ATI Inc.
MX ˙ BMV ˙ US01741R1023
SecurityMX:ATI / ATI Inc.
InstitutionBessemer Group Inc
Latest Disclosed Ownership2,106 shares
Latest Disclosed Value $ 306
Bessemer Group Inc reports 10.32% increase in ownership of ATI / ATI Inc.

On May 6, 2026 - Bessemer Group Inc filed a 13F-HR form disclosing ownership of 2,106 shares of ATI Inc. (MX:ATI) valued at $306 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 1,909 shares of ATI Inc..

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)
2026-05-06 2026-03-31 13F ATI SC 01741R102 2,106 197 10.32 0 0.0005
2026-02-05 2025-12-31 13F ATI SC 01741R102 1,909 0 0.00 0 0.0003
2025-11-05 2025-09-30 13F ATI SC 01741R102 1,909 96 5.30 0 0.0002
2025-08-01 2025-06-30 13F ATI SC 01741R102 1,813 1,151 173.87 0 0.0003
2025-04-23 2025-03-31 13F ATI SC 01741R102 662 386 139.86 0 0.0001
2025-02-13 2024-12-31 13F ATI SC 01741R102 276 -4,313 -93.99 0 0.0000
2024-11-12 2024-09-30 13F ATI SC 01741R102 4,589 56 1.24 0 0.0005
2024-08-13 2024-06-30 13F ATI SC 01741R102 4,533 -449 -9.01 0 0.0004
2024-08-13 2024-03-31 13F/A-1 ATI SC 01741R102 4,982 -2,200 -30.63 0 0.0005
2024-05-13 2024-03-31 13F ATI SC 01741R102 4,982 -2,200 0 0.0005
2024-02-09 2023-12-31 13F ATI SC 01741R102 7,182 0 0.00 0 0.0006
2023-11-13 2023-09-30 13F ATI SC 01741R102 7,182 0 0.00 0 0.0006
2023-08-10 2023-06-30 13F ATI SC 01741R102 7,182 -728 -9.20 0 0.0007
2023-05-10 2023-03-31 13F ATI SC 01741R102 7,910 650 8.95 0 0.0007
2023-02-13 2022-12-31 13F ATI SC 01741R102 7,260 -760 -9.48 0 -100.00 0.0005
2022-11-09 2022-09-30 13F ATI SC 01741R102 8,020 -1,140 -12.45 213 2.40 0.0006
2022-08-10 2022-06-30 13F ALLEGHENY TECH SC 01741R102 9,160 -2,200 -19.37 208 -31.80 0.0005
2022-05-12 2022-03-31 13F ALLEGHENY TECH SC 01741R102 11,360 -13,285 -53.91 305 -22.39 0.0006
2022-01-27 2021-12-31 13F ALLEGHENY TECH SC 01741R102 24,645 990 4.19 393 0.00 0.0008
2021-11-12 2021-09-30 13F ALLEGHENY TECH SC 01741R102 23,655 4,640 24.40 393 -0.76 0.0008
2021-08-06 2021-06-30 13F ALLEGHENY TECH SC 01741R102 19,015 -2,710 -12.47 396 -13.54 0.0009
2021-05-13 2021-03-31 13F ALLEGHENY TECH SC 01741R102 21,725 -5,510 -20.23 458 0.22 0.0011
2021-02-09 2020-12-31 13F ALLEGHENY TECH SC 01741R102 27,235 -3,090 -10.19 457 73.11 0.0012
2020-11-12 2020-09-30 13F ALLEGHENY TECH SC 01741R102 30,325 0 0.00 264 -14.56 0.0008
2020-08-05 2020-06-30 13F ALLEGHENY TECH SC 01741R102 30,325 2,495 8.97 309 30.38 0.0010
2020-04-30 2020-03-31 13F ALLEGHENY TECH SC 01741R102 27,830 8,060 40.77 237 -41.91 0.0010
2020-02-04 2019-12-31 13F ALLEGHENY TECH SC 01741R102 19,770 0 0.00 408 2.00 0.0013
