AMPCO PITTSBURGH CORP - AP
Detailed investor-level table based on 13F positions.
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 |