SOROS FUND MANAGEMENT LLC

CIK 0001029160

$18M1.5M0.19%Q1 2026 07

JANUS HENDERSON GROUP PLC

CIK 0001274173

$9M790K0.00%Q1 2026 08

D. E. Shaw & Co., Inc.

CIK 0001009207

$6M536K0.00%Q4 2025 09

VOLORIDGE INVESTMENT MANAGEMENT, LLC

CIK 0001556921

$4M370K0.02%Q4 2025 10

Engineers Gate Manager LP

CIK 0001620220

$2M173K0.03%Q1 2026 11

SYQUANT CAPITAL SAS

CIK 0001766392

$1M100K0.19%Q1 2026 12

SG Americas Securities, LLC

CIK 0001313360

$1M86K0.00%Q1 2026 13

Virtu Financial LLC

CIK 0001533964· Market maker

$546K46K0.02%Q1 2026 14

Brooklyn Investment Group

CIK 0001795705

$511K43K0.02%Q1 2026 15

AlphaQuest LLC

CIK 0001883897

$437K37K0.02%Q4 2025 16

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$422K35K0.00%Q1 2026 17

Murchinson Ltd.

CIK 0001838556

$240K20K0.03%Q1 2026 18

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$201K17K0.00%Q1 2026 19

TWO SIGMA ADVISERS, LP

CIK 0001478735

$124K10K0.00%Q4 2025 20

State of Alaska, Department of Revenue

CIK 0001370102

$69K6K0.00%Q1 2026

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