OBERWEIS ASSET MANAGEMENT INC/

Position in ACA — Arcosa, Inc.

CIK 937886 LISLE, IL

Position in ACA

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$28,413,678

+$4,853,166 QoQ

Shares Held

267,700

+20.8% QoQ

Ownership

0.545%

of shares outstanding

% of Portfolio

0.84%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2020

8 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Mar 31, 2026

OBERWEIS ASSET MANAGEMENT INC/ holds $139,277,075 across 5 Engineering & Construction names. ACA ranks #3 (20.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ECG	Everus Construction Group, Inc.	326,533	$38,550,485
2	TPC	Tutor Perini Corp	393,900	$30,405,141
3	ACA	Arcosa, Inc. This page	267,700	$28,413,678
4	PRIM	Primoris Services Corp	166,100	$23,758,944
5	AGX	Argan Inc	33,322	$18,148,827

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$28,413,678	267,700	+20.8%	Shares	Sole	2026-05-15
2025-12-31	$23,560,512	221,600	0.0%	Shares	Sole	2026-02-17
2025-09-30	$20,766,136	221,600	0.0%	Shares	Sole	2025-11-17
2025-06-30	$19,214,936	221,600	+9.2%	Shares	Sole	2025-08-14
2025-03-31	$15,655,360	203,000	0.0%	Shares	Sole	2025-05-15
2024-12-31	$19,638,220	203,000	+4313.0%	Shares	Sole	2025-02-14
2020-12-31	$252,678	4,600	0.0%	Shares	Sole	2021-02-16
2020-09-30	$202,814	4,600	—	Shares	Sole	2020-11-16
No filing history on record for this holder in this stock.