AI Holders Summary · Q1 2026

103 institutions reported PKOH in Q1 2026. GAMCO INVESTORS, INC. ET AL leads at 17.7% 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

GAMCO INVESTORS, INC. ET AL

CIK 0000807249

$30M1.2M0.29%Q1 2026 02

PRIVATE MANAGEMENT GROUP INC

CIK 0001142031

$25M1.0M0.71%Q1 2026 03

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$20M837K0.00%Q1 2026 04

BlackRock, Inc.

CIK 0002012383

$15M629K0.00%Q1 2026 05

GABELLI FUNDS LLC

CIK 0001081407

$12M512K0.08%Q1 2026 06

First Eagle Investment Management, LLC

CIK 0001325447

$12M481K0.02%Q1 2026 07

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$10M421K0.00%Q1 2026 08

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$6M234K0.00%Q1 2026 09

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$6M234K0.00%Q1 2026 10

ACADIAN ASSET MANAGEMENT LLC

CIK 0000916542

$5M222K0.01%Q1 2026 11

Teton Advisors, LLC

CIK 0002086025

$4M154K2.61%Q1 2026 12

STATE STREET CORP

CIK 0000093751

$4M150K0.00%Q1 2026 13

LSV ASSET MANAGEMENT

CIK 0001050470

$3M142K0.01%Q1 2026 14

JB CAPITAL PARTNERS LP

CIK 0001138532

$3M122K0.50%Q1 2026 15

Teton Advisors, Inc.

CIK 0001444874

$3M157K1.71%Q2 2025 16

Bank of New York Mellon Corp

CIK 0001390777

$3M111K0.00%Q1 2026 17

CM WEALTH ADVISORS LLC

CIK 0001764581

$3M110K0.57%Q1 2026 18

Keeley-Teton Advisors, LLC

CIK 0001700530

$2M96K0.25%Q1 2025 19

NORTHERN TRUST CORP

CIK 0000073124· Index

$2M73K0.00%Q1 2026 20

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$2M72K0.00%Q1 2026

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