ATKORE INC (ATKR)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 32,895,715 shares against 33,772,550 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $237.0M | 3,116,222 | 0.00% | 8q | +18.6%+$37.2M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $161.4M | 2,122,380 | 0.01% | 2q | +1.5%+$2.4M |
| AMERICAN CENTURY COMPANIES INC | $135.0M | 1,775,158 | 0.06% | 31q | +23.4%+$25.6M |
| Gates Capital Management, Inc. | $130.0M | 1,710,192 | 3.13% | 16q | -36.3%-$74.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | $115.9M | 1,524,252 | 0.00% | 2q | +0.6%+$695.2K |
| DIMENSIONAL FUND ADVISORS LP | $98.8M | 1,299,786 | 0.02% | 31q | +5.8%+$5.5M |
| LSV ASSET MANAGEMENT | $83.2M | 1,093,590 | 0.15% | 31q | +4.0%+$3.2M |
| STATE STREET CORP | $68.9M | 906,421 | 0.00% | 31q | +8.5%+$5.4M |
| GEODE CAPITAL MANAGEMENT, LLC | $68.6M | 902,486 | 0.00% | 31q | +5.6%+$3.6M |
| EARNEST PARTNERS LLC | $58.7M | 772,294 | 0.21% | 3q | -0.7%-$426.7K |
| Hill City Capital, LP | $55.1M | 724,106 | 1.29% | 4q | -0.6%-$311.8K |
| T. Rowe Price Investment Management, Inc. | $49.3M | 647,881 | 0.03% | new | NEW |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $43.8M | 575,607 | 0.05% | 9q | +8.0%+$3.2M |
| Harding Loevner LP | $43.1M | 567,192 | 0.41% | 9q | -19.5%-$10.5M |
| FIRST TRUST ADVISORS LP | $40.5M | 533,063 | 0.02% | 31q | -56.5%-$52.8M |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $39.5M | 519,275 | 0.14% | 4q | +51.3%+$13.4M |
| JPMORGAN CHASE & CO | $39.2M | 520,864 | 0.00% | 31q | +108.1%+$20.4M |
| Irenic Capital Management LP | $38.6M | 507,613 | 1.85% | 3q | +3531.8%+$37.5M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $36.7M | 482,239 | 0.02% | 5q | -30.9%-$16.4M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $34.5M | 453,964 | 0.00% | 31q | +8.7%+$2.8M |
| BANK OF AMERICA CORP /DE/ | $33.4M | 438,802 | 0.00% | 31q | -5.1%-$1.8M |
| TWO SIGMA INVESTMENTS, LP | $30.6M | 402,131 | 0.02% | 8q | +13.9%+$3.7M |
| GENDELL JEFFREY L | $30.4M | 400,214 | 0.27% | 8q | HELD |
| LONDON CO OF VIRGINIA | $29.4M | 386,827 | 0.17% | 6q | +2.4%+$699.9K |
| MORGAN STANLEY | $28.8M | 378,566 | 0.00% | 35q | +11.9%+$3.1M |
| Oslo Pensjonsforsikring AS | $28.7M | 377,000 | 3.30% | 18q | HELD |
| VICTORY CAPITAL MANAGEMENT INC | $28.2M | 371,385 | 0.02% | 31q | -2.1%-$599.9K |
| Boston Partners | $27.9M | 367,806 | 0.02% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $25.9M | 341,215 | 0.03% | 31q | -0.7%-$174.9K |
| NORTHERN TRUST CORP | $25.5M | 335,441 | 0.00% | 31q | +4.4%+$1.1M |
| Swedbank AB | $22.5M | 296,206 | 0.02% | 10q | HELD |
