Who owns Atkore Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ATKR from SEC Form 13F filings across 326 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 326 institutions disclosed 32.9M shares of Atkore Inc. worth $2.50B — about 97.4% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
326
13F holders
$2.50B
value, 2026 filers
97.4%
of shares outstanding (32.9M sh)
68
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ATKR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.1M | $237.0M | 0.0% | 9.2% | +18.6% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.1M | $161.4M | 0.0% | 6.3% | +1.5% |
| 3 | AMERICAN CENTURY COMPANIES INC | 1.8M | $135.0M | 0.1% | 5.3% | +23.4% |
| 4 | Gates Capital Management, Inc. | 1.7M | $130.0M | 3.1% | 5.1% | -36.3% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $115.9M | 0.0% | 4.5% | +0.6% |
| 6 | DIMENSIONAL FUND ADVISORS LP | 1.3M | $98.8M | 0.0% | 3.8% | +5.8% |
| 7 | LSV ASSET MANAGEMENT | 1.1M | $83.2M | 0.2% | 3.2% | +4.0% |
| 8 | STATE STREET CORP | 906,421 | $68.9M | 0.0% | 2.7% | +8.5% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 902,486 | $68.6M | 0.0% | 2.7% | +5.6% |
| 10 | EARNEST PARTNERS LLC | 772,294 | $58.7M | 0.2% | 2.3% | -0.7% |
| 11 | Hill City Capital, LP | 724,106 | $55.1M | 1.3% | 2.1% | -0.6% |
| 12 | T. Rowe Price Investment Management, Inc.NEW | 647,881 | $49.3M | 0.0% | 1.9% | new |
| 13 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 575,607 | $43.8M | 0.1% | 1.7% | +8.0% |
| 14 | Harding Loevner LP | 567,192 | $43.1M | 0.4% | 1.7% | -19.5% |
| 15 | FIRST TRUST ADVISORS LP | 533,063 | $40.5M | 0.0% | 1.6% | -56.5% |
| 16 | JPMORGAN CHASE & CO | 520,864 | $39.2M | 0.0% | 1.5% | +108.1% |
| 17 | JACOBS LEVY EQUITY MANAGEMENT, INC | 519,275 | $39.5M | 0.1% | 1.5% | +51.3% |
| 18 | Irenic Capital Management LP | 507,613 | $38.6M | 1.9% | 1.5% | +3531.8% |
| 19 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 482,239 | $36.7M | 0.0% | 1.4% | -30.9% |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 453,964 | $34.5M | 0.0% | 1.3% | +8.7% |
| 21 | BANK OF AMERICA CORP /DE/ | 438,802 | $33.4M | 0.0% | 1.3% | -5.1% |
| 22 | TWO SIGMA INVESTMENTS, LP | 402,131 | $30.6M | 0.0% | 1.2% | +13.9% |
| 23 | GENDELL JEFFREY L | 400,214 | $30.4M | 0.3% | 1.2% | 0.0% |
| 24 | LONDON CO OF VIRGINIA | 386,827 | $29.4M | 0.2% | 1.1% | +2.4% |
| 25 | MORGAN STANLEY | 378,566 | $28.8M | 0.0% | 1.1% | +11.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.