Who owns Atkore Inc.?
Institutional ownership of ATKR from SEC Form 13F filings across 211 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.
211
13F holders
$1.55B
value, 2026 filers
60.6%
of shares outstanding (20.5M sh)
47
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 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $115.9M | 0.0% | 4.5% | -49.7% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 902,486 | $68.6M | 0.0% | 2.7% | +5.6% |
| 6 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 575,607 | $43.8M | 0.1% | 1.7% | +8.0% |
| 7 | FIRST TRUST ADVISORS LP | 533,063 | $40.5M | 0.0% | 1.6% | -56.5% |
| 8 | JPMORGAN CHASE & CO | 520,864 | $39.2M | 0.0% | 1.5% | +108.1% |
| 9 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 482,239 | $36.7M | 0.0% | 1.4% | -30.9% |
| 10 | Sixth Street Partners Management Company, L.P.NEW | 453,964 | $34.5M | 6.0% | 1.3% | new |
| 11 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 453,964 | $34.5M | 0.0% | 1.3% | +8.7% |
| 12 | BANK OF AMERICA CORP /DE/ | 438,802 | $33.4M | 0.0% | 1.3% | -5.1% |
| 13 | TWO SIGMA INVESTMENTS, LP | 402,131 | $30.6M | 0.0% | 1.2% | +13.9% |
| 14 | MORGAN STANLEY | 378,566 | $28.8M | 0.0% | 1.1% | +11.9% |
| 15 | VICTORY CAPITAL MANAGEMENT INC | 371,385 | $28.2M | 0.0% | 1.1% | -2.1% |
| 16 | NEW YORK STATE COMMON RETIREMENT FUND | 341,215 | $25.9M | 0.0% | 1% | -0.7% |
| 17 | NORTHERN TRUST CORP | 335,441 | $25.5M | 0.0% | 1% | +4.4% |
| 18 | Swedbank AB | 296,206 | $22.5M | 0.0% | 0.9% | 0.0% |
| 19 | GOLDMAN SACHS GROUP INC | 288,586 | $21.9M | 0.0% | 0.9% | +4.5% |
| 20 | Bank of New York Mellon Corp | 247,645 | $18.8M | 0.0% | 0.7% | +5.0% |
| 21 | SEI INVESTMENTS CO | 244,346 | $18.6M | 0.0% | 0.7% | +17.2% |
| 22 | Nuveen, LLC | 238,992 | $18.2M | 0.0% | 0.7% | +23.2% |
| 23 | VANGUARD FIDUCIARY TRUST CO | 223,986 | $17.0M | 0.0% | 0.7% | +2.6% |
| 24 | BARCLAYS PLC | 197,509 | $15.0M | 0.0% | 0.6% | +24.4% |
| 25 | FEDERATED HERMES, INC. | 184,141 | $14.0M | 0.0% | 0.5% | +15.4% |
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.