RENAISSANCE TECHNOLOGIES LLC

Position in APT — Alpha Pro Tech Ltd

CIK 1037389 NEW YORK, NY

Position in APT

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$2,415,679

+$93,684 QoQ

Shares Held

544,072

+4.0% QoQ

Ownership

5.33%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Industrials · as of Mar 31, 2026

RENAISSANCE TECHNOLOGIES LLC holds $437,132,305 across 23 Building Products & Equipment names. APT ranks #16 (0.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TT	Trane Technologies plc	198,948	$82,909,589
2	MAS	Masco Corp /De/	1,134,114	$68,466,462
3	JCI	Johnson Controls International plc	503,414	$65,922,063
4	CSL	Carlisle Companies Inc	161,460	$53,866,285
5	GFF	Griffon Corp	547,351	$39,781,470
6	ARLO	Arlo Technologies, Inc.	2,049,418	$29,163,218
7	AWI	Armstrong World Industries Inc	118,700	$19,561,760
8	BLDR	Builders FirstSource, Inc.	220,241	$18,132,441

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,415,679	544,072	+4.0%	Shares	Sole	2026-05-14
2025-12-31	$2,321,995	522,972	-2.4%	Shares	Sole	2026-02-12
2025-09-30	$2,566,362	535,775	-0.1%	Shares	Sole	2025-11-13
2025-06-30	$2,514,191	536,075	-0.6%	Shares	Sole	2025-08-13
2025-03-31	$2,697,795	539,559	-4.6%	Shares	Sole	2025-05-14
2024-12-31	$2,991,362	565,475	-4.2%	Shares	Sole	2025-02-13
2024-09-30	$3,364,567	590,275	-6.7%	Shares	Sole	2024-11-13
2024-06-30	$3,478,062	632,375	+1.3%	Shares	Sole	2024-08-09
2024-03-31	$3,894,128	624,059	+6.0%	Shares	Sole	2024-05-13
2023-12-31	$3,113,519	588,567	+1.2%	Shares	Sole	2024-02-13
2023-09-30	$2,523,731	581,505	-2.7%	Shares	Sole	2023-11-14
2023-06-30	$2,377,994	597,486	-4.8%	Shares	Sole	2023-08-11
2023-03-31	$2,610,254	627,465	+11.8%	Shares	Sole	2023-05-12
2022-12-31	$2,257,081	561,463	-5.3%	Shares	Sole	2023-02-13
2022-09-30	$2,402,310	593,163	-8.7%	Shares	Sole	2022-11-14
2022-06-30	$2,897,942	649,763	-0.0%	Shares	Sole	2022-08-12
2022-03-31	$2,730,264	650,063	+6.4%	Shares	Sole	2022-05-13
2021-12-31	$3,648,643	611,163	+8.8%	Shares	Sole	2022-02-11
2021-09-30	$3,779,991	561,663	+13.5%	Shares	Sole	2021-11-12
2021-06-30	$4,242,689	495,063	+6.1%	Shares	Sole	2021-08-13
2021-03-31	$4,553,654	466,563	-38.0%	Shares	Sole	2021-05-13
2020-12-31	$8,393,318	752,764	-17.1%	Shares	Sole	2021-02-10
2020-09-30	$13,417,520	907,816	-5.3%	Shares	Sole	2020-11-13
2020-06-30	$16,969,273	958,716	-7.8%	Shares	Sole	2020-08-13
2020-03-31	$12,564,601	1,040,116	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.