Atkore ATKR Institutional Ownership

NYSE ATKR

$94.75 +0.02 (+0.02%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

328 Institutions

Increased 189 57.6%

Unchanged 53 16.2%

Reduced 86 26.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

98.56%

▲+2.73 pp QoQ

Shares Held by Institutions

33.28Mn

of 33.77Mn outstanding

▲+8.01% QoQ

Shares Outstanding

33.77Mn

485.23K held outside 13F filers

Institutional Investors

328

filed 13F for Jun 2026

▲+26 vs prior quarter

Net Shares Added (QoQ)

+2.47Mn

accumulated since last quarter

Value of Holdings

$3.15Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Atkore Inc. (NYSE:ATKR) has 328 institutional investors with active 13F positions as of June 2026.

These investors collectively held 98.6% of Atkore's outstanding shares in June 2026, up from 95.8% in March 2026.
They increased total shares held in Atkore by 8.01% from the prior quarter, while the number of investors in ATKR increased 11.56% year over year.
Activity in ATKR broke down as 189 buyers, 86 sellers, and 53 unchanged among 328 total holders.
Altogether, these fund groups held 33.28Mn shares in ATKR by June 2026, up by 2.47Mn shares quarter on quarter, and up 896.2K shares year over year.
BlackRock, Inc. holds the largest position in ATKR at 3.12Mn shares as of June 30, 2026, or 9.23% of shares outstanding.
Leading buyers of Atkore shares for the quarter ending June 2026 were T. Rowe Price Investment Management, Inc. (647.88K), Irenic Capital Management LP (493.64K), BlackRock, Inc. (489.43K), Sixth Street Partners Management Company, L.P. (453.96K), Boston Partners (367.81K).
Top sellers of ATKR stock for the quarter ending June 2026 included Gates Capital Management, Inc. (975.53K), FIRST TRUST ADVISORS LP (693.78K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (215.9K), CANYON CAPITAL ADVISORS LLC (165.3K), CANADA PENSION PLAN INVESTMENT BOARD (144.26K).
According to Business Quant data, leading holders of ATKR for June 2026 are BlackRock, Inc. (3.12Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.12Mn), AMERICAN CENTURY COMPANIES INC (1.78Mn), Gates Capital Management, Inc. (1.71Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.52Mn), DIMENSIONAL FUND ADVISORS LP (1.3Mn), LSV ASSET MANAGEMENT (1.09Mn), State Street Corp (906.42K), GEODE CAPITAL MANAGEMENT, LLC (902.49K), EARNEST PARTNERS LLC (772.29K).

Form 13F Holdings

328 Institutional Holders

Report period 30 Jun, 2026

Total shares held 33.28Mn

Of outstanding 98.56%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	3,116,222	9.23%	▲489,431	+18.63%	$236.96Mn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	2,122,380	6.29%	▲31,911	+1.53%	$161.39Mn
3	AMERICAN CENTURY COMPANIES INC	0000748054	1,775,158	5.26%	▲336,042	+23.35%	$134.98Mn
4	Gates Capital Management, Inc.	0001312908	1,710,192	5.06%	▼975,526	-36.32%	$130.04Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,524,252	4.51%	▲9,142	+0.60%	$115.90Mn
6	DIMENSIONAL FUND ADVISORS LP	0000354204	1,299,786	3.85%	▲71,795	+5.85%	$98.83Mn
7	LSV ASSET MANAGEMENT	0001050470	1,093,590	3.24%	▲41,729	+3.97%	$83.16K
8	State Street Corp	0000093751	906,421	2.68%	▲71,265	+8.53%	$68.92Mn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	902,486	2.67%	▲47,755	+5.59%	$68.64Mn
10	EARNEST PARTNERS LLC	0001102578	772,294	2.29%	▼5,611	-0.72%	$58.73Mn
11	Hill City Capital, LP	0001837343	724,106	2.14%	▼4,100	-0.56%	$55.06Mn
12	T. Rowe Price Investment Management, Inc.	0001897612	647,881	1.92%	▲647,881	0.00%	$49.27K
13	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	0001705339	575,607	1.70%	▲42,615	+8.00%	$43.77Mn
14	HARDING LOEVNER LP	0000928196	567,192	1.68%	▼137,670	-19.53%	$43.13Mn
15	FIRST TRUST ADVISORS LP	0001125816	533,063	1.58%	▼693,777	-56.55%	$40.53Mn
16	Jpmorgan Chase & Co	0000019617	520,864	1.54%	▲270,556	+108.09%	$39.24Mn
17	JACOBS LEVY EQUITY MANAGEMENT, INC	0000884414	519,275	1.54%	▲175,986	+51.26%	$39.49Mn
18	Irenic Capital Management LP	0001929389	507,613	1.50%	▲493,636	+3,531.77%	$38.60Mn
19	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	482,239	1.43%	▼215,895	-30.92%	$36.67Mn
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	453,964	1.34%	▲36,320	+8.70%	$34.52Mn

Showing 1 to 20 of 328 holders