| GOLDMAN SACHS GROUP INC | $21.9M | 288,586 | 0.00% | 31q | +4.5%+$950.0K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $19.2M | 252,429 | 0.34% | 4q | +3.4%+$627.0K |
| Bank of New York Mellon Corp | $18.8M | 247,645 | 0.00% | 31q | +5.0%+$891.6K |
| SEI INVESTMENTS CO | $18.6M | 244,346 | 0.02% | 31q | +17.2%+$2.7M |
| Nuveen, LLC | $18.2M | 238,992 | 0.00% | 6q | +23.2%+$3.4M |
| VANGUARD FIDUCIARY TRUST CO | $17.0M | 223,986 | 0.00% | 2q | +2.6%+$434.8K |
| Empowered Funds, LLC | $15.5M | 204,012 | 0.08% | 2q | +52.8%+$5.4M |
| BARCLAYS PLC | $15.0M | 197,509 | 0.00% | 31q | +24.4%+$2.9M |
| PDT Partners, LLC | $14.5M | 191,253 | 0.76% | 3q | +64.6%+$5.7M |
| FEDERATED HERMES, INC. | $14.0M | 184,141 | 0.02% | 31q | +15.4%+$1.9M |
| Allianz Asset Management GmbH | $13.8M | 181,838 | 0.01% | 31q | +49.1%+$4.6M |
| Qube Research & Technologies Ltd | $13.6M | 178,249 | 0.01% | 22q | +21.2%+$2.4M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $12.0M incl. $9.8M options CALL+PUT | 28,858 | 0.00% | 29q | -28.6%-$4.8M |
| JANE STREET GROUP, LLC | $12.0M incl. $6.8M options CALL+PUT | 68,185 | 0.00% | 24q | +40.0%+$3.4M |
| WELLS FARGO & COMPANY/MN | $11.9M | 155,867 | 0.00% | 31q | -12.5%-$1.7M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $11.5M | 150,669 | 0.02% | 4q | +19.8%+$1.9M |
| D. E. Shaw & Co., Inc. | $11.1M | 145,448 | 0.01% | 18q | +137.4%+$6.4M |
| CANYON CAPITAL ADVISORS LLC | $10.6M | 139,700 | 1.20% | 2q | -54.2%-$12.6M |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $10.6M | 139,446 | 0.03% | 6q | -9.1%-$1.1M |
| DNB Asset Management AS | $9.9M | 130,833 | 0.03% | 9q | -21.5%-$2.7M |
| Russell Investments Group, Ltd. | $9.5M | 125,124 | 0.01% | 31q | +32.7%+$2.3M |
| Trexquant Investment LP | $8.6M | 113,413 | 0.05% | new | NEW |
| CANADA PENSION PLAN INVESTMENT BOARD | $7.8M | 102,900 | 0.00% | 9q | -58.4%-$11.0M |
| Allspring Global Investments Holdings, LLC | $7.7M | 106,066 | 0.01% | 19q | +38.1%+$2.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $7.6M | 100,279 | 0.00% | 14q | -5.6%-$455.6K |
| Man Group plc | $7.5M | 98,582 | 0.01% | 5q | -34.4%-$3.9M |
| Aventail Capital Group, LP | $7.2M | 94,600 | 0.41% | new | NEW |
| Woodline Partners LP | $7.2M | 94,232 | 0.02% | 2q | -7.7%-$596.8K |
| Invesco Ltd. | $7.1M | 93,910 | 0.00% | 31q | HELD |
| NORDEA INVESTMENT MANAGEMENT AB | $6.8M | 89,807 | 0.01% | 22q | -3.9%-$276.3K |
| IMC-Chicago, LLC | $6.7M CALL+PUT | options only | 0.00% | 2q | OPTIONS |
