ATI Inc.
MX ˙ BMV ˙ US01741R1023
SecurityMX:ATI / ATI Inc.
InstitutionHsbc Holdings Plc
Latest Disclosed Ownership28,788 shares
Latest Disclosed Value $ 4,159,441
Hsbc Holdings Plc ownership in ATI / ATI Inc.

On April 30, 2026 - Hsbc Holdings Plc filed a 13F-HR form disclosing ownership of 28,788 shares of ATI Inc. (MX:ATI) valued at $4,159,441 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 20, 2026 disclosing 90,781 shares of ATI Inc.. This represents a change in shares of -68.29% during the quarter.

Hsbc Holdings Plc has a history of taking positions in derivatives of the underlying security (ATI) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:ATI / ATI Inc. Historical Put/Call Ratio
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)
2026-04-30 2026-03-31 13F ATI COM 01741R102 28,788 -61,993 -68.29 4,159 -60.39 0.0003
2026-03-20 2025-12-31 13F/A-1 ATI COM 01741R102 90,781 63,518 232.98 10,499 376.58 0.0006
2026-03-06 2025-12-31 13F ATI COM 01741R102 90,781 63,518 232.98 10,499 376.58 0.0005
2025-11-13 2025-09-30 13F ATI COM 01741R102 27,263 -8,421 -23.60 2,204 -28.87 0.0012
2025-08-13 2025-06-30 13F ATI COM 01741R102 35,684 30,962 655.70 3,098 1,164.08 0.0019
2025-05-14 2025-03-31 13F ATI COM 01741R102 4,722 -19,186 -80.25 246 -81.44 0.0002
2025-02-14 2024-12-31 13F ATI COM 01741R102 23,908 -19,880 -45.40 1,320 -54.58 0.0008
2024-11-14 2024-09-30 13F ATI COM 01741R102 43,788 -31,199 -41.61 2,907 -31.10 0.0017
2024-08-12 2024-06-30 13F ATI COM 01741R102 74,987 16,062 27.26 4,218 39.90 0.0026
2024-05-15 2024-03-31 13F ATI COM 01741R102 58,925 -5,090 -7.95 3,015 2.59 0.0020
2024-02-12 2023-12-31 13F ATI COM 01741R102 64,015 -63,404 -49.76 2,940 -44.66 0.0026
2023-11-13 2023-09-30 13F ATI COM 01741R102 127,419 46,869 58.19 5,312 49.23 0.0055
2023-08-11 2023-06-30 13F ATI COM 01741R102 80,550 -60,965 -43.08 3,560 -35.77 0.0036
2023-05-15 2023-03-31 13F ATI COM 01741R102 141,515 -100,637 -41.56 5,542 -23.54 0.0066
2023-02-14 2022-12-31 13F ATI COM 01741R102 242,152 -164,221 -40.41 7,247 -34.27 0.0083
2022-11-14 2022-09-30 13F ATI COM 01741R102 406,373 -212,022 -34.29 11,025 -21.63 0.0180
2022-08-11 2022-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 618,395 230,738 59.52 14,068 33.45 0.0196
2022-05-16 2022-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 387,657 -196,147 -33.60 10,542 14.14 0.0128
2022-02-11 2021-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 583,804 53,501 10.09 9,236 2.87 0.0085
2021-11-12 2021-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 530,303 101,048 23.54 8,978 0.52 0.0090
2021-08-13 2021-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 429,255 60,360 16.36 8,932 14.87 0.0095
2021-05-14 2021-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 368,895 -60,859 -14.16 7,776 7.96 0.0091
2021-02-25 2020-12-31 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 429,754 -3,957 -0.91 7,203 84.74 0.0096
2021-02-12 2020-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 429,754 -3,957 7,203 1,710.2570
2020-11-12 2020-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 433,711 416,093 2,361.75 3,899 2,078.21 0.0062
2020-08-14 2020-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 17,618 -6,871 -28.06 179 -15.17 0.0003
2020-05-15 2020-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 24,489 -4,751 -16.25 211 -64.72 0.0005
2020-02-14 2019-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 29,240 16,306 126.07 598 128.24 0.0010
2019-11-14 2019-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 12,934 0 0.00 262 -19.63 0.0005
2019-08-13 2019-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 12,934 1,479 12.91 326 11.26 0.0006
2019-05-15 2019-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 11,455 -33,915 -74.75 293 -70.31 0.0005
2019-02-13 2018-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 45,370 -24,420 -34.99 987 -52.09 0.0018
2018-11-13 2018-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 69,790 50,432 260.52 2,060 323.87 0.0033
2018-08-10 2018-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 19,358 -13,599 -41.26 486 -37.77 0.0009
2018-05-11 2018-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 32,957 13,981 73.68 781 70.52 0.0012
2018-02-14 2017-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 18,976 -14,134 -42.69 458 -42.10 0.0007
