KAISER ALUMINUM CORP KALU
COM PAR $0.01 · Common Stock · CUSIP 483007704 · ISIN US4830077040
American metals manufacturer
- SectorMaterials
- IndustryRolling Drawing & Extruding of Nonferrous Metals
- HeadquartersFranklin, TN
- Founded1946
- Websitekaiseraluminum.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($14.8m this quarter). Holder counts are more reliable. Shares outstanding: 16.3m as of 2026-07-20, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $195.48. Options: 5 managers hold calls ($14.3m notional), 4 hold puts ($2.9m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 167 |
| Q4 2022 | 182 |
| Q1 2023 | 171 |
| Q2 2023 | 161 |
| Q3 2023 | 157 |
| Q4 2023 | 162 |
| Q1 2024 | 192 |
| Q2 2024 | 224 |
| Q3 2024 | 211 |
| Q4 2024 | 206 |
| Q1 2025 | 207 |
| Q2 2025 | 200 |
| Q3 2025 | 212 |
| Q4 2025 | 266 |
| Q1 2026 | 287 |
| Q2 2026 | 335 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 99 | 115 |
| Q4 2024 | 103 | 102 |
| Q1 2025 | 100 | 99 |
| Q2 2025 | 113 | 96 |
| Q3 2025 | 103 | 101 |
| Q4 2025 | 156 | 96 |
| Q1 2026 | 146 | 127 |
| Q2 2026 | 191 | 130 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $470.4k | $648.1k | 1.38 |
| Q4 2025 | $11.7m | $574.3k | 0.05 |
| Q1 2026 | $13.5m | $2.3m | 0.17 |
| Q2 2026 | $14.3m | $2.9m | 0.20 |
Biggest buyers
| FRANKLIN RESOURCES INC | Added | +266.0k |
| First Eagle Investment Management, LLC | Added | +166.1k |
| WESTFIELD CAPITAL MANAGEMENT CO LP | New | +163.5k |
| Assenagon Asset Management S.A. | New | +109.0k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Added | +104.4k |
| BESSEMER GROUP INC | Added | +79.5k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +79.4k |
| GOLDMAN SACHS GROUP INC | Added | +73.5k |
| FIRST TRUST ADVISORS LP | Added | +70.2k |
| PANAGORA ASSET MANAGEMENT INC | Added | +69.5k |
Biggest sellers
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -184.2k |
| BRIGHTLINE CAPITAL MANAGEMENT, LLC | Sold out | -175.0k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -153.4k |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | Reduced | -111.6k |
| Tributary Capital Management, LLC | Reduced | -100.5k |
| NFJ INVESTMENT GROUP, LLC | Reduced | -77.0k |
| Covalis Capital LLP | Sold out | -69.7k |
| Qube Research & Technologies Ltd | Reduced | -51.4k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -42.4k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -41.7k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $4.0m20.2k shares |
| JANE STREET GROUP, LLC | Added | $3.9m19.7k shares |
| PEAK6 LLC | Reduced | $2.8m14.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.8m14.2k shares |
| D. E. Shaw & Co., Inc. | New | $939.0k4.8k shares |
Biggest puts
| JANE STREET GROUP, LLC | Reduced | $1.3m6.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $821.6k4.2k shares |
| CITADEL ADVISORS LLC | Reduced | $528.2k2.7k shares |
| D. E. Shaw & Co., Inc. | New | $254.3k1.3k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution -1.3 pts · filed 2026-04-24 | 14.8% |
| STATE STREET CORP 13G · institution new · filed 2026-05-12 | 8.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 8.1% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.1% |
Fell to 5% or below in the last year: DIMENSIONAL FUND ADVISORS LP (4.7%, 2026-07-14), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (4.4%, 2026-05-15), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), MACQUARIE GROUP LTD (0.0%, 2026-02-13), BARROW HANLEY MEWHINNEY & STRAUSS LLC (4.8%, 2025-11-12)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 1 | $813.0k | — |
| Q1 2026 | 0 | — | 2 | $2.9m | — |
| Q2 2026 | 0 | — | 6 | $13.0m | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-04-29 | Harvey Keith President & CEO, director | Sold | $524.8k3.0k shares |
| 2026-04-29 | Grimley Richard P. Director | Sold | $261.4k1.5k shares |
| 2026-04-28 | West Neal E EVP & CFO · By West Family Trust | Sold | $866.5k5.0k shares |
| 2026-04-27 | Harvey Keith President & CEO, director | Sold | $8.2m47.0k shares |
| 2026-04-27 | Wilcox Brett Director · By Wilcox Revocable Trust | Sold | $2.6m15.0k shares |
| 2026-04-27 | DONNAN JOHN MALCOLM EVP, CAO and GC | Sold | $488.8k2.7k shares |
