Alcoa Corporation
CH ˙ SWX ˙ US0138721065
SecurityCH:AA / Alcoa Corporation
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership478,755 shares
Latest Disclosed Value $ 31,755,819
Bnp Paribas Arbitrage, Sa ownership in AA / Alcoa Corporation

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 478,755 shares of Alcoa Corporation (CH:AA) valued at $31,755,819 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 81,811 shares of Alcoa Corporation. This represents a change in shares of 485.20% during the quarter.

Bnp Paribas Arbitrage, Sa has a history of taking positions in derivatives of the underlying security (AA) 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.

CH:AA / Alcoa Corporation 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)
2026-05-12 2026-03-31 13F Alcoa Equity 013872106 478,755 396,944 485.20 31,756 630.50 0.0016
2026-02-10 2025-12-31 13F Alcoa Equity 013872106 81,811 18,532 29.29 4,347 108.89 0.0020
2025-11-13 2025-09-30 13F Alcoa Equity 013872106 63,279 -136,117 -68.26 2,081 -64.63 0.0011
2025-08-14 2025-06-30 13F Alcoa Equity 013872106 199,396 50,362 33.79 5,884 29.46 0.0034
2025-05-14 2025-03-31 13F Alcoa Equity 013872106 149,034 -86,981 -36.85 4,546 -49.02 0.0027
2025-02-14 2024-12-31 13F Alcoa Equity 013872106 236,015 156,325 196.17 8,917 190.05 0.0050
2024-11-13 2024-09-30 13F Alcoa Equity 013872106 79,690 -100,876 -55.87 3,074 -57.20 0.0021
2024-08-13 2024-06-30 13F Alcoa Equity 013872106 180,566 -171,421 -48.70 7,183 -39.61 0.0059
2024-05-01 2024-03-31 13F Alcoa Equity 013872106 351,987 -96,048 -21.44 11,894 -21.93 0.0104
2024-02-14 2023-12-31 13F/A-2 Alcoa Equity 013872106 448,035 -254,616 -36.24 15,233 -25.40 0.0173
2024-02-07 2023-12-31 13F/A-1 Alcoa Equity 013872106 448,035 -254,616 15,233 0.0021
2024-02-07 2023-12-31 13F Alcoa Equity 013872106 448,035 15,233
2023-11-14 2023-09-30 13F Alcoa Equity 013872106 702,651 188,302 36.61 20,419 17.01 0.0262
2023-08-09 2023-06-30 13F Alcoa Equity 013872106 514,349 147,171 40.08 17,452 11.67 0.0218
2023-05-12 2023-03-31 13F ALCOA EQUITY 013872106 367,178 184,014 100.46 15,627 87.64 0.0219
2023-02-14 2022-12-31 13F Alcoa Equity 013872106 183,164 -394,991 -68.32 8,328 -57.20 0.0128
2022-11-16 2022-09-30 13F/A-1 Alcoa Equity 013872106 578,155 136,855 31.01 19,461 -3.25 0.0311
2022-11-15 2022-09-30 13F Alcoa Equity 013872106 578,155 136,855 19,461 0.0047
2022-08-12 2022-06-30 13F Alcoa Equity 013872106 441,300 -7,403 -1.65 20,114 -50.21 0.0314
2022-05-18 2022-03-31 13F/A-1 Alcoa Equity 013872106 448,703 326,392 266.85 40,397 454.36 0.0543
2022-02-09 2021-12-31 13F ALCOA EQUITY 013872106 122,311 76,991 169.88 7,287 228.69 0.0104
2021-11-16 2021-09-30 13F/A-1 ALCOA EQUITY 013872106 45,320 -31,255 -40.82 2,218 -21.41 0.0031
2021-11-12 2021-09-30 13F ALCOA EQUITY 013872106 188,874 112,299 2,197 0.0000
2021-08-10 2021-06-30 13F ALCOA EQUITY 013872106 76,575 -120,478 -61.14 2,821 -55.94 0.0037
2021-05-07 2021-03-31 13F ALCOA EQUITY 013872106 197,053 -4,011 -1.99 6,402 38.15 0.0094
2021-02-10 2020-12-31 13F ALCOA EQUITY 013872106 201,064 12,190 6.45 4,635 111.02 0.0086
2020-10-30 2020-09-30 13F ALCOA EQUITY 013872106 188,874 -138,127 -42.24 2,197 -40.24 0.0031
2020-08-06 2020-06-30 13F ALCOA EQUITY 013872106 327,001 -250,054 -43.33 3,675 3.40 0.0065
2020-05-13 2020-03-31 13F ALCOA EQUITY 013872106 577,055 -137,321 -19.22 3,555 -76.87 0.0073
2020-02-12 2019-12-31 13F ALCOA EQUITY 013872106 714,376 404,121 130.25 15,366 146.80 0.0280
2019-11-07 2019-09-30 13F ALCOA EQUITY 013872106 310,255 -448,301 -59.10 6,227 -64.94 0.0111
2019-07-30 2019-06-30 13F ALCOA EQUITY 013872106 758,556 479,617 171.94 17,758 126.09 0.0354
2019-04-25 2019-03-31 13F ALCOA EQUITY 013872106 278,939 -206,114 -42.49 7,855 -39.08 0.0170
2019-02-12 2018-12-31 13F ALCOA EQUITY 013872106 485,053 365,321 305.12 12,893 166.53 0.0305
2018-11-07 2018-09-30 13F ALCOA EQUITY 013872106 119,732 -147,561 -55.21 4,837 -61.40 0.0071
2018-07-25 2018-06-30 13F ALCOA EQUITY 013872106 267,293 -16,097 -5.68 12,531 -1.66 0.0209
2018-05-11 2018-03-31 13F ALCOA EQUITY 013872106 283,390 242,787 597.95 12,741 482.58 0.0239
