AP Ampco-Pittsburgh Corporation
Ampco-Pittsburgh Corporation (AP) Institutional Ownership
What the institutions did with AP last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 253.1K | 45.6% |
| Huntleigh Advisors, Inc. | 143.5K | 25.8% |
| RITHOLTZ WEALTH MANAGEMENT | 75.6K | 13.6% |
| Bank of New York Mellon Corp | 34.3K | 6.2% |
| Central Pacific Bank - Trust Division | 22.4K | 4.0% |
| STRS OHIO | 21.0K | 3.8% |
| Fortitude Family Office, LLC | 1.1K | 0.2% |
| GAMMA Investing LLC | 1.1K | 0.2% |
| CITIGROUP INC | 805 | 0.1% |
| Farther Finance Advisors, LLC | 634 | 0.1% |
| Sterling Capital Management LLC | 532 | 0.1% |
| Markowski Investments | 500 | 0.1% |
| Parkside Financial Bank & Trust | 308 | 0.1% |
| SJS Investment Consulting Inc. | 173 | 0.0% |
| SBI Securities Co., Ltd. | 166 | 0.0% |
| Root Financial Partners, LLC | 117 | 0.0% |
| Essential Partners LLC | 40 | 0.0% |
| EverSource Wealth Advisors, LLC | 30 | 0.0% |
| Provenance Wealth Advisors, LLC | 27 | 0.0% |
| True Wealth Design, LLC | 22 | 0.0% |
| Caitong International Asset Management Co., Ltd | 6 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| RITHOLTZ WEALTH MANAGEMENT | Reduced | 132.9K | 75.6K | -57.4K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 295.4K | 253.1K | -42.4K |
| IMC-Chicago, LLC | Sold Out | 13.3K | 0 | -13.3K |
| CITIGROUP INC | Reduced | 9.1K | 805 | -8.3K |
| STRS OHIO | Increased | 14.0K | 21.0K | +7.0K |
| Huntleigh Advisors, Inc. | Increased | 141.2K | 143.5K | +2.3K |
| GAMMA Investing LLC | New | 0 | 1.1K | +1.1K |
| Fortitude Family Office, LLC | Increased | 61 | 1.1K | +1.1K |
| Sterling Capital Management LLC | Increased | 57 | 532 | +475 |
| Bank of New York Mellon Corp | Increased | 34.0K | 34.3K | +360 |
| Parkside Financial Bank & Trust | New | 0 | 308 | +308 |
| SJS Investment Consulting Inc. | New | 0 | 173 | +173 |
| Root Financial Partners, LLC | New | 0 | 117 | +117 |
| SBI Securities Co., Ltd. | Increased | 125 | 166 | +41 |
| Essential Partners LLC | New | 0 | 40 | +40 |
| Farther Finance Advisors, LLC | Increased | 600 | 634 | +34 |
| EverSource Wealth Advisors, LLC | New | 0 | 30 | +30 |
| Provenance Wealth Advisors, LLC | New | 0 | 27 | +27 |
| SALEM INVESTMENT COUNSELORS INC | Sold Out | 25 | 0 | -25 |
| True Wealth Design, LLC | New | 0 | 22 | +22 |
| Caitong International Asset Management Co., Ltd | Increased | 2 | 6 | +4 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.