CARNEGIE, PA
AMPCO PITTSBURGH CORPAP— Latest position per institution from SEC 13F filings
15
Institutional holders
11.04M
Total shares held
87.54M
Estimated value
552.04K
Avg. position size
GAMCO INVESTORS, INC. ET AL
CIK 807249
Shares
2.46M
Value
21.28M
Filed
Jun 30, 2026
GABELLI FUNDS LLC
CIK 1081407
Shares
1.39M
Value
12.04M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
982.61K
Value
8.50M
Filed
Jun 30, 2026
AMERIPRISE FINANCIAL INC
CIK 820027
Shares
905.68K
Value
7.83M
Filed
Jun 30, 2026
WELLS FARGO & COMPANY/MN
CIK 72971
Shares
660.95K
Value
5.72M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
654.63K
Value
3.49M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
604.09K
Value
5.23M
Filed
Jun 30, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
414.42K
Value
3.58M
Filed
Jun 30, 2026
ANCORA ADVISORS LLC
CIK 1446114
Shares
354.10K
Value
1.89M
Filed
Dec 31, 2025
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
342.84K
Value
2.97M
Filed
Jun 30, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
328.85K
Value
2.84M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
295.44K
Value
2.56M
Filed
Jun 30, 2026
AUTO-OWNERS INSURANCE CO
CIK 1964189
Shares
242.10K
Value
636.72K
Filed
Sep 30, 2023
MEROS INVESTMENT MANAGEMENT, LP
CIK 1911372
Shares
239.91K
Value
2.08M
Filed
Jun 30, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
238.32K
Value
2.06M
Filed
Jun 30, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
208.97K
Value
1.81M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
191.62K
Value
147.54K
Filed
Jun 30, 2024
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
191.01K
Value
1.65K
Filed
Jun 30, 2026
O'SHAUGHNESSY ASSET MANAGEMENT, LLC
CIK 1423442
Shares
174.31K
Value
1.51M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
159.32K
Value
1.38M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | GAMCO INVESTORS, INC. ET AL | 807249 | 2.46M | 21.28M | Jun 30, 2026 |
| 2 | GABELLI FUNDS LLC | 1081407 | 1.39M | 12.04M | Jun 30, 2026 |
| 3 | BLACKROCK, INC. | 2012383 | 982.61K | 8.50M | Jun 30, 2026 |
| 4 | AMERIPRISE FINANCIAL INC | 820027 | 905.68K | 7.83M | Jun 30, 2026 |
| 5 | WELLS FARGO & COMPANY/MN | 72971 | 660.95K | 5.72M | Jun 30, 2026 |
| 6 | VANGUARD GROUP INC | 102909 | 654.63K | 3.49M | Dec 31, 2025 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 604.09K | 5.23M | Jun 30, 2026 |
| 8 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 414.42K | 3.58M | Jun 30, 2026 |
| 9 | ANCORA ADVISORS LLC | 1446114 | 354.10K | 1.89M | Dec 31, 2025 |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 342.84K | 2.97M | Jun 30, 2026 |
| 11 | AMERICAN CENTURY COMPANIES INC | 748054 | 328.85K | 2.84M | Jun 30, 2026 |
| 12 | DIMENSIONAL FUND ADVISORS LP | 354204 | 295.44K | 2.56M | Jun 30, 2026 |
| 13 | AUTO-OWNERS INSURANCE CO | 1964189 | 242.10K | 636.72K | Sep 30, 2023 |
| 14 | MEROS INVESTMENT MANAGEMENT, LP | 1911372 | 239.91K | 2.08M | Jun 30, 2026 |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 238.32K | 2.06M | Jun 30, 2026 |
| 16 | JANE STREET GROUP, LLC | 1595888 | 208.97K | 1.81M | Jun 30, 2026 |
| 17 | BLACKROCK FINANCE, INC. | 1364742 | 191.62K | 147.54K | Jun 30, 2024 |
| 18 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 191.01K | 1.65K | Jun 30, 2026 |
| 19 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 1423442 | 174.31K | 1.51M | Jun 30, 2026 |
| 20 | STATE STREET CORP | 93751 | 159.32K | 1.38M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.