2018-03-05 2017-12-31 13F/A-1 ALCOA EQUITY 013872106 40,603 -6,697 -14.16 2,187 -0.82 0.0039
2018-02-01 2017-12-31 13F ALCOA EQUITY 013872106 40,603 -6,697 2,187
2017-11-03 2017-09-30 13F ALCOA STOCK 013872106 47,300 -4,365 -8.45 2,205 30.78 0.0054
2017-08-03 2017-06-30 13F ALCOA STOCK 013872106 51,665 -39,208 -43.15 1,687 -46.07 0.0051
2017-05-03 2017-03-31 13F ALCOA STOCK 013872106 90,873 90,873 3,126 0.0083
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
(%)
2025-05-14 2025-03-31 13F Alcoa Option Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F Alcoa Option Call 825 0.00 3,117 -2.07 n/a n/a n/a
2024-11-13 2024-09-30 13F Alcoa Option Call 825 3,183 n/a n/a n/a
2024-05-01 2024-03-31 13F Alcoa Option Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-07 2023-12-31 13F/A Alcoa Option Call 286 972 n/a n/a n/a
2024-02-14 2023-12-31 13F/A Alcoa Option Call 286 972 n/a n/a n/a
2024-02-07 2023-12-31 13F Alcoa Option Call 286 972 n/a n/a n/a
2023-05-12 2023-03-31 13F Alcoa Option Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F Alcoa Option Call 650 -71.11 2,956 -60.98 n/a n/a n/a
2022-11-16 2022-09-30 13F/A Alcoa Option Call 2,250 7,574 n/a n/a n/a
2022-11-15 2022-09-30 13F Alcoa Option Call 2,250 7,574 n/a n/a n/a
2022-08-11 2022-06-30 13F Alcoa Option Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-18 2022-03-31 13F/A Alcoa Option Call 1,675 15,080 n/a n/a n/a
2022-02-09 2021-12-31 13F ALCOA OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-16 2021-09-30 13F/A ALCOA OPTION Call 65 3,150.00 318 4,442.86 n/a n/a n/a
2021-11-12 2021-09-30 13F ALCOA OPTION Call 925 1,076 n/a n/a n/a
2021-08-10 2021-06-30 13F ALCOA OPTION Call 2 0.00 7 16.67 n/a n/a n/a
2021-05-07 2021-03-31 13F ALCOA OPTION Call 2 -99.70 6 -99.61 n/a n/a n/a
2021-02-10 2020-12-31 13F ALCOA OPTION Call 672 -27.35 1,549 44.00 n/a n/a n/a
2020-10-30 2020-09-30 13F ALCOA OPTION Call 925 0.00 1,076 3.46 n/a n/a n/a
2020-08-06 2020-06-30 13F ALCOA OPTION Call 925 37.44 1,040 150.97 n/a n/a n/a
2020-05-13 2020-03-31 13F ALCOA OPTION Call 673 415 n/a n/a n/a
2018-05-11 2018-03-31 13F ALCOA OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-03-05 2017-12-31 13F/A ALCOA OPTION Call 155,600 8,382 n/a n/a n/a
2018-02-01 2017-12-31 13F ALCOA OPTION Call 155,600 8,382 n/a n/a n/a
2017-11-03 2017-09-30 13F ALCOA OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-03 2017-06-30 13F ALCOA OPTION Call 163 16 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
(%)
2026-02-10 2025-12-31 13F Alcoa Option Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F Alcoa Option Put 500 1,644 n/a n/a n/a
2025-05-14 2025-03-31 13F Alcoa Option Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F Alcoa Option Put 998 3,770 n/a n/a n/a
2022-11-15 2022-09-30 13F/A Alcoa Option Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-15 2022-09-30 13F Alcoa Option Put 0 0 n/a n/a n/a
2022-08-12 2022-06-30 13F Alcoa Option Put 300 0.00 1,367 -49.37 n/a n/a n/a
2022-05-18 2022-03-31 13F/A Alcoa Option Put 300 -48.72 2,701 -22.53 n/a n/a n/a
2022-02-09 2021-12-31 13F ALCOA OPTION Put 585 105.26 3,485 150.00 n/a n/a n/a
2021-11-16 2021-09-30 13F/A ALCOA OPTION Put 285 0.00 1,395 32.89 n/a n/a n/a
2021-11-12 2021-09-30 13F ALCOA OPTION Put 2,589 3,011 n/a n/a n/a
2021-08-10 2021-06-30 13F ALCOA OPTION Put 285 0.00 1,050 13.41 n/a n/a n/a
2021-05-07 2021-03-31 13F ALCOA OPTION Put 285 -88.81 926 -84.24 n/a n/a n/a
2021-02-10 2020-12-31 13F ALCOA OPTION Put 2,546 -1.66 5,869 94.89 n/a n/a n/a
2020-10-30 2020-09-30 13F ALCOA OPTION Put 2,589 0.00 3,011 3.47 n/a n/a n/a
2020-08-06 2020-06-30 13F ALCOA OPTION Put 2,589 115.75 2,910 293.78 n/a n/a n/a
2020-05-13 2020-03-31 13F ALCOA OPTION Put 1,200 200.00 739 -14.07 n/a n/a n/a
2020-02-12 2019-12-31 13F ALCOA OPTION Put 400 0.00 860 7.23 n/a n/a n/a
2019-11-07 2019-09-30 13F ALCOA OPTION Put 400 0.00 803 -14.32 n/a n/a n/a
2019-07-30 2019-06-30 13F ALCOA OPTION Put 400 0.00 936 -16.87 n/a n/a n/a
2019-04-25 2019-03-31 13F ALCOA OPTION Put 400 1,126 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.