$ATKR

$94.96 +$0.04 (0.04%) Close

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

Ownership

13F as of Q2 2026 · 33.8M shares outstanding

Who owns ATKR?

By type of holder

Institutions 97.3% Insiders 0.0% Everyone else 2.7%

Concentration Top 10 holders own 44.4%

BlackRock, Inc. 9.2% · Gates Capital Management, Inc. 5.1%

Institutional ownership

97.3%

+1.1 pts vs last qtr

Institutional holders

324

+21 vs last qtr

Net shares bought

+377.1K

by institutions in Q2 2026

New / sold out

65 / 44

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

T. Rowe Price Investment Management, Inc. NEW +647.9K
Irenic Capital Management LP +493.6K

Biggest sellers in Q2 2026

Gates Capital Management, Inc. −975.5K
Coliseum Capital Management, LLC SOLD OUT −947.1K

Who is planning to sell?

Notices of proposed sale, last 12 months

$609K

5 notices from 3 people

Shares covered

8.4K

0.02% of the company

Arranged in advance

26%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Wilbert W James JR Director $243K
Justin A Kershaw Director $206K

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

−45.8%

−6.58% a year

Each share's claim on the business

+84.5%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$2.07B vs $173M

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+ years59% 3–5 years8% 1–3 years14% Under 1 year19%

Quarterly turnover

15.0%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ATKR on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	3.1M	9.23%	+489.4K (+18.6%)	≤2021	0.0%
Shares held by quarter Peak holding3.1M (Q4'24) Change over 8 quarters+62.7K Share of the company9.230% BlackRock, Inc.'s full portfolio →
GC Gates Capital Management, Inc.	1.7M	5.06%	−975.5K (−36.3%)	2022	3.1%
Shares held by quarter Peak holding3.3M (Q1'25) Change over 8 quarters−301.4K Share of the company5.060% Gates Capital Management, Inc.'s full portfolio →

BlackRock, Inc.

3.1M

% of company

9.23%

Change vs last qtr

+489.4K (+18.6%)

Held since

≤2021

Gates Capital Management, Inc.

1.7M

% of company

5.06%

Change vs last qtr

−975.5K (−36.3%)

Held since

2022

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting ATKR on Form N-PORT; together they hold 41.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AU Avantis U.S. Small Cap Value ETF American Century ETF Trust	$115M	1.4M	4.10%	0.42%	May 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$81.7M	1.1M	3.18%	0.00%	June 30, 2026

Avantis U.S. Small Cap Value ETF

American Century ETF Trust

Position value

$115M

% of company

4.10%

% of the fund

0.42%

As of

May 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$81.7M

% of company

3.18%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

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

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