Latest Period
Q1 2026
Security Snapshot
Atkore Inc. - Common Stock (ATKR) Institutional Ownership
CUSIP: 047649108
13F Institutional Holders and Ownership History from Q2 2016 to Q2 2026
Institutions Reporting
302
Shares (Excl. Options)
32,489,711
Price
$58.91
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- Security type / class
- Equity / Common Stock
- Symbol
- ATKR on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 32,489,711
- Total 13F value
- $1,914,258,390
- Portfolio coverage rank
- 0%
- Share change
- -177,553
- Value change
- -$16,557,553
- Number of holders
- 302
- Shares outstanding
- 33,778,610
- SEC-reported price per share
- $76.04
- Insider filing price
- $76.04
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ATKR - Atkore Inc. - Common Stock is tracked under CUSIP 047649108.
- 302 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 302 to 3 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $1,914,258,390 to $150,255.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 302 institutions filings for Q1 2026.
Security key
047649108
Latest holder period
Q1 2026
13F holders
302
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
ATKR full holder history
Atkore Inc. SEC filings
Atkore Inc. company facts
Atkore Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 047649108:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
ATKR
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Gates Capital Management, Inc. | 7.8% | -17% | $197,035,329 | -$47,746,294 | 2,628,189 | -20% | Gates Capital Management, L.P. | 30 Jun 2025 |
| BlackRock, Inc. | 7.3% | $154,504,335 | 2,462,609 | BlackRock, Inc. | 30 Sep 2025 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.3% | $124,742,384 | 2,117,497 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $104,470,171 | 1,773,377 | Vanguard Capital Management | 31 Mar 2026 | |||
| FIRST TRUST PORTFOLIOS LP | 3.9% | -22% | $81,974,453 | -$26,000,209 | 1,306,574 | -24% | First Trust Portfolios L.P. | 30 Sep 2025 |
As of 31 Mar 2026, 302 institutional investors reported holding 32,489,711 shares of Atkore Inc. - Common Stock (ATKR). This represents 96% of the company’s total 33,778,610 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
69%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Gates Capital Management, Inc. | 8% | 2,685,718 | -1.7% | 5.5% | $158,215,647 |
| BlackRock, Inc. | 7.8% | 2,626,791 | +2.8% | 0% | $154,744,274 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2% | 2,090,469 | 0% | 0.01% | $123,149,529 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 1,515,110 | 0% | 0% | $89,255,130 |
| AMERICAN CENTURY COMPANIES INC | 4.3% | 1,439,116 | +15% | 0.04% | $84,778,335 |
| DIMENSIONAL FUND ADVISORS LP | 3.6% | 1,227,991 | +8.6% | 0.02% | $72,340,574 |
| FIRST TRUST ADVISORS LP | 3.6% | 1,226,840 | -11% | 0.05% | $72,273,144 |
| LSV ASSET MANAGEMENT | 3.1% | 1,051,861 | +9.5% | 0.13% | $61,965,000 |
| Coliseum Capital Management, LLC | 2.8% | 947,070 | +17% | 4.6% | $55,791,894 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 854,731 | +6.5% | 0% | $50,361,921 |