| TOWLE & CO | $6.5M | 85,793 | 2.21% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $6.4M | 83,548 | 0.00% | 31q | +9.6%+$556.6K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $5.7M | 74,805 | 0.01% | 7q | +1.8%+$102.6K |
| KESTREL INVESTMENT MANAGEMENT CORP | $5.6M | 74,150 | 3.07% | 6q | HELD |
| Rock Point Advisors, LLC | $5.5M | 71,688 | 1.33% | 10q | -16.3%-$1.1M |
| AMERIPRISE FINANCIAL INC | $5.4M | 70,553 | 0.00% | 31q | HELD |
| MARTINGALE ASSET MANAGEMENT L P | $5.3M | 70,155 | 0.13% | 5q | +0.6%+$31.7K |
| Swiss National Bank | $5.1M | 67,700 | 0.00% | 31q | +2.0%+$98.9K |
| ENVESTNET ASSET MANAGEMENT INC | $5.1M | 66,747 | 0.00% | 26q | -8.2%-$452.7K |
| PRUDENTIAL FINANCIAL INC | $5.0M | 65,330 | 0.01% | 31q | +1.8%+$86.7K |
| Caisse de depot et placement du Quebec | $4.8M | 63,513 | 0.01% | 2q | +159.2%+$3.0M |
| RAYMOND JAMES FINANCIAL INC | $4.4M | 57,742 | 0.00% | 7q | -5.1%-$234.1K |
| Engineers Gate Manager LP | $4.3M | 57,071 | 0.06% | 10q | +723.5%+$3.8M |
| Edgestream Partners, L.P. | $4.3M | 56,665 | 0.13% | new | NEW |
| UBS Group AG | $4.1M | 53,561 | 0.00% | 31q | -30.6%-$1.8M |
| Tidal Investments LLC | $3.9M | 51,660 | 0.01% | 14q | +61.8%+$1.5M |
| XTX Topco Ltd | $3.9M | 50,831 | 0.05% | 3q | +774.9%+$3.4M |
| AQR CAPITAL MANAGEMENT LLC | $3.8M | 50,520 | 0.00% | 31q | -0.8%-$30.9K |
| Point72 Asset Management, L.P. | $3.8M | 49,751 | 0.00% | new | NEW |
| CITADEL ADVISORS LLC | $3.8M CALL+PUT | options only | 0.00% | 31q | OPTIONS |
| Defiance ETFs, LLC | $3.7M | 51,660 | 0.05% | 2q | +129.7%+$2.1M |
| RHUMBLINE ADVISERS | $3.5M | 46,500 | 0.00% | 31q | +6.6%+$219.1K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $3.5M | 45,457 | 0.00% | 31q | +17.7%+$520.9K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $3.4M | 44,800 | 0.01% | 3q | -39.7%-$2.2M |
| ALGERT GLOBAL LLC | $3.3M | 43,510 | 0.04% | new | NEW |
| DENALI ADVISORS LLC | $3.3M | 42,900 | 0.33% | 8q | -22.0%-$920.1K |
| Brevan Howard Capital Management LP | $3.2M | 42,459 | 0.02% | 2q | +38.9%+$904.7K |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | $3.2M | 41,658 | 0.01% | 31q | -14.3%-$527.3K |
| OPPENHEIMER ASSET MANAGEMENT INC. | $3.0M | 39,010 | 0.03% | 2q | -0.6%-$17.6K |
| CSM Advisors, LLC | $3.0M | 38,880 | 0.06% | 3q | +7.3%+$201.6K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $2.9M | 38,455 | 0.00% | 31q | -3.1%-$94.9K |
| ISTHMUS PARTNERS, LLC | $2.9M | 38,120 | 0.28% | 16q | +3.5%+$99.3K |
| DEUTSCHE BANK AG\ | $2.8M | 36,324 | 0.00% | 34q | -76.7%-$9.1M |
| DEAN INVESTMENT ASSOCIATES, LLC | $2.6M | 34,631 | 0.35% | 5q | +339.5%+$2.0M |
