Ampco-Pittsburgh Corporation (AP) ownership: Top institutional holder: GAMCO INVESTORS, INC. ET AL ($16.75M). Insider activity: Net Buyer (13 buys, 7 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| GAMCO INVESTORS, INC. ET AL | 2491957.00 | $16.75M | 2026-03-31 |
| GABELLI FUNDS LLC | 1399800.00 | $9.41M | 2026-03-31 |
| AMERIPRISE FINANCIAL INC | 1173024.00 | $7.88M | 2026-03-31 |
| BlackRock Fund Advisors | 280053.00 | $4.69M | 2016-12-31 |
| WELLS FARGO & COMPANY/MN | 656001.00 | $4.41M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 600114.00 | $4.03M | 2026-03-31 |
| VANGUARD GROUP INC | 654635.00 | $3.49M | 2025-12-31 |
| RENAISSANCE TECHNOLOGIES LLC | 423219.00 | $2.84M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Buy | null | 2026-05-19 | |
| Sell | null | 2026-05-19 | |
| Buy | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Buy | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Buy | null | 2026-05-15 | |
| Sell | null | 2026-05-15 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.