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Disclosery

AP AMPCO-PITTSBURG CORP

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COMMON STOCK (common), issuer CIK 6176

42 managers (43 13F filers) reported a position in AP shares at 2025-12-31, 8,318,227 shares in all. 11 filers opened a position and 5 filers sold out during the quarter.

Managers
42
13F filers
43
New
11
Added
12
Reduced
11
Sold out
5
Shares held by filers
8,318,227

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
GAMCO Investors (Gabelli)group of 2 filers holding3,875,128$20.7M+110,118Timeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC1,162,445$6.2M<0.01%+10,78013F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC654,635$3.49M<0.01%-13,06913F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC461,302$2.46M<0.01%-19,31713F-HRTimeline
Ancora Advisors LLCin group Ancora Advisors LLC354,100$1.89M0.04%-597,21813F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP334,973$1.79M<0.01%-1,14713F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP208,342$1.11M<0.01%new13F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.167,509$893K<0.01%-1,72913F-HRTimelineGroup
Informed Momentum Co LLC148,395$791K0.09%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC142,099$758K<0.01%013F-HRTimelineGroup
Teton Advisors, LLC130,000$693K0.48%+21,50013F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC107,535$573K0.01%-20,00013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO90,334$481K<0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP80,116$427K<0.01%+5,90013F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC65,515$348K<0.01%+8,52413F-HRTimelineGroup
RBF Capital, LLC60,000$320K0.01%-30,95013F-HR/ATimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…41,564$222K<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP28,419$151K<0.01%+7,42113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC28,251$151K<0.01%-3,59713F-HR/ATimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC25,369$135K<0.01%new13F-HRTimelineGroup
Central Pacific Bank - Trust Division22,401$119K0.01%013F-HRTimeline
GSA CAPITAL PARTNERS LLP18,479$98K0.01%013F-HRTimeline
UBS Group AGin group UBS Group AG16,020$85.4K<0.01%-7113F-HRTimelineGroup
HRT FINANCIAL LP14,580$77K<0.01%new13F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC13,874$73.9K<0.01%-17,52213F-HRTimelineGroup
ALGERT GLOBAL LLC12,570$67K<0.01%new13F-HR/ATimeline
HUB Investment Partners, LLC10,300$54.9K<0.01%new13F-HRTimeline
Belvedere Trading LLC10,287$54.8K0.01%new13F-HRTimeline
GROUP ONE TRADING LLC10,280$54.8K<0.01%+10,08013F-HRTimeline
SIMPLEX TRADING, LLC7,573$40.4K<0.01%+3,72513F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY6,871$36.6K<0.01%+62813F-HR/ATimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…2,500$13.3K<0.01%013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/2,215$11.8K<0.01%+313F-HRTimelineGroup
NewEdge Advisors, LLC1,849$9.86K<0.01%+76813F-HRTimeline
CITIGROUP INCin group CITIGROUP INC1,514$8.07K<0.01%-113F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.385$2.05K<0.01%013F-HRTimelineGroup
Farther Finance Advisors, LLC300$1.6K<0.01%new13F-HRTimeline
SHP Wealth Management100$533<0.01%13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP75$400<0.01%new13F-HRTimelineGroup
QUADRANT CAPITAL GROUP LLC18$96<0.01%013F-HRTimeline
SBI Securities Co., Ltd.4$21<0.01%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1$3<0.01%013F-HRTimelineGroup