| Ausbil Investment Management Ltd | $2.5M | 35,147 | 1.15% | 15q | +219.6%+$1.7M |
| Legal & General Group Plc | $2.5M | 33,144 | 0.00% | 31q | +4.0%+$97.8K |
| VANGUARD ASSET MANAGEMENT, Ltd | $2.4M | 30,988 | 0.00% | 2q | HELD |
| HSBC HOLDINGS PLC | $2.3M | 29,846 | 0.00% | 2q | +60.0%+$844.9K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-30 | 13G/A | Vanguard Portfolio Management | 5.0% |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-08 | James Wilbert W Jr | Director | Sold | 3,299 | $242.8K |
| 2026-05-08 | Kershaw Justin A | Director | Sold | 2,799 | $206.2K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 50 | $41.0M | 464,040 | 13 | 12 | 11 | 0.0% |
| Q2 2026 | 331 | $2.5B | 32,895,715 | 61 | 115 | 87 | 1.2% |
| Q1 2026 | 307 | $1.9B | 32,489,777 | 43 | 100 | 95 | 0.9% |
| Q4 2025 | 313 | $2.1B | 32,388,568 | 50 | 90 | 107 | 1.2% |
| Q3 2025 | 305 | $2.1B | 32,938,667 | 57 | 84 | 114 | 1.6% |
| Q2 2025 | 302 | $2.4B | 33,093,458 | 46 | 104 | 105 | 1.3% |
| Q1 2025 | 302 | $2.1B | 33,757,036 | 47 | 109 | 103 | 1.6% |
| Q4 2024 | 338 | $3.2B | 37,661,713 | 35 | 113 | 123 | 1.5% |
| Q3 2024 | 372 | $3.2B | 37,378,861 | 62 | 133 | 128 | 2.1% |
| Q2 2024 | 458 | $5.6B | 40,571,953 | 65 | 178 | 149 | 1.8% |
| Q1 2024 | 467 | $7.9B | 40,719,184 | 70 | 143 | 171 | 1.7% |
| Q4 2023 | 452 | $6.6B | 40,282,451 | 56 | 163 | 144 | 1.7% |
| Q3 2023 | 418 | $5.9B | 39,086,856 | 42 | 154 | 139 | 1.9% |
| Q2 2023 | 415 | $6.3B | 39,029,413 | 58 | 138 | 151 | 2.8% |
| Q1 2023 | 399 | $5.8B | 41,129,348 | 71 | 133 | 141 | 1.9% |
| Q4 2022 | 375 | $4.6B | 39,655,771 | 98 | 83 | 137 | 2.0% |
| Q3 2022 | 291 | $33.8B | 433,844,089 | 26 | 103 | 111 | 0.1% |
| Q2 2022 | 313 | $35.9B | 431,997,495 | 43 | 101 | 126 | 0.1% |
| Q1 2022 | 316 | $36.7B | 372,346,109 | 48 | 98 | 126 | 0.1% |
| Q4 2021 | 310 | $47.8B | 429,363,028 | 55 | 95 | 110 | 0.1% |
| Q3 2021 | 270 | $41.9B | 481,525,065 | 47 | 79 | 110 | 0.1% |
| Q2 2021 | 251 | $34.7B | 487,603,551 | 39 | 91 | 89 | 0.0% |
| Q1 2021 | 235 | $9.5B | 132,051,239 | 79 | 52 | 92 | 0.1% |
| Q4 2020 | 183 | $4.2B | 102,783,483 | 35 | 52 | 75 | 0.2% |
| Q3 2020 | 175 | $3.3B | 144,964,656 | 25 | 62 | 69 | 0.0% |
| Q2 2020 | 166 | $3.8B | 138,936,800 | 27 | 58 | 58 | 0.0% |
| Q1 2020 | 168 | $3.3B | 158,698,283 | 18 | 56 | 72 | 0.0% |
| Q4 2019 | 208 | $6.0B | 147,920,292 | 47 | 63 | 82 | 0.0% |
| Q3 2019 | 179 | $1.8B | 60,870,411 | 27 | 54 | 75 | 0.1% |
| Q2 2019 | 168 | $1.6B | 62,529,465 | 25 | 67 | 53 | 0.1% |
| Q1 2019 | 174 | $1.2B | 57,288,338 | 28 | 53 | 69 | 0.0% |
| Q4 2018 | 164 | $1.7B | 85,907,533 | 6 | 3 | 1 | 0.1% |