| 2026-04-27 | Gheorghe Iulian SVP - Adv Eng & Innovation | Sold | $30.5k175 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 2.9m $561.6m | Added +27.7k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 1.4m $276.5m | Added +104.4k |
| STATE STREET CORP 0.01% of their portfolio | 1.3m $257.7m | Reduced -15.4k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 775.9k $151.8m | Reduced -42.4k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 707.2k $138.3m | Added +37.4k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.20% of their portfolio | 679.4k $132.9m | Reduced -34.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 471.7k $92.3m | Added +67.7k |
| AMERICAN CENTURY COMPANIES INC 0.04% of their portfolio | 439.9k $86.1m | Reduced -38.9k |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC 0.25% of their portfolio | 419.1k $82.0m | Reduced -111.6k |
| Fisher Asset Management, LLC 0.02% of their portfolio | 352.8k $69.0m | Added +48.3k |
| First Eagle Investment Management, LLC 0.04% of their portfolio | 276.9k $54.2m | Added +166.1k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 272.4k $53.3m | Added +266.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 259.9k $50.8m | Reduced -20.9k |
| Invesco Ltd. 0.00% of their portfolio | 256.2k $50.1m | Reduced -12.4k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.91% of their portfolio | 232.2k $45.4m | Reduced -10.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 227.5k $44.5m | Added +73.5k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 196.0k $38.4m | Reduced -638 |
| MORGAN STANLEY 0.00% of their portfolio | 194.7k $38.1m | Added +22.5k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 186.0k $36.4m | Added +11.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 178.7k $35.0m | Reduced -153.4k |
| Nuveen, LLC 0.01% of their portfolio | 173.8k $34.0m | Added +9.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 170.2k $33.3m | Reduced -1.2k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.10% of their portfolio | 163.5k $32.0m | New |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 156.2k $30.6m | Added +35.5k |
| ALGERT GLOBAL LLC 0.29% of their portfolio | 125.6k $24.6m | Added +41.8k |
| PANAGORA ASSET MANAGEMENT INC 0.07% of their portfolio | 124.9k $24.4m | Added +69.5k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 115.6k $22.6m | Added +8.4k |
| BESSEMER GROUP INC 0.03% of their portfolio | 109.5k $21.4m | Added +79.5k |
| Assenagon Asset Management S.A. 0.01% of their portfolio | 109.0k $21.3m | New |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 108.4k $21.2m | Added +57.7k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 105.5k $20.6m | Added +4.0k |
| MACKENZIE FINANCIAL CORP 0.02% of their portfolio | 100.8k $19.7m | Added +68.2k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.35% of their portfolio | 100.4k $19.6m | Reduced -30.9k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 100.4k $19.6m | Added +4.4k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 91.2k $17.8m | Added +70.2k |
| ACADIAN ASSET MANAGEMENT LLC 0.02% of their portfolio | 88.1k $17.2m | Added +79.4k |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 86.8k $17.0m | Added +29.5k |
| CANADA LIFE ASSURANCE Co 0.03% of their portfolio | 84.9k $16.6m | Reduced -27.6k |
| Trexquant Investment LP 0.10% of their portfolio | 81.3k $15.9m | Added +38.2k |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 76.8k $15.0m | Reduced -33.0k |
| Tributary Capital Management, LLC 1.22% of their portfolio | 75.7k $14.8m | Reduced -100.5k |
| WINSLOW ASSET MANAGEMENT INC 2.44% of their portfolio | 71.8k $14.1m | Reduced -2.2k |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 66.1k $12.9m | Added +46.8k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 64.2k $12.6m | Reduced -184.2k |
| HRT FINANCIAL LP 0.03% of their portfolio | 61.2k $12.0m | New |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.02% of their portfolio | 58.3k $11.4m | Added +51.3k |
| Public Sector Pension Investment Board 0.03% of their portfolio | 55.6k $10.9m | Reduced -1.9k |
