ATI Inc.
MX ˙ BMV ˙ US01741R1023
SecurityMX:ATI / ATI Inc.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership5,448 shares
Latest Disclosed Value $ 792,466
ProShare Advisors LLC reports 0.02% increase in ownership of ATI / ATI Inc.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 5,448 shares of ATI Inc. (MX:ATI) valued at $792,466 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 5,447 shares of ATI Inc.. This represents a change in shares of 0.02% 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)
2026-04-24 2026-03-31 13F ATI COM 01741R102 5,448 1 0.02 792 26.72 0.0012
2026-02-06 2025-12-31 13F ATI COM 01741R102 5,447 -416 -7.10 625 31.30 0.0011
2025-11-06 2025-09-30 13F ATI COM 01741R102 5,863 -391 -6.25 477 -11.69 0.0010
2025-08-07 2025-06-30 13F ATI COM 01741R102 6,254 176 2.90 540 70.57 0.0011
2025-05-08 2025-03-31 13F ATI COM 01741R102 6,078 6,078 316 0.0007
2024-11-14 2024-09-30 13F ATI COM 01741R102 0 -19,772 -100.00 0 -100.00
2024-08-13 2024-06-30 13F ATI COM 01741R102 19,772 -6,209 -23.90 1,096 -17.53 0.0029
2024-05-08 2024-03-31 13F ATI COM 01741R102 25,981 1,789 7.40 1,329 20.82 0.0035
2024-02-14 2023-12-31 13F ATI COM 01741R102 24,192 4,562 23.24 1,100 36.31 0.0034
2023-11-13 2023-09-30 13F ATI COM 01741R102 19,630 -513 -2.55 808 -9.33 0.0025
2023-08-10 2023-06-30 13F ATI COM 01741R102 20,143 2,002 11.04 891 24.48 0.0026
2023-05-26 2023-03-31 13F/A-1 ATI COM 01741R102 18,141 -1,606 -8.13 716 21.39 0.0022
2023-05-12 2023-03-31 13F ATI COM 01741R102 18,141 -1,606 716 0.0023
2023-02-02 2022-12-31 13F ATI COM 01741R102 19,747 2,525 14.66 590 28.60 0.0021
2022-11-07 2022-09-30 13F ATI COM 01741R102 17,222 -284 -1.62 458 15.08 0.0018
2022-08-01 2022-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 17,506 -10,818 -38.19 398 -47.63 0.0013
2022-05-10 2022-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 28,324 -3,513 -11.03 760 49.90 0.0016
2022-02-08 2021-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 31,837 12,196 62.09 507 55.05 0.0010
2021-11-12 2021-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 19,641 -16,902 -46.25 327 -57.09 0.0009
2021-08-13 2021-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 36,543 -1,146 -3.04 762 -4.03 0.0022
2021-05-14 2021-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 37,689 7,106 23.24 794 54.78 0.0025
2021-02-09 2020-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 30,583 12,703 71.05 513 228.85 0.0019
2020-11-13 2020-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 17,880 -11,992 -40.14 156 -48.68 0.0007
2020-08-03 2020-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 29,872 13,724 84.99 304 121.90 0.0016
2020-05-15 2020-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 16,148 -19,031 -54.10 137 -81.16 0.0010
2020-02-12 2019-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 35,179 3,060 9.53 727 11.85 0.0034
2019-11-12 2019-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 32,119 954 3.06 650 -17.20 0.0036
2019-08-13 2019-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 31,165 -594 -1.87 785 -3.33 0.0047
2019-05-15 2019-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 31,759 2,540 8.69 812 27.67 0.0049
2019-02-14 2018-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 29,219 -5,387 -15.57 636 -37.83 0.0045
2018-11-14 2018-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 34,606 -2,407 -6.50 1,023 10.00 0.0069
2018-08-13 2018-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 37,013 241 0.66 930 6.77 0.0062
2018-05-14 2018-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 36,772 -2,564 -6.52 871 -8.32 0.0057
2018-02-14 2017-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 39,336 18,239 86.45 950 88.49 0.0066
2017-11-13 2017-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 21,097 -3,051 -12.63 504 22.63 0.0046
2017-08-11 2017-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 24,148 -6,043 -20.02 411 -24.17 0.0041
2017-05-12 2017-03-31 13F/A-2 ALLEGHENY TECHNOLOGIES COM 01741R102 30,191 -6,703 -18.17 542 -7.82 0.0057
2017-05-08 2017-03-31 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 30,191 0 542 0.0057
2017-04-25 2017-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 30,191 542
2017-02-13 2016-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 36,894 8,984 32.19 588 16.67 0.0065
2016-11-10 2016-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 27,910 -4,047 -12.66 504 23.83 0.0070
2016-08-12 2016-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 31,957 12,236 62.05 407 26.79 0.0052
2016-05-06 2016-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 19,721 574 3.00 321 49.30 0.0044
2016-02-05 2015-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 19,147 3,344 21.16 215 -4.02 0.0026
2015-11-06 2015-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 15,803 -4,868 -23.55 224 -64.10 0.0031
2015-08-11 2015-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 20,671 -51,258 -71.26 624 -71.10 0.0086
2015-05-08 2015-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 71,929 71,929 0.00 2,159 0.0254
2015-01-30 2014-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 0 -55,283 -100.00 0 -100.00
2014-11-06 2014-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 55,283 24,064 77.08 2,051 45.67 0.0272
2014-08-08 2014-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 31,219 -1,218 -3.75 1,408 15.22 0.0182
2014-05-07 2014-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 32,437 698 2.20 1,222 8.05 0.0153
2014-02-04 2013-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 31,739 17,578 124.13 1,131 161.81 0.0169
2013-11-07 2013-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 14,161 -16,915 -54.43 432 -47.19 0.0103
2013-07-25 2013-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 31,076 31,076 818 0.0161
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.