Kaiser Aluminum Corporation
DE ˙ DB ˙ US4830077040
158,00 € ↑1,00 (0,64%)
2026-06-05
DEL PRIS
SecurityDE:KLU1 / Kaiser Aluminum Corporation
InstitutionBarclays Plc
Latest Disclosed Ownership28,758 shares
Latest Disclosed Value $ 3,303,143
Barclays Plc ownership in KLU1 / Kaiser Aluminum Corporation

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 28,758 shares of Kaiser Aluminum Corporation (DE:KLU1) valued at $2,861,421 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 25,790 shares of Kaiser Aluminum Corporation. This represents a change in shares of 11.51% during the quarter. The current value of the position is $4,543,764 USD.

Barclays Plc has a history of taking positions in derivatives of the underlying security (KLU1) 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.

DE:KLU1 / Kaiser Aluminum 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)
2026-02-13 2025-12-31 13F KAISER ALUMINUM COM 483007704 28,758 2,968 11.51 3,303 66.06 0.0008
2026-03-31 2025-09-30 13F/A-3 KAISER ALUMINUM COM 483007704 25,790 -8,407 -24.58 1,990 -27.20 0.0004
2026-03-19 2025-09-30 13F/A-2 KAISER ALUMINUM COM 483007704 27,454 -6,743 1,991 0.0005
2025-11-12 2025-09-30 13F KAISER ALUMINUM COM 483007704 25,790 -8,407 1,990 0.0004
2026-02-27 2025-06-30 13F/A-2 KAISER ALUMINUM COM 483007704 34,197 13,166 62.60 2,732 114.44 0.0006
2025-08-14 2025-06-30 13F/A-1 KAISER ALUMINUM COM 483007704 34,197 13,166 3 0.0006
2025-08-13 2025-06-30 13F KAISER ALUMINUM COM 483007704 34,197 13,166 3 0.0002
2026-03-17 2025-03-31 13F/A-1 KAISER ALUMINUM COM 483007704 21,031 -7,800 -27.05 1,275 -37.09 0.0004
2025-05-15 2025-03-31 13F KAISER ALUMINUM COM 483007704 21,031 -7,800 1 0.0004
2026-03-19 2024-12-31 13F/A-1 KAISER ALUMINUM COM 483007704 28,831 1,377 5.02 2,026 1.76 0.0006
2025-02-13 2024-12-31 13F KAISER ALUMINUM COM 483007704 28,831 1,377 2 0.0006
2026-03-31 2024-09-30 13F/A-2 KAISER ALUMINUM COM 483007704 27,454 13,813 101.26 1,991 65.97 0.0005
2024-11-19 2024-09-30 13F/A-1 KAISER ALUMINUM COM 483007704 27,454 13,813 2 0.0005
2024-11-15 2024-09-30 13F KAISER ALUMINUM COM 483007704 27,454 13,813 2 0.0002
2026-03-23 2024-06-30 13F/A-1 KAISER ALUMINUM COM 483007704 13,641 -2,314 -14.50 1,199 -15.86 0.0004
2024-08-14 2024-06-30 13F KAISER ALUMINUM COM 483007704 13,641 -2,314 1 0.0004
2026-03-24 2024-03-31 13F/A-1 KAISER ALUMINUM COM 483007704 15,955 -10,694 -40.13 1,426 -24.88 0.0005
2024-05-15 2024-03-31 13F KAISER ALUMINUM COM 483007704 15,955 -10,694 1 0.0005
2026-03-25 2023-12-31 13F/A-1 KAISER ALUMINUM COM 483007704 26,649 17,503 191.37 1,897 175.73 0.0007
2024-02-15 2023-12-31 13F KAISER ALUMINUM COM 483007704 26,649 17,503 2 0.0007
2026-03-26 2023-09-30 13F/A-1 KAISER ALUMINUM COM 483007704 9,146 556 6.47 688 11.87 0.0004
2023-11-07 2023-09-30 13F KAISER ALUMINUM COM 483007704 9,146 556 1 0.0004
2026-03-30 2023-06-30 13F/A-2 KAISER ALUMINUM COM 483007704 8,590 470 5.79 615 1.65 0.0004
2023-09-20 2023-06-30 13F/A-1 KAISER ALUMINUM COM 483007704 8,590 470 1 0.0004
2023-08-03 2023-06-30 13F KAISER ALUMINUM COM 483007704 8,590 470 1 0.0004
2026-03-30 2023-03-31 13F/A-1 KAISER ALUMINUM COM 483007704 8,120 429 5.58 606 3.60 0.0003
2023-05-04 2023-03-31 13F KAISER ALUMINUM COM 483007704 8,120 429 1 0.0003
2026-03-30 2022-12-31 13F/A-1 KAISER ALUMINUM COM 483007704 7,691 3,497 83.38 584 127.24 0.0003
2023-02-13 2022-12-31 13F KAISER ALUMINUM COM 483007704 7,691 3,497 1 0.0003
2022-11-03 2022-09-30 13F KAISER ALUMINUM COM 483007704 4,194 -1,534 -26.78 257 -43.39 0.0003
2022-08-12 2022-06-30 13F KAISER ALUMINUM COM 483007704 5,728 -7,178 -55.62 454 -62.66 0.0003
2022-05-16 2022-03-31 13F KAISER ALUMINUM COM 483007704 12,906 -7,748 -37.51 1,216 -37.32 0.0010
2022-02-23 2021-12-31 13F/A-1 KAISER ALUMINUM COM 483007704 20,654 7,897 61.90 1,940 39.57 0.0007
2022-02-14 2021-12-31 13F KAISER ALUMINUM COM 483007704 20,654 7,897 1,940 0.0007
