AI Holders Summary · Q1 2026

274 institutions reported PRLB in Q1 2026. BlackRock, Inc. leads at 21.3% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(6 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$210M3.7M0.00%Q1 2026 02

DISCIPLINED GROWTH INVESTORS INC /MN

CIK 0001050442

$142M2.5M2.91%Q1 2026 03

Vanguard Portfolio Management

CIK 0002100121· Index

$88M1.5M0.00%Q1 2026 04

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$73M1.3M0.02%Q1 2026 05

STATE STREET CORP

CIK 0000093751

$62M1.1M0.00%Q1 2026 06

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$59M1.0M0.00%Q1 2026 07

Rubric Capital Management LP

CIK 0001687509

$57M1.1M0.68%Q4 2025 08

AMERICAN CAPITAL MANAGEMENT INC

CIK 0001320168

$36M628K1.92%Q1 2026 09

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$33M580K0.00%Q1 2026 10

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$30M520K0.05%Q1 2026 11

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

CIK 0001164508

$26M464K0.01%Q1 2026 12

FMR LLC

CIK 0000315066

$24M422K0.00%Q1 2026 13

PRUDENTIAL FINANCIAL INC

CIK 0001137774

$23M400K0.03%Q1 2026 14

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 0000938206

$21M369K0.15%Q1 2026 15

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

CIK 0000884546· Index

$21M360K0.00%Q1 2026 16

Nuveen, LLC

CIK 0001871926

$18M317K0.00%Q1 2026 17

S Squared Technology, LLC

CIK 0001322924

$17M296K6.39%Q1 2026 18

MORGAN STANLEY

CIK 0000895421

$17M294K0.00%Q1 2026 19

NORTHERN TRUST CORP

CIK 0000073124· Index

$15M267K0.00%Q1 2026 20

NORDEA INVESTMENT MANAGEMENT AB

CIK 0001218210

$12M214K0.01%Q1 2026

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