| HENNESSY ADVISORS INC 0.34% of their portfolio | 54.4k $10.6m | New |
| UBS Group AG 0.00% of their portfolio | 53.0k $10.4m | Reduced -16.5k |
| Empowered Funds, LLC 0.05% of their portfolio | 52.9k $10.3m | Reduced -23.9k |
| NORGES BANK 0.00% of their portfolio | 46.5k $9.1m | Not comparable |
| NFJ INVESTMENT GROUP, LLC 0.31% of their portfolio | 46.4k $9.1m | Reduced -77.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 45.3k $8.9m | Added +11.6k |
| Allspring Global Investments Holdings, LLC 0.01% of their portfolio | 44.2k $8.2m | Added +4.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 43.8k $8.6m | Added +6.5k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 43.7k $8.5m | Reduced -19.2k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 43.4k $8.5m | Reduced -4.9k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 42.2k $8.3m | Added +14.3k |
| ICON ADVISERS INC/CO 1.52% of their portfolio | 41.4k $8.1m | Reduced -5.1k |
| GREAT LAKES ADVISORS, LLC 0.06% of their portfolio | 41.1k $8.0m | Reduced -4.2k |
| 1492 Capital Management LLC 2.25% of their portfolio | 39.0k $7.6m | Reduced -4.5k |
| PDT Partners, LLC 0.40% of their portfolio | 38.6k $7.5m | Added +6.8k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 37.8k $7.4m | Reduced -16.2k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 37.4k $7.3m | Reduced -1.4k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 36.9k $7.1m | Added +8.7k |
| XTX Topco Ltd 0.09% of their portfolio | 35.8k $7.0m | Added +28.2k |
| Legal & General Group Plc 0.00% of their portfolio | 35.6k $7.0m | Added +193 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 34.0k $6.7m | Added +5.9k |
| Jump Financial, LLC 0.06% of their portfolio | 33.5k $6.6m | Added +29.2k |
| Jupiter Topco LLC 0.00% of their portfolio | 33.1k $6.5m | First filing |
| Swiss National Bank 0.00% of their portfolio | 32.5k $6.4m | Added +600 |
| THIRD AVENUE MANAGEMENT LLC 0.93% of their portfolio | 29.8k $5.8m | Reduced -33 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 27.8k $5.4m | Added +4.1k |
| CREDIT AGRICOLE S A 0.01% of their portfolio | 27.5k $5.4m | Added +15.0k |
| FMR LLC 0.00% of their portfolio | 27.2k $5.3m | Added +14.2k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 23.3k $4.6m | Added +5.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 22.5k $4.4m | Added +3.9k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 21.6k $4.2m | Reduced -41.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 21.2k $4.1m | Reduced -11.1k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 20.9k $2.5m | Added +2.1k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 20.6k $4.0m | Added +2.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 20.1k $3.9m | Reduced -503 |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 19.6k $3.8m | Reduced -14.2k |
| Man Group plc 0.01% of their portfolio | 18.0k $3.5m | Added +1.5k |
| CITIGROUP INC 0.00% of their portfolio | 17.6k $3.4m | Added +8.2k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 17.2k $3.4m | Added +3.3k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 15.9k $3.1m | Added +1.4k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 15.8k $3.1m | Added +4.5k |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 15.0k $2.9m | Added +9.2k |
| COOKSON PEIRCE & CO INC 0.10% of their portfolio | 14.8k $2.9m | Added +1.5k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 14.5k $2.8m | Added +1.9k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 14.2k $2.8m | Reduced -2.5k |
| Oliver Luxxe Assets LLC 0.38% of their portfolio | 13.2k $2.6m | Reduced -8.3k |
| Inspire Investing, LLC 0.11% of their portfolio | 13.2k $2.6m | Added +12.3k |
| INTECH INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 12.9k $2.5m | Added +2.3k |
| LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio | 12.9k $2.5m | New |
| NAVELLIER & ASSOCIATES INC 0.19% of their portfolio | 12.5k $2.5m | Added +2.1k |
| LPL Financial LLC 0.00% of their portfolio | 12.4k $2.4m | Reduced -4.7k |
| GABELLI FUNDS LLC 0.02% of their portfolio | 12.3k $2.4m | Reduced -22.8k |
| Vident Advisory, LLC 0.02% of their portfolio | 11.1k $2.2m | New |