ATI Inc.
MX ˙ BMV ˙ US01741R1023
SecurityMX:ATI / ATI Inc.
InstitutionMAI Capital Management
Latest Disclosed Ownership938 shares
Latest Disclosed Value $ 136,458
MAI Capital Management reports 48.42% increase in ownership of ATI / ATI Inc.

On May 15, 2026 - MAI Capital Management filed a 13F-HR form disclosing ownership of 938 shares of ATI Inc. (MX:ATI) valued at $136,458 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 632 shares of ATI Inc.. This represents a change in shares of 48.42% 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)
2026-05-15 2026-03-31 13F ATI COM 01741R102 938 306 48.42 136 88.89 0.0008
2026-02-13 2025-12-31 13F ATI COM 01741R102 632 -22 -3.36 73 35.85 0.0004
2025-11-10 2025-09-30 13F ATI COM 01741R102 654 -215 -24.74 53 -29.33 0.0003
2025-08-12 2025-06-30 13F ATI COM 01741R102 869 242 38.60 75 134.38 0.0005
2025-05-15 2025-03-31 13F ATI COM 01741R102 627 -20 -3.09 33 -8.57 0.0002
2025-02-14 2024-12-31 13F ATI COM 01741R102 647 647 36 0.0003
2019-01-30 2018-12-31 13F Allegheny Tech CS 01741R102 0 -8,079 -100.00 0 -100.00
2018-10-12 2018-09-30 13F Allegheny Tech CS 01741R102 8,079 -163 -1.98 239 15.46 0.0122
2018-08-16 2018-06-30 13F Allegheny Tech CS 01741R102 8,242 8,242 207 0.0112
2018-04-17 2018-03-31 13F Allegheny Tech CS 01741R102 0 -9,527 -100.00 0 -100.00
2018-01-30 2017-12-31 13F Allegheny Tech CS 01741R102 9,527 9,527 230 0.0131
2017-10-12 2017-09-30 13F Allegheny Tech CS 01741R102 0 -10,670 -100.00 0 -100.00
2017-08-07 2017-06-30 13F Allegheny Tech CS 01741R102 10,670 10,670 181 0.0117
2016-04-08 2016-03-31 13F Allegheny Tech CS 01741R102 0 0 0 0.0000
2016-01-27 2015-12-31 13F Allegheny Tech CS 01741R102 0 0 0 0.0000
2015-10-28 2015-09-30 13F Allegheny Tech CS 01741R102 0 -8,209 -100.00 0 -100.00
2015-07-09 2015-06-30 13F Allegheny Tech CS 01741R102 8,209 441 5.68 248 6.44 0.0163
2015-04-30 2015-03-31 13F Allegheny Tech CS 01741R102 7,768 -132 -1.67 233 -15.27 0.0156
2015-01-20 2014-12-31 13F Allegheny Tech CS 01741R102 7,900 2,234 39.43 275 30.95 0.0193
2014-10-16 2014-09-30 13F/A-1 Allegheny Tech CS 01741R102 5,666 -589 -9.42 210 -25.53 0.0202
2014-10-16 2014-09-30 13F Allegheny Tech COM 01741R102 6,255 282
2014-07-28 2014-06-30 13F Allegheny Tech COM 01741R102 6,255 -1,132 -15.32 282 1.44 0.0271
2014-04-28 2014-03-31 13F Allegheny Tech COM 01741R102 7,387 698 10.44 278 16.81 0.0280
2014-02-06 2013-12-31 13F Allegheny Tech COM 01741R102 6,689 -231 -3.34 238 12.80 0.0252
2013-10-28 2013-09-30 13F Allegheny Tech COM 01741R102 6,920 6,920 211 0.0274
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.