ATI Inc.
MX ˙ BMV ˙ US01741R1023
SecurityMX:ATI / ATI Inc.
InstitutionLPL Financial LLC
Latest Disclosed Ownership165,570 shares
Latest Disclosed Value $ 24,083,885
LPL Financial LLC reports 148.51% increase in ownership of ATI / ATI Inc.

On May 6, 2026 - LPL Financial LLC filed a 13F-HR form disclosing ownership of 165,570 shares of ATI Inc. (MX:ATI) valued at $24,083,885 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 66,626 shares of ATI Inc.. This represents a change in shares of 148.51% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-06 2026-03-31 13F ATI COM 01741R102 165,570 98,944 148.51 24,084 214.98 0.0064
2026-02-11 2025-12-31 13F ATI COM 01741R102 66,626 -10,148 -13.22 7,646 22.45 0.0021
2025-11-12 2025-09-30 13F ATI COM 01741R102 76,774 21,392 38.63 6,245 30.60 0.0018
2025-08-12 2025-06-30 13F ATI COM 01741R102 55,382 -1,426 -2.51 4,782 61.79 0.0016
2025-05-07 2025-03-31 13F ATI COM 01741R102 56,808 8,876 18.52 2,956 12.02 0.0011
2025-02-11 2024-12-31 13F ATI COM 01741R102 47,932 -2,203 -4.39 2,638 -21.35 0.0011
2024-11-08 2024-09-30 13F ATI COM 01741R102 50,135 2,472 5.19 3,355 26.95 0.0015
2024-08-07 2024-06-30 13F ATI COM 01741R102 47,663 7,205 17.81 2,643 27.63 0.0013
2024-05-10 2024-03-31 13F ATI COM 01741R102 40,458 335 0.83 2,070 13.49 0.0011
2024-02-14 2023-12-31 13F ATI COM 01741R102 40,123 3,573 9.78 1,824 21.28 0.0011
2023-11-13 2023-09-30 13F ATI COM 01741R102 36,550 2,447 7.18 1,504 -0.27 0.0011
2023-07-31 2023-06-30 13F ATI COM 01741R102 34,103 5,797 20.48 1,508 35.13 0.0011
2023-05-10 2023-03-31 13F ATI COM 01741R102 28,306 11,290 66.35 1,117 119.69 0.0009
2023-02-07 2022-12-31 13F ATI COM 01741R102 17,016 1,620 10.52 508 23.90 0.0004
2022-11-14 2022-09-30 13F ATI COM 01741R102 15,396 -814 -5.02 410 11.41 0.0004
2022-08-12 2022-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 16,210 -2,007 -11.02 368 -24.74 0.0003
2022-05-16 2022-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 18,217 2,244 14.05 489 92.52 0.0004
2022-02-14 2021-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 15,973 233 1.48 254 -3.05 0.0002
2021-11-15 2021-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 15,740 823 5.52 262 -15.76 0.0002
2021-08-13 2021-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 14,917 -2,455 -14.13 311 -15.03 0.0003
2021-05-14 2021-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 17,372 718 4.31 366 31.18 0.0004
2021-02-12 2020-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 16,654 -2,938 -15.00 279 63.16 0.0004
2020-11-09 2020-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 19,592 2,720 16.12 171 -0.58 0.0003
2020-08-13 2020-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 16,872 16,872 172 0.0003
2020-05-14 2020-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 0 -10,226 -100.00 0 -100.00
2020-02-14 2019-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 10,226 -1,835 -15.21 211 -13.52 0.0004
2019-11-13 2019-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 12,061 -1,165 -8.81 244 -26.73 0.0005
2019-08-09 2019-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 13,226 3,530 36.41 333 34.27 0.0007
2019-05-08 2019-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 9,696 -130 -1.32 248 15.89 0.0006
2019-02-07 2018-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 9,826 1,326 15.60 214 -14.74 0.0006
2018-11-14 2018-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 8,500 8,500 251 0.0006
2017-11-14 2017-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 0 -10,231 -100.00 0 -100.00
2017-08-14 2017-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 10,231 10,231 174 0.0007
2016-08-15 2016-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 0 -13,477 -100.00 0 -100.00
2016-05-16 2016-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 13,477 -3,260 -19.48 204 9.09 0.0006
2016-02-12 2015-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 16,737 926 5.86 187 -25.79 0.0005
2015-11-13 2015-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 15,811 1,034 7.00 252 -40.43 0.0014
2015-08-14 2015-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 14,777 -20,024 -57.54 423 -58.93 0.0021
2015-05-14 2015-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 34,801 27,374 368.57 1,030 299.22 0.0053
2015-02-13 2014-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 7,427 656 9.69 258 5.74 0.0014
2014-11-10 2014-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 6,771 1,496 28.36 244 2.52 0.0015
2014-08-05 2014-06-30 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 5,275 5,275 238 0.0014
2014-08-05 2014-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 5,275 0 1,693 0.0366
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.