Ampco-Pittsburgh Corporation (AP) Ownership

Institutions
Mutual Funds

Institutional Ownership

Gamco Investors, Inc. Et Al is the biggest individual institutional holder of Ampco-Pittsburgh Corporation (AP), owning a total of 2.5 million shares. Combined, the top 40 institutional holders of AP own 51.76% of the company with a total of 10.3 million shares.

In the latest ownership report on December 31st 2024, the top 40 institutional holders decreased their combined ownership of AP by 11 thousand shares. 5 institutions bought 54,929 total additional shares and increased their ownership by an average of 0.23%. However 6 institutions sold 65,628 total shares and decreased their ownership by an average of 11.9%.

Overall this is a negative sign as the number of shares owned by the top 20 institutional holders of Ampco-Pittsburgh Corporation decreased by a net total of -10,699 in the latest quarter.

Institution Ownership Chart

Latest Institutional Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Gamco Investors, Inc. Et Al	12.296%	0.550%	2,456,720	13,446	2024-12-31
Gabelli Funds LLC	7.046%	0.000%	1,407,800	0	2024-12-31
Ameriprise Financial Inc	5.427%	0.465%	1,084,403	5,020	2024-12-31
Ancora Advisors LLC	5.348%	0.000%	1,068,531	0	2024-12-31
Vanguard Group Inc	3.125%	0.000%	624,432	0	2024-12-31
Renaissance Technologies Corp	2.185%	-3.705%	436,619	-16,800	2024-12-31
Dimensional Fund Advisors, Inc.	1.463%	-7.158%	292,310	-22,535	2024-12-31
BlackRock Inc	0.821%	0.132%	164,112	216	2024-12-31
Geode Capital Management, LLC	0.761%	0.000%	152,111	0	2024-12-31
Teton Advisors Inc	0.561%	-1.060%	112,000	-1,200	2024-12-31
Bridgeway Capital Management, LLC	0.513%	-8.108%	102,535	-9,047	2024-12-31
RBF LLC	0.455%	0.000%	90,950	0	2024-12-31
State Street Corp	0.372%	0.000%	74,216	0	2024-12-31
Hunter Associates Inc.	0.125%	-34.211%	25,000	-13,000	2024-12-31
Northern Trust Corp	0.109%	0.000%	21,690	0	2024-12-31
T. Rowe Price Associates, Inc.	0.108%	0.000%	21,600	0	2024-12-31
TWO SIGMA SECURITIES, LLC	0.095%	0.000%	18,973	18,973	2024-12-31
Susquehanna International Group, LLP	0.087%	0.000%	17,274	17,274	2024-12-31
UBS Group AG	0.080%	0.000%	16,000	0	2024-12-31
Two Sigma Investments LLC	0.074%	-17.142%	14,723	-3,046	2024-12-31

Top Institutions

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Gamco Investors, Inc. Et Al	12.296%	0.550%	2,456,720	13,446	2024-12-31
Gabelli Funds LLC	7.046%	0.000%	1,407,800	0	2024-12-31
Rutabaga Capital Management Llc	5.897%	18.743%	1,144,269	180,618	2022-09-30
Ameriprise Financial Inc	5.427%	0.465%	1,084,403	5,020	2024-12-31
Ancora Advisors LLC	5.348%	0.000%	1,068,531	0	2024-12-31
Vanguard Group Inc	3.125%	0.000%	624,432	0	2024-12-31
Renaissance Technologies Corp	2.185%	-3.705%	436,619	-16,800	2024-12-31
Dimensional Fund Advisors, Inc.	1.463%	-7.158%	292,310	-22,535	2024-12-31
Auto-Owners Insurance Co	1.219%	0.000%	242,100	0	2023-09-30
BlackRock Inc	0.821%	0.132%	164,112	216	2024-12-31
Geode Capital Management, LLC	0.761%	0.000%	152,111	0	2024-12-31
Gator Capital Management, LLC	0.730%	63,397.800%	146,680	146,449	2024-03-31
Acadian Asset Management LLC	0.572%	0.000%	114,997	0	2024-03-31
Teton Advisors Inc	0.561%	-1.060%	112,000	-1,200	2024-12-31
Bridgeway Capital Management, LLC	0.513%	-8.108%	102,535	-9,047	2024-12-31
RBF LLC	0.455%	0.000%	90,950	0	2024-12-31
Royce & Associates, LP	0.407%	0.000%	79,002	0	2022-09-30
State Street Corp	0.372%	0.000%	74,216	0	2024-12-31
Tejara Capital Ltd	0.233%	0.000%	45,293	0	2023-03-31
State Street Corporation	0.192%	0.000%	38,516	0	2024-03-31
Perritt Capital Management Inc.	0.192%	0.000%	38,505	0	2024-03-31
Royal Bank of Canada	0.171%	1.529%	33,200	500	2022-09-30
Easterly Investment Partners.	0.155%	0.000%	30,000	30,000	2022-12-31
Citadel Advisors Llc	0.130%	1.192%	25,812	304	2023-09-30
Hunter Associates Inc.	0.125%	-34.211%	25,000	-13,000	2024-12-31
James Investment Research, Inc.	0.114%	0.000%	22,146	0	2022-09-30
Goss Wealth Management LLC	0.114%	15.669%	22,146	3,000	2022-06-30
Virtu Financial LLC	0.109%	-19.558%	21,906	-5,326	2024-09-30
Millennium Management LLC	0.110%	0.000%	21,872	21,872	2023-03-31
Northern Trust Corp	0.109%	0.000%	21,690	0	2024-12-31
T. Rowe Price Associates, Inc.	0.108%	0.000%	21,600	0	2024-12-31
TWO SIGMA SECURITIES, LLC	0.095%	0.000%	18,973	18,973	2024-12-31
Raymond James Finl Svs Advisors, Inc.	0.092%	0.000%	18,182	0	2023-09-30
Susquehanna International Group, LLP	0.087%	0.000%	17,274	17,274	2024-12-31
UBS Group AG	0.080%	0.000%	16,000	0	2024-12-31
XTX Topco Ltd	0.076%	0.000%	15,267	15,267	2024-06-30
SIMPLEX TRADING, LLC	0.073%	771.116%	14,748	13,055	2024-09-30
Two Sigma Investments LLC	0.074%	-17.142%	14,723	-3,046	2024-12-31
Prudential Financial Inc	0.063%	12.500%	12,600	1,400	2024-03-31
Two Sigma Advisers, LLC	0.056%	0.000%	11,300	11,300	2024-09-30

