Atkore Inc.: which funds bought and sold

Institutions that bought and sold Atkore shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 179 institutions that filed 13F reports for both quarters added to or opened positions in Atkore, and 126 cut or closed them. Together they added a net 417K shares, +1.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 31K shares (−0.2%); index fund managers were net buyers of 711K shares (+8.0%). 61 opened a new position and 39 sold out entirely.

Bought, Q2 2026 179 institutions, 61 of them new holders Sold, Q2 2026 126 institutions, 39 of them sold out

Net change, all compared +417K shares (+1.3%)

Net change, active managers −31K shares (−0.2%), 36 bought, 31 sold

Buyers versus sellers

institutions compared, 359

179 bought 54 126 sold

Active managers and hedge funds 36 bought · 31 sold · −31K

Index fund managers 10 bought · 1 sold · +711K

Other institutions 133 bought · 94 sold · −263K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
T. Rowe Price Investment Management, Inc. Active manager	+648K New position	648K	$49.3M
Irenic Capital Management LP Hedge fund	+494K +3531.8%	508K	$38.6M
Blackrock, Inc. Index funds	+489K +18.6%	3.1M	$237M
Boston Partners Active manager	+368K New position	368K	$27.9M
American Century Companies Inc Active manager	+336K +23.4%	1.8M	$135M
Jpmorgan Chase & Co	+271K +108.1%	521K	$39.2M
Jacobs Levy Equity Management, Inc Active manager	+176K +51.3%	519K	$39.5M
Trexquant Investment LP Hedge fund	+113K New position	113K	$8.6M
Aventail Capital Group, LP	+95K New position	95K	$7.2M
Towle & Co	+86K New position	86K	$6.5M
D. E. Shaw & Co., Inc. Hedge fund	+84K +137.4%	145K	$11.1M
PDT Partners, LLC Hedge fund	+75K +64.6%	191K	$14.5M
Dimensional Fund Advisors LP	+72K +5.8%	1.3M	$98.8M
State Street Corp Index funds	+71K +8.5%	906K	$68.9M
Empowered Funds, LLC	+70K +52.8%	204K	$15.5M
Allianz Asset Management Gmbh	+60K +49.1%	182K	$13.8M
Edgestream Partners, L.P. Hedge fund	+57K New position	57K	$4.3M
Engineers Gate Manager LP Hedge fund	+50K +723.5%	57K	$4.3M
Point72 Asset Management, L.P. Hedge fund	+50K New position	50K	$3.8M
Two Sigma Investments, LP Hedge fund	+49K +13.9%	402K	$30.6M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
T. Rowe Price Investment Management, Inc. Active manager	+648K New position	648K	$49.3M
Irenic Capital Management LP Hedge fund	+494K +3531.8%	508K	$38.6M
Boston Partners Active manager	+368K New position	368K	$27.9M
American Century Companies Inc Active manager	+336K +23.4%	1.8M	$135M
Jacobs Levy Equity Management, Inc Active manager	+176K +51.3%	519K	$39.5M
Trexquant Investment LP Hedge fund	+113K New position	113K	$8.6M
D. E. Shaw & Co., Inc. Hedge fund	+84K +137.4%	145K	$11.1M
PDT Partners, LLC Hedge fund	+75K +64.6%	191K	$14.5M
Edgestream Partners, L.P. Hedge fund	+57K New position	57K	$4.3M
Engineers Gate Manager LP Hedge fund	+50K +723.5%	57K	$4.3M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Gates Capital Management, Inc. Hedge fund	−976K −36.3%	1.7M	$130M
Coliseum Capital Management, LLC Hedge fund	−947K Sold out	0	—
First Trust Advisors LP	−694K −56.5%	533K	$40.5M
Arrowstreet Capital, Limited Partnership Hedge fund	−216K −30.9%	482K	$36.7M
Canyon Capital Advisors LLC Hedge fund	−165K −54.2%	140K	$10.6M
Canada Pension Plan Investment Board	−144K −58.4%	103K	$7.8M
Harding Loevner LP Active manager	−138K −19.5%	567K	$43.1M
Pacer Advisors, Inc.	−133K −97.3%	3,685	$280,000
Deutsche Bank Ag\	−120K −76.7%	36K	$2.8M
Voloridge Investment Management, LLC Hedge fund	−86K Sold out	0	—
Citadel Advisors LLC Hedge fund	−65K Sold out	0	—
Allianz Se	−62K Sold out	0	—
Edentree Asset Management Ltd	−53K −97.2%	1,550	$117,862
Man Group PLC Hedge fund	−52K −34.4%	99K	$7.5M
DNB Asset Management As	−36K −21.5%	131K	$9.9M
SG Americas Securities, LLC	−35K −89.5%	4,124	$314,000
Omers Administration Corp	−35K Sold out	0	—
Hudson Bay Capital Management LP Hedge fund	−35K Sold out	0	—
Castleknight Management LP Hedge fund	−35K −82.2%	7,500	$570,300
Lazard Asset Management LLC Active manager	−33K Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Gates Capital Management, Inc. Hedge fund	−976K −36.3%	1.7M	$130M
Coliseum Capital Management, LLC Hedge fund	−947K Sold out	0	—
Arrowstreet Capital, Limited Partnership Hedge fund	−216K −30.9%	482K	$36.7M
Canyon Capital Advisors LLC Hedge fund	−165K −54.2%	140K	$10.6M
Harding Loevner LP Active manager	−138K −19.5%	567K	$43.1M
Voloridge Investment Management, LLC Hedge fund	−86K Sold out	0	—
Citadel Advisors LLC Hedge fund	−65K Sold out	0	—
Man Group PLC Hedge fund	−52K −34.4%	99K	$7.5M
Hudson Bay Capital Management LP Hedge fund	−35K Sold out	0	—
Castleknight Management LP Hedge fund	−35K −82.2%	7,500	$570,300

New positions

largest by value

Institution	Shares	Value June 30, 2026
T. Rowe Price Investment Management, Inc.Active manager	648K	$49.3M
Boston PartnersActive manager	368K	$27.9M
Trexquant Investment LPHedge fund	113K	$8.6M
Aventail Capital Group, LP	95K	$7.2M
Towle & Co	86K	$6.5M
Edgestream Partners, L.P.Hedge fund	57K	$4.3M
Point72 Asset Management, L.P.Hedge fund	50K	$3.8M
Algert Global LLCHedge fund	44K	$3.3M
Centerbook Partners LPHedge fund	28K	$2.1M
Exoduspoint Capital Management, LPHedge fund	24K	$1.8M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Coliseum Capital Management, LLCHedge fund	947K	$55.8M
Voloridge Investment Management, LLCHedge fund	86K	$5M
Citadel Advisors LLCHedge fund	65K	$3.8M
Allianz Se	62K	$3.7M
Omers Administration Corp	35K	$2.1M
Hudson Bay Capital Management LPHedge fund	35K	$2.1M
Lazard Asset Management LLCActive manager	33K	$2M
Vident Advisory, LLC	19K	$1.1M
Cambridge Investment Research Advisors, Inc.	15K	$899,000
Murchinson Ltd.	15K	$883,650

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 324
Ten largest holders: 46.3%
Index fund managers: 29.3%
Active managers and hedge funds: 38.7%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	36	31	16	7	−31K	−0.2%
Index fund managers	10	1	1	0	+711K	+8.0%
Other institutions	133	94	44	32	−263K	−2.5%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Atkore.

Only managers that filed a holdings report for both quarters are compared (359 here). 9 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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