Ampco Pittsburgh Corp (AP) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

20,392,308Shares Outstanding

185,887Shares held by institutions

$1,412,741Value of institutional holdings

41.08%Institutional ownership %

1.16%Shares Changed QoQ

41No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 41 institutional investors hold a position in Ampco Pittsburgh Corp (NYSE:AP).

Institutional ownership in Ampco Pittsburgh edged up to 41.1% in December 2025, compared to 40.7% in September 2025.
Quarterly data indicates a 1.16% shift in institutional share volume, and the annual owner count reflects an increase of 10.81%.
The latest 13F cycle for Ampco Pittsburgh reveals that of 41 total investors, 23 funds grew their exposure, whereas 10 reduced theirs and 8 made no changes.
Collectively, institutional investors increased their stake in Ampco Pittsburgh to 8.38Mn shares as of December 2025, a change that is up by 96.17K shares quarter on quarter and up 38.46K shares year over year.
With 2.47Mn shares, GAMCO INVESTORS, INC. ET AL commands the largest institutional position in Ampco Pittsburgh as of December 31, 2025, equating to 12.12% of the company.
Among the most significant buyers of Ampco Pittsburgh during December 2025 were MARSHALL WACE, LLP (208.34K), Informed Momentum Co LLC (148.40K), SEI INVESTMENTS CO (90.33K), GAMCO INVESTORS, INC. ET AL (86.62K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (41.56K).
Leading sellers of Ampco Pittsburgh stock in December 2025 included Ancora Advisors LLC (597.22K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (20.00K), RENAISSANCE TECHNOLOGIES LLC (19.32K), CITADEL ADVISORS LLC (17.52K), VANGUARD GROUP INC (13.07K).
The top 10 institutional holders of Ampco Pittsburgh for the quarter ending December 2025 included GAMCO INVESTORS, INC. ET AL (2.47Mn), GABELLI FUNDS LLC (1.40Mn), AMERIPRISE FINANCIAL INC (1.16Mn), VANGUARD GROUP INC (654.63K), RENAISSANCE TECHNOLOGIES LLC (461.30K), Ancora Advisors LLC (354.10K), DIMENSIONAL FUND ADVISORS LP (334.97K), MARSHALL WACE, LLP (208.34K), BlackRock, Inc. (167.51K), Informed Momentum Co LLC (148.40K).

41 Institutional Holders

185,887 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
GAMCO INVESTORS, INC. ET AL	31 Dec, 2025	2,470,828	86,618	3.63%	$13,169,513.00
GABELLI FUNDS LLC	31 Dec, 2025	1,404,300	23,500	1.70%	$7,484,919.00
AMERIPRISE FINANCIAL INC	31 Dec, 2025	1,162,445	10,780	0.94%	$6,195,831.00
VANGUARD GROUP INC	31 Dec, 2025	654,635	-13,069	-1.96%	$3,489,204.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	461,302	-19,317	-4.02%	$2,458,740.00
Ancora Advisors LLC	31 Dec, 2025	354,100	-597,218	-62.78%	$1,887,353.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	334,973	-1,147	-0.34%	$1,785,546.00
MARSHALL WACE, LLP	31 Dec, 2025	208,342	208,342	0.00%	$1,110,462.00
BlackRock, Inc.	31 Dec, 2025	167,509	-1,729	-1.02%	$892,823.00
Informed Momentum Co LLC	31 Dec, 2025	148,395	148,395	0.00%	$790,945.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	142,099	0	0.00%	$757,603.00
Teton Advisors, LLC	31 Dec, 2025	130,000	21,500	19.82%	$692,900.00
RBF Capital, LLC	31 Dec, 2025	120,000	29,050	31.94%	$639,600.00
BRIDGEWAY CAPITAL MANAGEMENT, LLC	31 Dec, 2025	107,535	-20,000	-15.68%	$573,162.00
SEI INVESTMENTS CO	31 Dec, 2025	90,334	90,334	0.00%	$481,480.00
STATE STREET CORP	31 Dec, 2025	80,116	5,900	7.95%	$427,018.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	65,515	8,524	14.96%	$348.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	41,564	41,564	0.00%	$221,536.00
NORTHERN TRUST CORP	31 Dec, 2025	28,419	7,421	35.34%	$151,473.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	28,251	-3,597	-11.29%	$150,578.00

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