$ACA

$149.16 +$0.13 (0.09%) Live

$ACA Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 49.1M shares outstanding

Who owns ACA?

By type of holder

Institutions 91.6% Insiders 0.0% Everyone else 8.4%

Concentration Top 10 holders own 47.2%

BlackRock, Inc. 17.1% · Vanguard Portfolio Management LLC 5.7%

Institutional ownership

91.6%

-1.2 pts vs last qtr

Institutional holders

425

+53 vs last qtr

Net shares bought

−567.9K

by institutions in Q2 2026

New / sold out

102 / 49

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Balyasny Asset Management L.P. NEW +839.0K
BlackRock, Inc. +794.5K

Biggest sellers in Q2 2026

T. Rowe Price Investment Management, Inc. −1.5M
Capital World Investors −1.5M

Who is planning to sell?

Notices of proposed sale, last 12 months

$1.72M

2 notices from 1 person

Shares covered

14.8K

0.03% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Jesse E Collins Officer $1.72M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+0.4%

+0.05% a year

Each share's claim on the business

−0.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$60.2M vs $176M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years72% 3–5 years6% 1–3 years5% Under 1 year17%

Quarterly turnover

18.0%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ACA on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	8.4M	17.13%	+794.5K (+10.4%)	≤2021	0.0%
Shares held by quarter Peak holding8.4M (Q2'26) Change over 8 quarters+931.2K Share of the company17.130% BlackRock, Inc.'s full portfolio →
VP Vanguard Portfolio Management LLC	2.8M	5.74%	−40.5K (−1.4%)	≤2021	0.0%
Shares held by quarter Peak holding2.9M (Q1'26) Change over 8 quarters+2.8M Share of the company5.740% Vanguard Portfolio Management LLC's full portfolio →

BlackRock, Inc.

8.4M

% of company

17.13%

Change vs last qtr

+794.5K (+10.4%)

Held since

≤2021

Vanguard Portfolio Management LLC

2.8M

% of company

5.74%

Change vs last qtr

−40.5K (−1.4%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Arcosa, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ACA on Form N-PORT; together they hold 56.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Small-Cap ETF iShares Trust	$430M	3.0M	6.02%	0.39%	June 30, 2026
SW SMALLCAP World Fund Inc SMALLCAP World Fund Inc	$265M	1.8M	3.71%	0.28%	June 30, 2026

iShares Core S&P Small-Cap ETF

iShares Trust

Position value

$430M

% of company

6.02%

% of the fund

0.39%

As of

June 30, 2026

SMALLCAP World Fund Inc

Position value

$265M

% of company

3.71%

% of the fund

0.28%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Arcosa, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
CJ Collins Jesse E. Jr. Insider	17.3K	0.04%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.040% Collins Jesse E. Jr.'s insider activity →

Collins Jesse E. Jr.

Insider

17.3K

% of company

0.04%

Change vs last qtr

—

Held since

—

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