13F

Stock

Ampco-Pittsburg Corp

Ticker not mapped · held by 63 managers

Reported value

$67.8M

Holders

63

+23 new · −5 exited

Holders’ est. mark

$9.74M

Price effect on 37 books still in the name

Largest holder

$16.7M

GAMCO INVESTORS, INC. ET AL

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
GAMCO INVESTORS, INC. ET AL2.49M$16.7M$3.43MAdded$3.58M
GABELLI FUNDS LLC1.4M$9.41M$1.95MAdded$1.92M
AMERIPRISE FINANCIAL INC1.17M$7.88M$1.62MAdded$1.69M
WELLS FARGO & COMPANY/MN656K$4.41M$4Added$4.41M
VANGUARD CAPITAL MANAGEMENT LLC600.1K$4.03MHeld
Renaissance Technologies423.2K$2.84M$588.3KAdded$385.3K
DIMENSIONAL FUND ADVISORS LP355.4K$2.39M$465.3KAdded$602.8K
Huntleigh Advisors, Inc.230.5K$1.55MNew
AMERICAN CENTURY COMPANIES INC218.9K$1.47MNew
Meros Investment Management, LP214.8K$1.44MNew
BlackRock, Inc.203.1K$1.37M$232.8KAdded$472.2K
SEI INVESTMENTS CO184.3K$1.24M$125.6KAdded$757.3K
JANE STREET GROUP, LLC168.3K$1.13M$35.3KAdded$995.8K
MARSHALL WACE, LLP161.3K$1.08M$224.2KCut−$26.6K
MILLENNIUM MANAGEMENT LLC160.4K$1.08MNew
BRIDGEWAY CAPITAL MANAGEMENT, LLC154.4K$1.04M$149.5KAdded$464.5K
GEODE CAPITAL MANAGEMENT, LLC135.1K$908.5K$188.4KAdded$150.9K
Teton Advisors, LLC130K$873.6K$180.7KAdded$180.7K
O'SHAUGHNESSY ASSET MANAGEMENT, LLC122.4K$822.6KNew
RITHOLTZ WEALTH MANAGEMENT118.8K$798.2KNew
Informed Momentum Co LLC115.8K$778.1K$161KCut−$12.8K
VANGUARD FIDUCIARY TRUST CO72.8K$489.3KHeld
RBF Capital, LLC60K$403.2K$83.4KAdded$83.4K
State Street59.4K$399.3K$82.6KCut−$27.7K
XTX Topco Ltd48.6K$326.5KNew
Empowered Funds, LLC46.9K$315KNew
UBS Group AG43.7K$293.8K$22.3KAdded$208.4K
GOLDMAN SACHS GROUP INC40.7K$273.7K$39.3KAdded$123.1K
NORTHERN TRUST CORP28.4K$191K$39.5KAdded$39.5K
Hudson Bay Capital Management LP27.1K$182.2KNew
SUSQUEHANNA INTERNATIONAL GROUP, LLP26.6K$178.7K$37KCut−$42.8K
Central Pacific Bank - Trust Division22.4K$150.5K$31.1KAdded$31.1K
BANK OF AMERICA CORP /DE/20.3K$136.3K$3.08KAdded$124.5K
SIMPLEX TRADING, LLC20.2K$135.5K$10.5KAdded$95.1K
OMERS ADMINISTRATION Corp19.3K$129.7KNew
Brevan Howard Capital Management LP18.7K$125.8KNew
Palumbo Wealth Management LLC15.2K$102.4KNew
RAFFLES ASSOCIATES LP15K$100.8KNew
Citadel14.4K$97K$19.3KAdded$23.1K
D'Orazio & Associates, Inc.11.1K$74.6KNew
DUDLEY CAPITAL MANAGEMENT, LLC11K$73.9KNew
Hodges Capital Management Inc.10.9K$73.3KNew
Schonfeld Strategic Advisors LLC10.3K$69.2KNew
MORGAN STANLEY9.58K$64.4K$9.55KAdded$27.8K
Vanguard Global Advisers, LLC7.42K$49.9KHeld
GROUP ONE TRADING LLC6.66K$44.8K$9.26KCut−$10K
PNC Financial Services Group, Inc.6.6K$44.4K$3.47KAdded$31K
CITIGROUP INC1.51K$10.2K$2.1KAdded$2.1K
ROYAL BANK OF CANADA970$7KNew
JONES FINANCIAL COMPANIES LLLP966$6.63K$115Added$6.23K
Farther Finance Advisors, LLC600$4.32K$561Added$2.72K
OSAIC HOLDINGS, INC.360$2.42K$500Added$367
BARCLAYS PLC260$1.75KNew
Tower Research Capital LLC (TRC)141$948New
ACADIAN ASSET MANAGEMENT LLC83.6K$559$90Added$211
Fortitude Family Office, LLC61$410New
ALGERT GLOBAL LLC28.9K$194$17Added$127
SALEM INVESTMENT COUNSELORS INC25$168New
GSA CAPITAL PARTNERS LLP18.7K$125$26Added$27
HRT FINANCIAL LP18.6K$125$21Added$48
QUADRANT CAPITAL GROUP LLC18$121$25Added$25
Janney Montgomery Scott LLC17.5K$118New
SBI Securities Co., Ltd.5$34$6Added$13

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.