Atkore Inc.
MX ˙ BMV ˙ US0476491081
SecurityMX:ATKR / Atkore Inc.
InstitutionJpmorgan Chase & Co
Latest Disclosed Ownership250,308 shares
Latest Disclosed Value $ 14,555,410
Jpmorgan Chase & Co reports 36.97% decrease in ownership of ATKR / Atkore Inc.

On May 13, 2026 - Jpmorgan Chase & Co filed a 13F-HR/A form disclosing ownership of 250,308 shares of Atkore Inc. (MX:ATKR) valued at $14,555,410 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 397,146 shares of Atkore Inc.. This represents a change in shares of -36.97% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F/A-1 ATKORE COMMON 047649108 250,308 -146,838 -36.97 14,555 -42.06 0.0001
2026-05-13 2026-03-31 13F ATKORE COMMON 047649108 0 -100.00 0
2026-02-11 2025-12-31 13F ATKORE COMMON 047649108 397,146 101,308 34.24 25,119 35.34 0.0016
2025-11-26 2025-09-30 13F/A-1 ATKORE COMMON 047649108 295,838 -239,324 -44.72 18,561 -50.84 0.0011
2025-11-07 2025-09-30 13F ATKORE COMMON 047649108 295,838 -239,324 18,561 0.0001
2025-08-12 2025-06-30 13F ATKORE COMMON 047649108 535,162 279,385 109.23 37,756 146.06 0.0025
2025-05-12 2025-03-31 13F ATKORE COMMON 047649108 255,777 -41,918 -14.08 15,344 -38.23 0.0011
2025-02-12 2024-12-31 13F ATKORE COMMON 047649108 297,695 -49,262 -14.20 24,843 -15.51 0.0018
2024-12-26 2024-09-30 13F/A-1 ATKORE COMMON 047649108 346,957 -273,946 -44.12 29,401 -64.91 0.0022
2024-11-08 2024-09-30 13F ATKORE COMMON 047649108 346,957 -273,946 29,401 0.0022
2024-12-26 2024-06-30 13F/A-1 ATKORE COMMON 047649108 620,903 364,255 141.93 83,778 71.48 0.0069
2024-08-12 2024-06-30 13F ATKORE COMMON 047649108 620,903 364,255 83,778 0.0069
2024-12-26 2024-03-31 13F/A-1 ATKORE COMMON 047649108 256,648 -48,997 -16.03 48,855 -0.10 0.0041
2024-05-10 2024-03-31 13F ATKORE COMMON 047649108 256,648 -48,997 48,855 0.0041
2024-12-26 2023-12-31 13F/A-1 ATKORE COMMON 047649108 305,645 93,842 44.31 48,903 54.77 0.0047
2024-02-12 2023-12-31 13F ATKORE COMMON 047649108 305,645 93,842 48,903 0.0047
2023-11-14 2023-09-30 13F ATKORE COMMON 047649108 211,803 -36,450 -14.68 31,599 -18.38 0.0035
2023-08-11 2023-06-30 13F ATKORE COMMON 047649108 248,253 23,600 10.51 38,713 22.66 0.0042
2023-05-18 2023-03-31 13F/A-1 ATKORE COMMON 047649108 224,653 -30,120 -11.82 31,560 112,614.29 0.0038
2023-05-11 2023-03-31 13F ATKORE COMMON 047649108 172,367 -82,406 31,560 0.0005
2023-02-13 2022-12-31 13F ATKORE COMMON 047649108 254,773 -31,389 -10.97 29 -99.87 0.0038
2022-11-14 2022-09-30 13F ATKORE COMMON 047649108 286,162 -70,177 -19.69 22,266 -24.72 0.0032
2022-08-11 2022-06-30 13F ATKORE COMMON 047649108 356,339 136,743 62.27 29,579 36.83 0.0041
2022-05-11 2022-03-31 13F ATKORE COMMON 047649108 219,596 -1,696 -0.77 21,618 -12.14 0.0026
2022-02-11 2021-12-31 13F/A-1 ATKORE COMMON 047649108 221,292 -74,352 -25.15 24,606 -4.25 0.0028
2022-02-10 2021-12-31 13F ATKORE COMMON 047649108 221,292 -74,352 24,606 0.0028
2021-11-12 2021-09-30 13F ATKORE COMMON 047649108 295,644 -33,667 -10.22 25,697 9.90 0.0032
2021-08-12 2021-06-30 13F ATKORE COMMON 047649108 329,311 -3,606 -1.08 23,382 -2.32 0.0028
2021-05-12 2021-03-31 13F ATKORE COMMON 047649108 332,917 20,089 6.42 23,937 86.14 0.0032
2021-02-19 2020-12-31 13F/A-1 ATKORE INTL GROUP COMMON 047649108 312,828 -36,400 -10.42 12,860 61.58 0.0019
2021-02-11 2020-12-31 13F ATKORE INTL GROUP COMMON 047649108 312,828 -36,400 12,860 318.0370
2020-11-12 2020-09-30 13F/A-1 ATKORE INTL GROUP COMMON 047649108 349,228 -106,150 -23.31 7,959 -36.10 0.0013
2020-11-12 2020-09-30 13F ATKORE INTL GROUP COMMON 047649108 349,228 7,959
2020-08-11 2020-06-30 13F ATKORE INTL GROUP COMMON 047649108 455,378 32,352 7.65 12,455 39.72 0.0024
2020-05-12 2020-03-31 13F ATKORE INTL GROUP COMMON 047649108 423,026 -143,864 -25.38 8,914 -61.14 0.0021
2020-02-11 2019-12-31 13F ATKORE INTL GROUP COMMON 047649108 566,890 -172,130 -23.29 22,937 2.26 0.0043
2019-11-12 2019-09-30 13F ATKORE INTL GROUP COMMON 047649108 739,020 309,974 72.25 22,430 103.35 0.0045
2019-08-07 2019-06-30 13F ATKORE INTL GROUP COMMON 047649108 429,046 215,721 101.12 11,030 140.15 0.0022
2019-05-07 2019-03-31 13F ATKORE INTL GROUP COMMON 047649108 213,325 11,239 5.56 4,593 14.54 0.0009
2019-02-11 2018-12-31 13F ATKORE INTL GROUP COMMON 047649108 202,086 37,446 22.74 4,010 -8.20 0.0009
2018-11-13 2018-09-30 13F/A-1 ATKORE INTL GROUP COMMON 047649108 164,640 -17,762 -9.74 4,368 15.31 0.0008
2018-11-07 2018-09-30 13F ATKORE INTL GROUP COMMON 047649108 164,640 -17,762 4,368
2018-08-14 2018-06-30 13F ATKORE INTL GROUP COMMON 047649108 182,402 -27,817 -13.23 3,788 -9.25 0.0008
2018-05-10 2018-03-31 13F ATKORE INTL GROUP COMMON 047649108 210,219 191,017 994.78 4,174 913.11 0.0009
2018-02-13 2017-12-31 13F ATKORE INTL GROUP COMMON 047649108 19,202 -25,525 -57.07 412 -52.97 0.0001
2017-11-09 2017-09-30 13F ATKORE INTL GROUP COMMON 047649108 44,727 44,599 34,842.97 876 29,100.00 0.0002
2017-08-09 2017-06-30 13F ATKORE INTL GROUP COMMON 047649108 128 -9,618 -98.69 3 -98.83 0.0000
2017-05-10 2017-03-31 13F ATKORE INTL GROUP COMMON 047649108 9,746 9,746 256 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.