AMPCO PITTSBURGH CORP - AP

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
GAMCO INVESTORS, INC. ET AL History Added to 2,491,957 16,745 0.16% 0.13% 1 +21,129 0.86% Q1 2026 May 14, 2026
GABELLI FUNDS LLC History Reduced 1,399,800 9,406 0.06% 0.05% 2 -4,500 -0.32% Q1 2026 May 14, 2026
AMERIPRISE FINANCIAL INC History Added to 1,173,024 7,882 0.0% 0.0% 3 +10,579 0.91% Q1 2026 May 15, 2026
WELLS FARGO & COMPANY/MN History Added to 656,001 4,408 0.0% 4 +656,000 65600000.0% Q1 2026 May 11, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 600,114 4,032 0.0% 5 +600,114 New Q1 2026 May 15, 2026
VANGUARD GROUP INC History No change 654,635 3,489 0.0% 0.0% 6 0 0.0% Q4 2025 Jan 29, 2026
RENAISSANCE TECHNOLOGIES LLC History Reduced 423,219 2,844 0.0% 0.0% 7 -38,083 -8.26% Q1 2026 May 14, 2026
DIMENSIONAL FUND ADVISORS LP History Added to 355,427 2,388 0.0% 0.0% 8 +20,454 6.11% Q1 2026 May 07, 2026
Huntleigh Advisors, Inc. History New 230,478 1,548 0.26% 9 +230,478 New Q1 2026 Apr 21, 2026
AMERICAN CENTURY COMPANIES INC History New 218,860 1,470 0.0% 10 +218,860 New Q1 2026 May 15, 2026
Meros Investment Management, LP History New 214,850 1,443 0.63% 11 +214,850 New Q1 2026 May 14, 2026
BlackRock, Inc. History Added to 203,133 1,365 0.0% 0.0% 12 +35,624 21.27% Q1 2026 May 13, 2026
SEI INVESTMENTS CO History Added to 184,336 1,238 0.0% 0.0% 13 +94,002 104.06% Q1 2026 May 13, 2026
JANE STREET GROUP, LLC History Added to 168,301 1,130 0.0% 0.0% 14 +142,932 563.41% Q1 2026 May 12, 2026
MARSHALL WACE, LLP History Reduced 161,291 1,083 0.0% 0.0% 15 -47,051 -22.58% Q1 2026 May 14, 2026
MILLENNIUM MANAGEMENT LLC History New 160,408 1,077 0.0% 16 +160,408 New Q1 2026 May 15, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History Added to 154,410 1,037 0.02% 0.01% 17 +46,875 43.59% Q1 2026 May 15, 2026
GEODE CAPITAL MANAGEMENT, LLC History Reduced 135,063 908 0.0% 0.0% 18 -7,036 -4.95% Q1 2026 May 15, 2026
Teton Advisors, LLC History No change 130,000 873 0.61% 0.48% 19 0 0.0% Q1 2026 May 14, 2026
O'SHAUGHNESSY ASSET MANAGEMENT, LLC History New 122,418 822 0.0% 20 +122,418 New Q1 2026 May 13, 2026
RITHOLTZ WEALTH MANAGEMENT History New 118,779 798 0.01% 21 +118,779 New Q1 2026 Apr 20, 2026
Informed Momentum Co LLC History Reduced 115,793 778 0.09% 0.09% 22 -32,602 -21.97% Q1 2026 May 13, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 107,299 721 0.0% 0.0% 23 +65,735 158.15% Q1 2026 May 15, 2026
ACADIAN ASSET MANAGEMENT LLC History Added to 83,592 559 0.0% 0.0% 24 +18,077 27.59% Q1 2026 May 13, 2026
VANGUARD FIDUCIARY TRUST CO History New 72,813 489 0.0% 25 +72,813 New Q1 2026 May 08, 2026
RBF Capital, LLC History No change 60,000 403 0.02% 0.01% 26 0 0.0% Q1 2026 May 18, 2026
STATE STREET CORP History Reduced 59,416 399 0.0% 0.0% 27 -20,700 -25.84% Q1 2026 May 15, 2026
XTX Topco Ltd History New 48,582 326 0.01% 28 +48,582 New Q1 2026 May 15, 2026
Empowered Funds, LLC History New 46,875 315 0.0% 29 +46,875 New Q1 2026 May 14, 2026
UBS Group AG History Added to 43,721 293 0.0% 0.0% 30 +27,701 172.92% Q1 2026 May 05, 2026
GOLDMAN SACHS GROUP INC History Added to 40,730 273 0.0% 0.0% 31 +12,479 44.17% Q1 2026 May 15, 2026
CITADEL ADVISORS LLC History Added to 38,539 258 0.0% 0.0% 32 +13,665 54.94% Q1 2026 May 15, 2026