| STATE STREET CORP | 2.5% | 835,156 | +0.92% | 0% | $49,199,040 |
| EARNEST PARTNERS LLC | 2.3% | 777,905 | -0.74% | 0.19% | $45,826,384 |
| Hill City Capital, LP | 2.2% | 728,206 | 0% | 1.5% | $42,898,615 |
| Harding Loevner LP | 2.1% | 704,862 | -3.8% | 0.43% | $41,535,636 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.1% | 698,134 | -0.93% | 0.02% | $41,127,074 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.6% | 532,992 | +52% | 0.04% | $31,398,019 |
| BANK OF AMERICA CORP /DE/ | 1.4% | 462,278 | +10% | 0% | $27,232,797 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.2% | 417,644 | +1.6% | 0% | $24,603,408 |
| GENDELL JEFFREY L | 1.2% | 400,214 | +3.4% | 0.32% | $23,576,606 |
| VICTORY CAPITAL MANAGEMENT INC | 1.1% | 379,274 | -23% | 0.01% | $22,343,031 |
| LONDON CO OF VIRGINIA | 1.1% | 377,623 | -8.3% | 0.14% | $22,245,906 |
| Oslo Pensjonsforsikring AS | 1.1% | 377,000 | 0% | 3.5% | $22,209,070 |
| TWO SIGMA INVESTMENTS, LP | 1% | 353,000 | +61% | 0.02% | $20,795,230 |
| NEW YORK STATE COMMON RETIREMENT FUND | 1% | 343,515 | -0.67% | 0.03% | $20,236,469 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1% | 343,289 | +6% | 0.09% | $20,223,155 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
41
Latest
Q1 2026
Rows shown
1-25 of 41
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 1,976 | $150,255 | -$4,321 | $76.04 | 3 |
| 2026 Q1 | 32,489,711 | $1,914,258,390 | -$16,557,553 | $58.91 | 302 |
| 2025 Q4 | 31,988,936 | $2,023,652,713 | -$23,825,100 | $63.25 | 306 |
| 2025 Q3 | 32,263,319 | $2,024,894,475 | -$44,046,024 | $62.74 | 295 |
| 2025 Q2 | 32,795,224 | $2,321,952,503 | -$48,513,360 | $70.55 | 290 |
| 2025 Q1 | 33,550,272 | $2,012,730,322 | -$304,894,543 | $59.99 | 291 |
| 2024 Q4 | 37,323,975 | $3,111,923,794 | +$91,408,379 | $83.45 | 325 |
| 2024 Q3 | 36,054,204 | $3,055,403,985 | -$433,225,562 | $84.74 | 359 |
| 2024 Q2 | 39,520,389 | $5,334,744,181 | -$58,627,328 | $134.93 | 443 |
| 2024 Q1 | 39,260,233 | $7,474,224,397 | +$92,664,569 | $190.36 | 447 |
| 2023 Q4 | 39,277,126 | $6,283,627,517 | +$45,736,485 | $160.00 | 438 |
| 2023 Q3 | 38,822,549 | $5,791,038,643 | -$12,062,658 | $149.19 | 408 |
| 2023 Q2 | 38,767,298 | $6,044,399,356 | +$65,868,945 | $155.94 | 404 |
| 2023 Q1 | 38,340,558 | $5,385,793,882 | -$86,569,697 | $140.48 | 388 |
| 2022 Q4 | 39,441,763 | $4,475,639,060 | -$185,135,193 | $113.42 | 362 |
| 2022 Q3 | 41,162,279 | $3,203,299,572 | +$33,234,386 | $77.81 | 288 |
| 2022 Q2 | 40,809,864 | $3,389,233,466 | -$74,233,562 | $83.01 | 308 |
| 2022 Q1 | 41,789,145 | $4,121,533,124 | -$113,479,329 | $98.44 | 314 |
| 2021 Q4 | 42,895,506 | $4,766,357,492 | -$268,496,052 | $111.19 | 308 |
| 2021 Q3 | 43,793,954 | $3,812,339,996 | -$14,461,364 | $86.92 | 271 |
| 2021 Q2 | 43,848,485 | $3,113,322,980 | -$92,455,728 | $71.00 | 250 |
| 2021 Q1 | 45,149,585 | $3,247,306,884 | +$33,845,469 | $71.90 | 237 |
| 2020 Q4 | 45,116,690 | $1,855,129,814 | -$41,454,962 | $41.11 | 185 |
| 2020 Q3 | 46,405,771 | $1,054,955,378 | -$488,269 | $22.73 | 176 |
| 2020 Q2 | 46,306,323 | $1,266,075,397 | +$16,536,132 | $27.35 | 165 |