Institutional Ownership
Ampco-Pittsburg Corp
CUSIP 032037103COMAPQ1 2026
13D / 13G Filings
40
Schedule 13D/13G on record
Beneficial Filers
13
Distinct reporting persons
Largest Stake
20.4%
Max % of class reported
Institutional Holders
60
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
40 filings · latest Jan 22, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 22, 2026 | Rutabaga Capital Management LLC/Ma | 13G/A | — | — | SEC |
| 2 | Dec 19, 2025 | Galloway Capital Partners, LLC | 13D | 5.2% | — | SEC |
| 3 | Nov 26, 2025 | The Louis Berkman Investment Company | 13D/A | 15.4% | — | SEC |
| 4 | Nov 14, 2025 | Ancora Alternatives LLC | 13D/A | 4.2% | — | SEC |
| 5 | Feb 26, 2025 | Rutabaga Capital Management LLC/Ma | 13G | 5.7% | 1.14M | SEC |
| 6 | Nov 14, 2024 | Ameriprise Financial Inc | 13G/A | 5.4% | 1.08M | SEC |
| 7 | Feb 20, 2024 | 2006 Irrevocable Trust Of Laura W. Van Loan For The Benefit Of Mary M. Crawford | 13D/A | 4.9% | 986.6K | SEC |
| 8 | Feb 14, 2024 | Ameriprise Financial Inc | 13G/A | 4.9% | 980.2K | SEC |
| 9 | Mar 31, 2023 | Ancora Advisors, LLC | 13D/A | 1.0% | 49.7K | SEC |
| 10 | Feb 14, 2023 | Ameriprise Financial Inc | 13G/A | 5.2% | 1.01M | SEC |
30 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Ampco-Pittsburg Corp.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Gamco Investors, Inc. Et Al | 2.49M | $16.75M |
| 2 | Gabelli Funds LLC | 1.40M | $9.41M |
| 3 | Ameriprise Financial Inc | 1.17M | $7.88M |
| 4 | Wells Fargo & Company/Mn | 656.0K | $4.41M |
| 5 | Renaissance Technologies LLC | 423.2K | $2.84M |
| 6 | Dimensional Fund Advisors LP | 355.4K | $2.39M |
| 7 | Huntleigh Advisors, Inc. | 230.5K | $1.55M |
| 8 | American Century Companies Inc | 218.9K | $1.47M |
| 9 | Meros Investment Management, LP | 214.8K | $1.44M |
| 10 | Blackrock, Inc. | 203.1K | $1.37M |