2017-11-14 2017-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 33,110 15,168 84.54 791 158.50 0.0013
2017-08-14 2017-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 17,942 -366 -2.00 306 -6.71 0.0006
2017-05-15 2017-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 18,308 -19,825 -51.99 328 -46.05 0.0007
2017-02-09 2016-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 38,133 -7,429 -16.31 608 -26.21 0.0014
2016-11-14 2016-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 45,562 -3,042 -6.26 824 32.90 0.0021
2016-08-12 2016-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 48,604 -1,650 -3.28 620 -24.30 0.0017
2016-05-13 2016-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 50,254 10,943 27.84 819 85.29 0.0023
2016-02-12 2015-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 39,311 5,725 17.05 442 -7.14 0.0011
2015-11-12 2015-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 33,586 26,141 351.12 476 111.56 0.0012
2015-08-13 2015-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 7,445 -45,206 -85.86 225 -85.76 0.0005
2015-05-14 2015-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 52,651 -10,698 -16.89 1,580 -28.28 0.0030
2015-02-13 2014-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 63,349 -19,203 -23.26 2,203 -28.36 0.0046
2014-11-18 2014-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 82,552 18,887 29.67 3,075 7.29 0.0064
2014-08-14 2014-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 63,665 -10,986 -14.72 2,866 1.92 0.0062
2014-05-14 2014-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 74,651 12,271 19.67 2,812 26.55 0.0067
2014-02-14 2013-12-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 62,380 -8,609 -12.13 2,222 2.68 0.0058
2013-11-14 2013-09-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 70,989 16,796 30.99 2,164 51.75 0.0059
2013-10-10 2013-06-30 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 54,193 7,676 16.50 1,426 -3.32 0.0043
2013-08-14 2013-06-30 13F ALLEGHENY TECHNOLOGIES COM 01741R102 54,193 1,426
2013-10-10 2013-03-31 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 46,517 25,719 123.66 1,475 133.76 0.0054
2013-05-22 2013-03-31 13F ALLEGHENY TECHNOLOGIES COM 01741R102 46,517 1,475
2013-06-17 2012-12-31 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 20,798 2,650 631 0.0024
2013-10-10 2012-12-31 13F/A-2 ALLEGHENY TECHNOLOGIES COM 01741R102 20,798 2,650 14.60 631 9.17 0.0025
2013-06-21 2012-09-30 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 18,232 1,978 581 0.0023
2013-10-11 2012-09-30 13F/A-2 ALLEGHENY TECHNOLOGIES COM 01741R102 18,148 1,894 11.65 578 11.58 0.0023
2013-10-11 2012-06-30 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 16,254 -2,929 -15.27 518 -34.35 0.0023
2013-10-11 2012-03-31 13F/A-1 ALLEGHENY TECHNOLOGIES COM 01741R102 19,183 19,183 789 0.0035
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-05-15 2024-03-31 13F ATI COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F ATI COM Call 24,700 -40.19 1,135 -34.09 n/a n/a n/a
2023-11-13 2023-09-30 13F ATI COM Call 41,300 1,723 n/a n/a n/a
2015-11-12 2015-09-30 13F ALLEGHENY TECHNOLOGIES COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-08-13 2015-06-30 13F ALLEGHENY TECHNOLOGIES COM Call 49,380 1,491 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2023-08-11 2023-06-30 13F ATI COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F ATI COM Put 71,700 0.00 2,807 30.86 n/a n/a n/a
2023-02-14 2022-12-31 13F ATI COM Put 71,700 -71.38 2,146 -68.44 n/a n/a n/a
2022-11-14 2022-09-30 13F ATI COM Put 250,500 40.10 6,796 67.06 n/a n/a n/a
2022-08-11 2022-06-30 13F ALLEGHENY TECHNOLOGIES COM Put 178,800 4,068 n/a n/a n/a
2019-05-15 2019-03-31 13F ALLEGHENY TECHNOLOGIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-13 2018-12-31 13F ALLEGHENY TECHNOLOGIES COM Put 11,200 0.00 244 -26.28 n/a n/a n/a
2018-11-13 2018-09-30 13F ALLEGHENY TECHNOLOGIES COM Put 11,200 0.00 331 17.79 n/a n/a n/a
2018-08-10 2018-06-30 13F ALLEGHENY TECHNOLOGIES COM Put 11,200 0.00 281 6.04 n/a n/a n/a
2018-05-11 2018-03-31 13F ALLEGHENY TECHNOLOGIES COM Put 11,200 265 n/a n/a n/a
2015-11-12 2015-09-30 13F ALLEGHENY TECHNOLOGIES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-08-13 2015-06-30 13F ALLEGHENY TECHNOLOGIES COM Put 447 13 n/a n/a n/a
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.