Mutual Fund Ownership

1290 VT GAMCO Small Company Value IB is the biggest individual fund holder of Ampco-Pittsburgh Corporation (AP), owning a total of 1 million shares. Combined, the top 29 mutual fund holders of AP own 32.83% of the company with a total of 6.5 million shares.

In the latest ownership report on February 28th 2025, the top 29 fund holders increased their combined ownership of AP by 146 shares. 1 funds bought 1,346 total additional shares and increased their ownership by an average of 0.17%. However 1 funds sold 1,492 total shares and decreased their ownership by an average of 0.73%.

Overall this is a negative sign as the number of shares owned by the top 20 mutual funds holding Ampco-Pittsburgh Corporation decreased by a net total of -146 in the latest report.

Mutual Funds Chart

Latest Mutual Fund Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Columbia Small Cap Value I A	3.892%	0.173%	777,707	1,346	2025-02-28
Vanguard Total Stock Mkt Idx Inv	2.187%	0.000%	436,953	0	2025-02-28
Columbia VP Small Cap Value 1	1.017%	-0.729%	203,228	-1,492	2025-02-28
Vanguard Institutional Extnd Mkt Idx Tr	0.901%	0.000%	180,060	0	2025-02-28
Dimensional US Targeted Value ETF	0.404%	0.000%	80,760	0	2025-02-28

Top Mutual Funds

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
1290 VT GAMCO Small Company Value IB	4.880%	-0.307%	975,000	-3,000	2025-01-31
Columbia Small Cap Value I A	3.892%	0.173%	777,707	1,346	2025-02-28
Columbia Small Cap Value I	3.886%	7.075%	776,361	51,300	2025-01-31
Vanguard Total Stock Mkt Idx Inv	2.187%	0.000%	436,953	0	2025-02-28
Gabelli Equity Trust	2.062%	0.000%	412,000	0	2024-12-31
Vanguard Instl Ttl Stck Mkt Idx Tr	1.843%	0.000%	366,153	0	2023-03-31
GAMCO SMID Cap Value	1.221%	0.000%	244,000	0	2024-12-31
Gabelli Dividend & Income	1.201%	0.000%	240,000	0	2024-12-31
Columbia VP Small Cap Value 1	1.017%	-0.729%	203,228	-1,492	2025-02-28
Gabelli Small Cap Growth AAA	1.001%	0.000%	200,000	0	2024-12-31
Gabelli ABC AAA	1.001%	0.000%	200,000	0	2024-12-31
Vanguard Institutional Extnd Mkt Idx Tr	0.901%	0.000%	180,060	0	2025-02-28
Vanguard Extended Market Index Investor	0.865%	8.088%	171,738	12,851	2023-08-31
DFA US Core Equity 1 I	0.804%	0.000%	159,616	0	2024-02-29
Gabelli Global Mini Mites I	0.611%	0.000%	122,000	0	2024-12-31
TETON Westwood Mighty Mites AAA	0.561%	-1.060%	112,000	-1,200	2024-12-31
Gabelli Global Small & Mid Cap Value Tru	0.511%	0.000%	102,000	0	2024-12-31
1290 GAMCO Small/Mid Cap Value I	0.451%	0.000%	90,000	0	2025-01-31
Fidelity Extended Market Index	0.412%	-1.496%	82,375	-1,251	2025-01-31
Dimensional US Targeted Value ETF	0.404%	0.000%	80,760	0	2025-02-28
Royce Micro Cap Trust	0.407%	0.000%	79,002	0	2022-09-30
Fidelity® Extended Market Index	0.397%	0.000%	78,920	0	2023-10-31
Perritt MicroCap Opportunities Investor	0.391%	16.170%	75,815	10,553	2023-03-31
DFA US Core Equity 2 I	0.383%	0.000%	75,492	0	2024-01-31
Gabelli Asset Mgt Sm-Cap Val	0.349%	0.000%	69,638	0	2024-12-31
DFA US Targeted Value I	0.343%	-29.495%	68,855	-28,805	2024-07-31
Bridgeway Ultra-Small Company Market	0.331%	-10.838%	66,200	-8,047	2024-12-31
Bridgeway Ultra-Small Company	0.291%	0.000%	58,032	0	2024-06-30
Gabelli Capital Asset	0.225%	0.000%	45,000	0	2024-12-31