(주)앤드
MX ˙ BMV ˙ US01741R1023
SecurityMX:ATI / ATI Inc.
InstitutionTwinbeech Capital Lp
Latest Disclosed Ownership1,671 shares
Latest Disclosed Value $ 243,064
Twinbeech Capital Lp ownership in ATI / ATI Inc.

On May 15, 2026 - Twinbeech Capital Lp filed a 13F-HR form disclosing ownership of 1,671 shares of ATI Inc. (MX:ATI) valued at $243,064 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 14, 2025 disclosing 0 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)
2026-05-15 2026-03-31 13F ATI COM 01741R102 1,671 1,671 243 0.0252
2025-11-14 2025-09-30 13F ATI COM 01741R102 0 -81,624 -100.00 0 -100.00
2025-08-14 2025-06-30 13F ATI COM 01741R102 81,624 39,126 92.07 7,047 218.72 0.1597
2025-05-15 2025-03-31 13F ATI COM 01741R102 42,498 42,498 2,211 0.0401
2025-02-14 2024-12-31 13F ATI COM 01741R102 0 -21,347 -100.00 0 -100.00
2024-11-14 2024-09-30 13F ATI COM 01741R102 21,347 -113,369 -84.15 1,428 -80.88 0.0273
2024-08-14 2024-06-30 13F ATI COM 01741R102 134,716 134,716 7,470 0.1470
2024-05-15 2024-03-31 13F ATI COM 01741R102 0 -67,672 -100.00 0 -100.00
2024-02-14 2023-12-31 13F ATI COM 01741R102 67,672 35,727 111.84 3,077 134.17 0.0497
2023-11-14 2023-09-30 13F ATI COM 01741R102 31,945 31,945 1,315 0.0253
2023-08-14 2023-06-30 13F ATI COM 01741R102 0 -34,137 -100.00 0 -100.00
2023-05-15 2023-03-31 13F ATI COM 01741R102 34,137 34,137 1,347 0.0273
2022-08-15 2022-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 0 -47,118 -100.00 0 -100.00
2022-05-16 2022-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 47,118 9,994 26.92 1,265 114.04 0.0557
2022-02-14 2021-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 37,124 37,124 591 0.0337
2021-08-16 2021-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 0 -21,000 -100.00 0 -100.00
2021-05-17 2021-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 21,000 -2,604 -11.03 442 11.62 0.0646
2021-02-16 2020-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 23,604 23,604 396 0.0643
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.