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Disclosery

AP AMPCO-PITTSBURG CORP

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COMMON STOCK (common), issuer CIK 6176

60 managers (63 13F filers) reported a position in AP shares at 2026-03-31, 10,263,284 shares in all. 23 filers opened a position and 5 filers sold out during the quarter.

Managers
60
13F filers
63
New
23
Added
22
Reduced
9
Sold out
5
Shares held by filers
10,263,284

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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 holding3,891,757$26.2M+16,629Timeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC1,173,024$7.88M<0.01%+10,57913F-HR/ATimelineGroup
VANGUARD GROUP INCgroup of 3 filers holding680,346$4.57MnewTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN656,001$4.41M<0.01%+656,00013F-HR/ATimelineGroup
RENAISSANCE TECHNOLOGIES LLC423,219$2.84M<0.01%-38,08313F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP355,427$2.39M<0.01%+20,45413F-HRTimelineGroup
Huntleigh Advisors, Inc.230,478$1.55M0.26%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC218,860$1.47M<0.01%new13F-HRTimelineGroup
Meros Investment Management, LP214,850$1.44M0.63%new13F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.203,133$1.37M<0.01%+35,62413F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO184,336$1.24M<0.01%+94,00213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC168,301$1.13M<0.01%+142,93213F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP161,291$1.08M<0.01%-47,05113F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC160,408$1.08M<0.01%new13F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC154,410$1.04M0.02%+46,87513F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC135,063$909K<0.01%-7,03613F-HRTimelineGroup
Teton Advisors, LLC130,000$874K0.61%013F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC122,418$823K<0.01%new13F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT118,779$798K0.01%new13F-HRTimeline
Informed Momentum Co LLC115,793$778K0.09%-32,60213F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC83,592$559K<0.01%+18,07713F-HRTimelineGroup
RBF Capital, LLC60,000$403K0.02%013F-HR/ATimeline
STATE STREET CORPin group STATE STREET CORP59,416$399K<0.01%-20,70013F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd48,582$326K0.01%new13F-HRTimelineGroup
Empowered Funds, LLC46,875$315K<0.01%new13F-HR/ATimeline
UBS Group AGin group UBS Group AG43,721$294K<0.01%+27,70113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC40,730$274K<0.01%+12,47913F-HRTimelineGroup
ALGERT GLOBAL LLC28,932$194K<0.01%+16,36213F-HR/ATimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP28,419$191K<0.01%013F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…27,112$182K<0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…26,599$179K<0.01%-14,96513F-HRTimelineGroup
Central Pacific Bank - Trust Division22,401$151K0.02%013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/20,280$136K<0.01%+18,06513F-HRTimelineGroup
SIMPLEX TRADING, LLC20,162$135K<0.01%+12,58913F-HRTimeline
OMERS ADMINISTRATION Corp19,300$130K<0.01%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…18,727$126K<0.01%new13F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP18,657$125K0.01%+17813F-HRTimeline
HRT FINANCIAL LP18,621$125K<0.01%+4,04113F-HRTimeline
Janney Montgomery Scott LLC17,516$118K<0.01%new13F-HRTimeline
Palumbo Wealth Management LLC15,233$102K0.02%new13F-HRTimeline
RAFFLES ASSOCIATES LP15,000$101K0.09%new13F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC14,439$97K<0.01%+56513F-HRTimelineGroup
D'Orazio & Associates, Inc.11,103$74.6K0.01%new13F-HRTimeline
DUDLEY CAPITAL MANAGEMENT, LLC11,000$73.9K0.03%new13F-HRTimeline
Hodges Capital Management Inc.10,910$73.3K0.01%new13F-HRTimeline
Schonfeld Strategic Advisors LLC10,300$69.2K<0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY9,581$64.4K<0.01%+2,71013F-HRTimelineGroup
GROUP ONE TRADING LLC6,662$44.8K<0.01%-3,61813F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…6,600$44.4K<0.01%+4,10013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC1,514$10.2K<0.01%013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA970$7K<0.01%new13F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP966$6.63K<0.01%+89113F-HRTimelineGroup
Farther Finance Advisors, LLC600$4.32K<0.01%+30013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.360$2.42K<0.01%-2513F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC260$1.75K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…141$948<0.01%new13F-HRTimelineGroup
Fortitude Family Office, LLC61$410<0.01%new13F-HRTimeline
SALEM INVESTMENT COUNSELORS INC25$168<0.01%new13F-HR/ATimeline
QUADRANT CAPITAL GROUP LLC18$121<0.01%013F-HR/ATimeline
SBI Securities Co., Ltd.5$34<0.01%+113F-HRTimeline