2019-11-07 2019-09-30 13F ALLEGHENY TECH SC 01741R102 19,770 5,595 39.47 400 12.04 0.0014
2019-07-19 2019-06-30 13F ALLEGHENY TECH SC 01741R102 14,175 791 5.91 357 4.08 0.0012
2019-05-13 2019-03-31 13F ALLEGHENY TECH SC 01741R102 13,384 1,575 13.34 343 33.46 0.0013
2019-05-21 2018-12-31 13F/A-1 ALLEGHENY TECH SC 01741R102 11,809 144 1.23 257 -25.51 0.0011
2019-02-12 2018-12-31 13F ALLEGHENY TECH SC 01741R102 11,809 144 257 0.0011
2018-11-06 2018-09-30 13F ALLEGHENY TECH SC 01741R102 11,665 0 0.00 345 17.75 0.0013
2018-07-25 2018-06-30 13F ALLEGHENY TECH SC 01741R102 11,665 750 6.87 293 13.57 0.0011
2018-05-10 2018-03-31 13F ALLEGHENY TECH SC 01741R102 10,915 -4,770 -30.41 258 -31.93 0.0010
2018-01-30 2017-12-31 13F ALLEGHENY TECH SC 01741R102 15,685 -1,740 -9.99 379 -8.89 0.0015
2017-11-03 2017-09-30 13F ALLEGHENY TECH SC 01741R102 17,425 0 0.00 416 40.54 0.0017
2017-07-27 2017-06-30 13F ALLEGHENY TECH SC 01741R102 17,425 4,850 38.57 296 30.97 0.0012
2017-05-12 2017-03-31 13F ALLEGHENY TECH SC 01741R102 12,575 -590 -4.48 226 8.13 0.0009
2017-02-07 2016-12-31 13F ALLEGHENY TECH SC 01741R102 13,165 1,705 14.88 209 0.97 0.0010
2016-11-10 2016-09-30 13F ALLEGHENY TECH SC 01741R102 11,460 -2,295 -16.68 207 18.29 0.0010
2016-08-11 2016-06-30 13F ALLEGHENY TECH SC 01741R102 13,755 2,530 22.54 175 -4.37 0.0010
2016-05-11 2016-03-31 13F ALLEGHENY TECH SC 01741R102 11,225 445 4.13 183 51.24 0.0010
2016-02-12 2015-12-31 13F ALLEGHENY TECH SC 01741R102 10,780 10,780 241.68 121 3.42 0.0007
2015-11-16 2015-09-30 13F ALLEGHENY TECH SC 01741R102 0 -5,850 -100.00 0 -100.00
2015-08-14 2015-06-30 13F ALLEGHENY TECH SC 01741R102 5,850 -340 -5.49 177 -4.84 0.0009
2015-06-18 2015-03-31 13F/A-1 ALLEGHENY TECH SC 01741R102 6,190 955 18.24 186 2.20 0.0009
2015-05-14 2015-03-31 13F ALLEGHENY TECH SC 01741R102 6,190 186
2015-02-17 2014-12-31 13F ALLEGHENY TECH SC 01741R102 5,235 2,080 65.93 182 55.56 0.0010
2014-12-11 2014-09-30 13F/A-1 ALLEGHENY TECH SC 01741R102 3,155 0 0.00 117 -17.61 0.0007
2014-11-13 2014-09-30 13F ALLEGHENY TECH SC 01741R102 3,155 0 117 0.0007
2014-08-13 2014-06-30 13F ALLEGHENY TECH SC 01741R102 3,155 -325 -9.34 142 7.58 0.0009
2014-05-14 2014-03-31 13F ALLEGHENY TECH SC 01741R102 3,480 620 21.68 132 29.41 0.0009
2014-02-18 2013-12-31 13F ALLEGHENY TECH SC 01741R102 2,860 90 3.25 102 20.00 0.0007
2013-11-08 2013-09-30 13F ALLEGHENY TECH SC 01741R102 2,770 0 0.00 85 16.44 0.0007
2013-08-14 2013-06-30 13F ALLEGHENY TECH SC 01741R102 2,770 2,770 73 0.0007
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.