Alcoa Corporation
CH ˙ SWX ˙ US0138721065
SecurityCH:AA / Alcoa Corporation
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership965,923 shares
Latest Disclosed Value $ 51,329,148
Alliancebernstein L.p. reports 198.72% increase in ownership of AA / Alcoa Corporation

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 965,923 shares of Alcoa Corporation (CH:AA) valued at $51,329,148 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 323,359 shares of Alcoa Corporation. This represents a change in shares of 198.72% 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 ALCOA COM 013872106 965,923 642,564 198.72 51,329 198.72 0.0166
2026-02-17 2025-12-31 13F ALCOA COM 013872106 323,359 -12,990 -3.86 17,183 55.33 0.0054
2025-11-14 2025-09-30 13F ALCOA COM 013872106 336,349 -3,749 -1.10 11,063 10.22 0.0035
2025-08-14 2025-06-30 13F ALCOA COM 013872106 340,098 -2,206 -0.64 10,036 -3.87 0.0033
2025-05-15 2025-03-31 13F ALCOA COM 013872106 342,304 3,917 1.16 10,440 -18.34 0.0038
2025-02-12 2024-12-31 13F ALCOA COM 013872106 338,387 587 0.17 12,784 -1.90 0.0043
2024-11-14 2024-09-30 13F ALCOA COM 013872106 337,800 76,835 29.44 13,032 25.54 0.0044
2024-08-14 2024-06-30 13F ALCOA COM 013872106 260,965 -13,459 -4.90 10,381 11.96 0.0036
2024-05-14 2024-03-31 13F ALCOA COM 013872106 274,424 6,639 2.48 9,273 1.85 0.0033
2024-02-14 2023-12-31 13F ALCOA COM 013872106 267,785 -15,197 -5.37 9,105 10.71 0.0035
2023-11-14 2023-09-30 13F ALCOA COM 013872106 282,982 -13,661 -4.61 8,223 -18.30 0.0035
2023-08-15 2023-06-30 13F ALCOA COM 013872106 296,643 1,469 0.50 10,065 -19.88 0.0041
2023-05-15 2023-03-31 13F ALCOA COM 013872106 295,174 -5,539 -1.84 12,563 -8.13 0.0054
2023-02-15 2022-12-31 13F ALCOA COM 013872106 300,713 -7,514 -2.44 13,673 31.79 0.0062
2022-11-15 2022-09-30 13F ALCOA COM 013872106 308,227 -27,330 -8.14 10,375 -32.17 0.0050
2022-08-15 2022-06-30 13F ALCOA COM 013872106 335,557 -195,391 -36.80 15,295 -68.00 0.0070
2022-05-13 2022-03-31 13F ALCOA COM 013872106 530,948 203,572 62.18 47,801 145.07 0.0184
2022-02-14 2021-12-31 13F ALCOA COM 013872106 327,376 149,417 83.96 19,505 123.96 0.0069
2021-11-10 2021-09-30 13F ALCOA COM 013872106 177,959 -11,673 -6.16 8,709 24.66 0.0034
2021-07-30 2021-06-30 13F ALCOA COM 013872106 189,632 -166,340 -46.73 6,986 -39.60 0.0028
2021-05-06 2021-03-31 13F ALCOA COM 013872106 355,972 -5,687 -1.57 11,566 38.75 0.0051
2021-02-08 2020-12-31 13F ALCOA COM 013872106 361,659 -2,282 -0.63 8,336 96.93 0.0039
2020-11-12 2020-09-30 13F ALCOA COM 013872106 363,941 -28,505 -7.26 4,233 -4.04 0.0023
2020-08-13 2020-06-30 13F ALCOA COM 013872106 392,446 66,304 20.33 4,411 119.56 0.0026
2020-05-14 2020-03-31 13F ALCOA COM 013872106 326,142 -2,801,315 -89.57 2,009 -97.01 0.0014
2020-02-18 2019-12-31 13F ALCOA COM 013872106 3,127,457 -23,876 -0.76 67,272 6.36 0.0382
2019-11-14 2019-09-30 13F ALCOA COM 013872106 3,151,333 -2,008,313 -38.92 63,247 -47.64 0.0394
2019-08-14 2019-06-30 13F ALCOA COM 013872106 5,159,646 -390,476 -7.04 120,787 -22.72 0.0750
2019-05-14 2019-03-31 13F ALCOA COM 013872106 5,550,122 118,423 2.18 156,291 8.25 0.1017
2019-02-13 2018-12-31 13F ALCOA COM 013872106 5,431,699 -395,724 -6.79 144,375 -38.68 0.1072
2018-11-08 2018-09-30 13F ALCOA COM 013872106 5,827,423 209,908 3.74 235,428 -10.60 0.1537
2018-08-13 2018-06-30 13F ALCOA COM 013872106 5,617,515 13,968 0.25 263,349 4.53 0.1833
2018-05-14 2018-03-31 13F ALCOA COM 013872106 5,603,547 324,456 6.15 251,935 -11.41 0.1821
2018-02-13 2017-12-31 13F ALCOA COM 013872106 5,279,091 3,559,958 207.08 284,385 254.83 0.2034
2017-11-13 2017-09-30 13F ALCOA COM 013872106 1,719,133 1,487,894 643.44 80,146 961.54 0.0600
2017-08-10 2017-06-30 13F ALCOA COM 013872106 231,239 122,909 113.46 7,550 102.58 0.0058
2017-05-11 2017-03-31 13F ALCOA COM 013872106 108,330 -1,322 -1.21 3,727 21.05 0.0030
2017-02-13 2016-12-31 13F ALCOA COM 013872106 109,652 109,652 3,079 0.0026
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.