AI Holders Summary · Q2 2026

279 institutions reported AMPX in Q2 2026. BlackRock, Inc. leads at 14.6% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(5 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$157M11.3M0.00%Q2 2026 02

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$114M8.2M0.01%Q2 2026 03

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$111M6.6M0.01%Q1 2026 04

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$77M5.6M0.00%Q2 2026 05

UBS Group AG

CIK 0001610520

$74M5.4M0.01%Q2 2026 06

CITADEL ADVISORS LLC

CIK 0001423053

$73M5.3M0.01%Q2 2026 07

MORGAN STANLEY

CIK 0000895421

$71M5.1M0.00%Q2 2026 08

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$60M4.3M0.04%Q2 2026 09

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$49M3.5M0.00%Q2 2026 10

STATE STREET CORP

CIK 0000093751

$45M3.2M0.00%Q2 2026 11

GOLDMAN SACHS GROUP INC

CIK 0000886982

$35M2.5M0.00%Q2 2026 12

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$32M1.9M0.00%Q1 2026 13

JUPITER ASSET MANAGEMENT LTD

CIK 0001215838

$30M2.1M0.15%Q2 2026 14

Point72 Asset Management, L.P.

CIK 0001603466

$25M1.5M0.03%Q1 2026 15

LMR Partners LLP

CIK 0001578621

$24M1.8M0.09%Q2 2026 16

Vanguard Portfolio Management

CIK 0002100121· Index

$20M1.5M0.00%Q2 2026 17

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$20M1.4M0.01%Q2 2026 18

Hood River Capital Management LLC

CIK 0001578177

$20M1.4M0.14%Q2 2026 19

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$20M1.4M0.03%Q2 2026 20

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 0000938206

$19M1.3M0.11%Q2 2026

Page 1 of 14

259 more holders available. Log in →