ALGERT GLOBAL LLC History Added to 28,932 194 0.0% 0.0% 33 +16,362 130.17% Q1 2026 May 14, 2026
NORTHERN TRUST CORP History No change 28,419 190 0.0% 0.0% 34 0 0.0% Q1 2026 May 14, 2026
Hudson Bay Capital Management LP History New 27,112 182 0.0% 35 +27,112 New Q1 2026 May 13, 2026
Central Pacific Bank - Trust Division History No change 22,401 150 0.02% 0.01% 36 0 0.0% Q1 2026 Apr 07, 2026
BANK OF AMERICA CORP /DE/ History Added to 20,280 136 0.0% 0.0% 37 +18,065 815.58% Q1 2026 May 15, 2026
SIMPLEX TRADING, LLC History Added to 20,162 135 0.0% 0.0% 38 +12,589 166.24% Q1 2026 May 14, 2026
OMERS ADMINISTRATION Corp History New 19,300 129 0.0% 39 +19,300 New Q1 2026 May 15, 2026
Brevan Howard Capital Management LP History New 18,727 125 0.0% 42 +18,727 New Q1 2026 May 15, 2026
HRT FINANCIAL LP History Added to 18,621 125 0.0% 0.0% 41 +4,041 27.72% Q1 2026 May 14, 2026
GSA CAPITAL PARTNERS LLP History Added to 18,657 125 0.01% 0.01% 40 +178 0.96% Q1 2026 May 08, 2026
Janney Montgomery Scott LLC History New 17,516 118 0.0% 43 +17,516 New Q1 2026 Apr 22, 2026
Palumbo Wealth Management LLC History New 15,233 102 0.02% 44 +15,233 New Q1 2026 May 12, 2026
RAFFLES ASSOCIATES LP History New 15,000 100 0.09% 45 +15,000 New Q1 2026 May 15, 2026
D'Orazio & Associates, Inc. History New 11,103 74 0.01% 46 +11,103 New Q1 2026 May 07, 2026
DUDLEY CAPITAL MANAGEMENT, LLC History New 11,000 73 0.03% 48 +11,000 New Q1 2026 May 05, 2026
Hodges Capital Management Inc. History New 10,910 73 0.01% 47 +10,910 New Q1 2026 Apr 28, 2026
Schonfeld Strategic Advisors LLC History New 10,300 69 0.0% 49 +10,300 New Q1 2026 May 15, 2026
MORGAN STANLEY History Added to 9,581 64 0.0% 0.0% 50 +2,710 39.44% Q1 2026 May 15, 2026
Vanguard Global Advisers, LLC History New 7,419 49 0.0% 51 +7,419 New Q1 2026 May 08, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Added to 6,600 44 0.0% 0.0% 52 +4,100 164.0% Q1 2026 May 08, 2026
GROUP ONE TRADING LLC History Reduced 6,662 44 0.0% 0.0% 53 -3,618 -35.19% Q1 2026 May 13, 2026
CITIGROUP INC History No change 1,514 10 0.0% 0.0% 54 0 0.0% Q1 2026 May 11, 2026
ROYAL BANK OF CANADA History New 970 7 0.0% 55 +970 New Q1 2026 May 15, 2026
JONES FINANCIAL COMPANIES LLLP History Added to 966 6 0.0% 56 +891 1188.0% Q1 2026 May 15, 2026
Farther Finance Advisors, LLC History Added to 600 4 0.0% 0.0% 57 +300 100.0% Q1 2026 Apr 07, 2026
OSAIC HOLDINGS, INC. History Reduced 360 2 0.0% 0.0% 58 -25 -6.49% Q1 2026 May 15, 2026
BARCLAYS PLC History New 260 1 0.0% 59 +260 New Q1 2026 May 14, 2026
Ancora Advisors LLC History Closed out 0 0 0.04% -354,100 -100.0% Q1 2026 May 15, 2026
HUB Investment Partners, LLC History Closed out 0 0 0.0% -10,300 -100.0% Q1 2026 May 15, 2026
Belvedere Trading LLC History Closed out 0 0 0.0% -10,287 -100.0% Q1 2026 May 12, 2026
NewEdge Advisors, LLC History Closed out 0 0 0.0% -1,849 -100.0% Q1 2026 May 15, 2026
Tower Research Capital LLC (TRC) History New 141 0 +141 New Q1 2026 May 15, 2026
SHP Wealth Management History Closed out 0 0 -100 -100.0% Q1 2026 May 08, 2026
Fortitude Family Office, LLC History New 61 0 +61 New Q1 2026 Apr 15, 2026
SALEM INVESTMENT COUNSELORS INC History New 25 0 +25 New Q1 2026 Apr 29, 2026
SBI Securities Co., Ltd. History Added to 5 0 +1 25.0% Q1 2026 Apr 27, 2026
QUADRANT CAPITAL GROUP LLC History No change 18 0 0 0.0% Q1 2026 May 13, 2026