Ampco-PittsburghAP
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 43 institutions reported holding Ampco-Pittsburgh Corp. (AP) in their 13F filings, up 7 from Q3 2025. 11 opened new positions and 5 sold out. The largest holders were GAMCO Investors ($13.2M), Gabelli Funds LLC ($7.5M) and Ameriprise Financial Inc. ($6.2M). 3 famous investors held it, including Mario Gabelli (0.1% of GAMCO Investors's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Ampco-Pittsburgh Corp.
- CUSIP
- 032037103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 11 | $3.0M |
| Exits | 5 | $28K |
All 13F filers, Q3 2025 → Q4 2025: 741,563 shares bought and 716,831 shares sold, net +24,732 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 43 holders
| GAMCO Investors | 0.13% | Add +3.6% | 2,470,828 | $13.2M |
| Gabelli Funds LLC | 0.05% | Add +1.7% | 1,404,300 | $7.5M |
| Ameriprise Financial Inc. | 0.00% | Add +0.9% | 1,162,445 | $6.2M |
| Vanguard Group Inc. | 0.00% | Reduce -2.0% | 654,635 | $3.5M |
| Renaissance Technologies | 0.00% | Reduce -4.0% | 461,302 | $2.5M |
| Ancora Advisors LLC | 0.04% | Reduce -62.8% | 354,100 | $1.9M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -0.3% | 334,973 | $1.8M |
| Marshall Wace, LLP | 0.00% | New | 208,342 | $1.1M |
| BlackRock, Inc. | 0.00% | Reduce -1.0% | 167,509 | $893K |
| Informed Momentum Co LLC | 0.09% | New | 148,395 | $791K |
| Geode Capital Management, LLC | 0.00% | No change | 142,099 | $758K |
| Teton Advisors, LLC | 0.48% | Add +19.8% | 130,000 | $693K |
| Bridgeway Capital Management, LLC | 0.01% | Reduce -15.7% | 107,535 | $573K |
| Sei Investments Co. | 0.00% | New | 90,334 | $481K |
| State Street Corp. | 0.00% | Add +8.0% | 80,116 | $427K |
| Acadian Asset Management LLC | 0.00% | Add +15.0% | 65,515 | $348K |
| RBF Capital, LLC | 0.01% | Reduce -34.0% | 60,000 | $320K |
| Susquehanna International Group, LLP | 0.00% | New | 41,564 | $222K |
| Northern Trust Corp. | 0.00% | Add +35.3% | 28,419 | $151K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -11.3% | 28,251 | $151K |
| Jane Street Group, LLC | 0.00% | New | 25,369 | $135K |
| Central Pacific Bank - Trust Division | 0.02% | No change | 22,401 | $119K |
| Gsa Capital Partners LLP | 0.01% | No change | 18,479 | $98K |
| UBS Group AG | 0.00% | Reduce -0.4% | 16,020 | $85K |
| HRT Financial LP | 0.00% | New | 14,580 | $77K |
| Citadel Advisors | 0.00% | Reduce -55.8% | 13,874 | $74K |
| Algert Global LLC | 0.00% | New | 12,570 | $67K |
| HUB Investment Partners, LLC | 0.00% | New | 10,300 | $55K |
| Belvedere Trading LLC | 0.01% | New | 10,287 | $55K |
| Group One Trading LLC | 0.00% | Add +5040.0% | 10,280 | $55K |
| Simplex Trading, LLC | 0.00% | Add +96.8% | 7,573 | $40K |
| Morgan Stanley | 0.00% | Add +10.1% | 6,871 | $37K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 2,500 | $13K |
| Bank of America Corp. | 0.00% | Add +0.1% | 2,215 | $12K |
| NewEdge Advisors, LLC | 0.00% | Add +71.0% | 1,849 | $10K |
| Citigroup Inc. | 0.00% | Reduce -0.1% | 1,514 | $8K |
| Osaic Holdings, Inc. | 0.00% | No change | 385 | $2K |
| Farther Finance Advisors, LLC | 0.00% | New | 300 | $2K |
| SHP Wealth Management | 0.00% | — | 100 | $533 |
| Jones Financial Companies LLLP | 0.00% | New | 75 | $400 |
| Quadrant Capital Group LLC | 0.00% | No change | 18 | $96 |
| SBI Securities Co., Ltd. | 0.00% | No change | 4 | $21 |
| Wells Fargo & Company | 0.00% | No change | 1 | $3 |
"% of holder's portfolio" is AP's weight in each manager's 13F, not the share of Ampco-Pittsburgh Corp. the manager owns.