RENAISSANCE TECHNOLOGIES LLC

Position in AP — Ampco Pittsburgh Corp

CIK 1037389 NEW YORK, NY

Position in AP

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$3,584,724

+$740,693 QoQ

Shares Held

414,419

-2.1% QoQ

Ownership

2.01%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

of 84 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

RENAISSANCE TECHNOLOGIES LLC holds $77,655,748 across 9 Metal Fabrication names. AP ranks #5 (4.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	PRLB	Proto Labs Inc	469,251	$38,248,649
2	ESAB	ESAB Corp	155,900	$15,376,417
3	MLI	Mueller Industries Inc	220,400	$13,546,886
4	WOR	Worthington Enterprises, Inc.	73,800	$3,967,488
5	AP	Ampco Pittsburgh Corp This page	414,419	$3,584,724
6	MEC	Mayville Engineering Company, Inc.	28,000	$1,048,880
7	TG	Tredegar Corp	112,300	$893,908
8	RYZ	Ryerson Holding Corp	35,502	$873,704

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$3,584,724	414,419	-2.1%	Shares	Sole	2026-08-13
2026-03-31	$2,844,031	423,219	-8.3%	Shares	Sole	2026-05-14
2025-12-31	$2,458,739	461,302	-4.0%	Shares	Sole	2026-02-12
2025-09-30	$1,100,617	480,619	+7.1%	Shares	Sole	2025-11-13
2025-06-30	$1,328,418	448,790	+3.7%	Shares	Sole	2025-08-13
2025-03-31	$939,000	432,719	-0.9%	Shares	Sole	2025-05-14
2024-12-31	$912,533	436,619	-3.7%	Shares	Sole	2025-02-13
2024-09-30	$906,838	453,419	-18.5%	Shares	Sole	2024-11-13
2024-06-30	$428,424	556,396	+12.7%	Shares	Sole	2024-08-09
2024-03-31	$1,071,552	493,803	-3.8%	Shares	Sole	2024-05-13
2023-12-31	$1,401,057	513,208	+8.1%	Shares	Sole	2024-02-13
2023-09-30	$1,249,136	474,957	-1.5%	Shares	Sole	2023-11-14
2023-06-30	$1,534,092	482,419	-1.2%	Shares	Sole	2023-08-11
2023-03-31	$1,195,791	488,078	-1.2%	Shares	Sole	2023-05-12
2022-12-31	$1,239,503	493,826	-1.6%	Shares	Sole	2023-02-13
2022-09-30	$1,847,363	502,001	-4.7%	Shares	Sole	2022-11-14
2022-06-30	$2,038,332	526,701	-3.6%	Shares	Sole	2022-08-12
2022-03-31	$3,447,790	546,401	-6.0%	Shares	Sole	2022-05-13
2021-12-31	$2,907,505	581,501	-0.9%	Shares	Sole	2022-02-11
2021-09-30	$2,758,904	587,001	+3.0%	Shares	Sole	2021-11-12
2021-06-30	$3,458,085	569,701	-12.8%	Shares	Sole	2021-08-13
2021-03-31	$4,409,781	653,301	-10.3%	Shares	Sole	2021-05-13
2020-12-31	$3,990,541	728,201	+20.4%	Shares	Sole	2021-02-10
2020-09-30	$1,990,199	604,924	+15.7%	Shares	Sole	2020-11-13
2020-06-30	$1,605,683	523,024	+4.5%	Shares	Sole	2020-08-13
2020-03-31	$1,251,560	500,624	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.