2021-11-09 2021-09-30 13F KAISER ALUMINUM COM 483007704 12,757 4,132 47.91 1,390 30.52 0.0006
2021-08-13 2021-06-30 13F KAISER ALUMINUM COM 483007704 8,625 -13,159 -60.41 1,065 -55.75 0.0005
2021-05-13 2021-03-31 13F KAISER ALUMINUM COM 483007704 21,784 1,729 8.62 2,407 21.32 0.0013
2021-02-11 2020-12-31 13F KAISER ALUMINUM COM 483007704 20,055 -2,025 -9.17 1,984 67.71 0.0010
2020-11-12 2020-09-30 13F KAISER ALUMINUM COM 483007704 22,080 3,633 19.69 1,183 -12.95 0.0007
2020-08-12 2020-06-30 13F KAISER ALUMINUM COM 483007704 18,447 2,789 17.81 1,359 25.37 0.0011
2020-05-13 2020-03-31 13F KAISER ALUMINUM COM 483007704 15,658 -9,059 -36.65 1,084 -60.45 0.0009
2020-02-10 2019-12-31 13F KAISER ALUMINUM COM 483007704 24,717 5,883 31.24 2,741 47.13 0.0015
2019-11-15 2019-09-30 13F/A-1 KAISER ALUMINUM COM 483007704 18,834 -9,485 -33.49 1,863 -32.60 0.0012
2019-11-14 2019-09-30 13F KAISER ALUMINUM COM 483007704 18,834 -9,485 1,863 430.7277
2019-08-14 2019-06-30 13F KAISER ALUMINUM COM 483007704 28,319 8,470 42.67 2,764 33.01 0.0017
2019-05-15 2019-03-31 13F KAISER ALUMINUM COM 483007704 19,849 13,617 218.50 2,078 273.74 0.0014
2019-02-14 2018-12-31 13F KAISER ALUMINUM COM 483007704 6,232 -12,575 -66.86 556 -72.89 0.0004
2018-11-14 2018-09-30 13F KAISER ALUMINUM COM 483007704 18,807 9,204 95.85 2,051 105.10 0.0014
2018-08-14 2018-06-30 13F KAISER ALUMINUM COM 483007704 9,603 -8,628 -47.33 1,000 -45.62 0.0009
2018-05-15 2018-03-31 13F KAISER ALUMINUM COM 483007704 18,231 12,919 243.20 1,839 223.77 0.0014
2018-02-14 2017-12-31 13F KAISER ALUMINUM COM 483007704 5,312 -32 -0.60 568 3.09 0.0005
2017-11-14 2017-09-30 13F KAISER ALUMINUM COM 483007704 5,344 1,100 25.92 551 46.54 0.0006
2017-08-14 2017-06-30 13F KAISER ALUMINUM COM 483007704 4,244 -2,422 -36.33 376 -29.46 0.0004
2017-05-15 2017-03-31 13F KAISER ALUMINUM COM 483007704 6,666 -1,431 -17.67 533 -15.26 0.0006
2017-02-14 2016-12-31 13F KAISER ALUMINUM COM 483007704 8,097 2,851 54.35 629 38.55 0.0007
2016-11-14 2016-09-30 13F KAISER ALUMINUM COM 483007704 5,246 2,720 107.68 454 98.25 0.0005
2016-08-12 2016-06-30 13F KAISER ALUMINUM COM 483007704 2,526 2,021 400.20 229 445.24 0.0003
2016-05-16 2016-03-31 13F KAISER ALUMINUM COM 483007704 505 211 71.77 42 68.00 0.0001
2016-02-12 2015-12-31 13F KAISER ALUMINUM COM 483007704 294 -1,189 -80.18 25 -78.81 0.0000
2015-11-13 2015-09-30 13F KAISER ALUMINUM COM 483007704 1,483 -13,065 -89.81 118 -90.23 0.0001
2015-08-14 2015-06-30 13F KAISER ALUMINUM COM 483007704 14,548 6,357 77.61 1,208 93.90 0.0014
2015-05-19 2015-03-31 13F/A-1 KAISER ALUMINUM COM 483007704 8,191 -911 -10.01 623 -3.71 0.0007
2015-05-14 2015-03-31 13F KAISER ALUMINUM COM 483007704 8,191 623
2015-02-13 2014-12-31 13F KAISER ALUMINUM COM 483007704 9,102 7,941 683.98 647 643.68 0.0006
2014-11-14 2014-09-30 13F KAISER ALUMINUM COM 483007704 1,161 846 268.57 87 295.45 0.0001
2014-08-14 2014-06-30 13F KAISER ALUMINUM COM 483007704 315 -53,528 -99.41 22 -99.42 0.0000
2014-05-15 2014-03-31 13F KAISER ALUMINUM COM 483007704 53,843 50,898 1,728.29 3,823 1,764.88 0.0043
2014-02-13 2013-12-31 13F KAISER ALUMINUM COM 483007704 2,945 -6,215 -67.85 205 -68.46 0.0002
2013-11-14 2013-09-30 13F KAISER ALUMINUM COM 483007704 9,160 -3,549 -27.93 650 -17.41 0.0008
2013-08-14 2013-06-30 13F KAISER ALUMINUM COM 483007704 12,709 12,709 787 0.0010
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
(%)
2019-08-14 2019-06-30 13F KAISER ALUMINUM OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-15 2019-03-31 13F KAISER ALUMINUM OPT Call 6,000 628 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
(%)
2019-08-14 2019-06-30 13F KAISER ALUMINUM OPT Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-15 2019-03-31 13F KAISER ALUMINUM OPT Put 6,000 628 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.