Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
276 institutional managers reported holding KALU for the quarter ended Mar 31, 2026. Together they hold about 94% of shares outstanding; the top 10 hold 59%. 50 opened new positions; 40 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 2.84M | 16.88% | $342.6M | trimmed -5.1% | ≤2013 |
| Vanguard Group | 2.11M | 12.54% | $254.4M | unchanged | ≤2013 |
| State Street | 1.33M | 7.91% | $160.6M | added +38% | ≤2013 |
| Dimensional Fund Advisors | 818.3k | 4.86% | $98.6M | trimmed -1.6% | ≤2013 |
| Nomura Asset Management International INC. | 714.2k | 4.24% | $86.1M | trimmed -21.3% | 2025 Q4 |
| Barrow Hanley Mewhinney & Strauss LLC | 530.7k | 3.15% | $63.9M | trimmed -5.9% | 2022 Q2 |
| American Century Companies INC | 478.8k | 2.84% | $57.7M | trimmed -19.3% | 2017 Q4 |
| Geode Capital | 404.0k | 2.40% | $48.7M | added +2.7% | ≤2013 |
| Wellington Management | 332.1k | 1.97% | $40.0M | trimmed -31% | 2024 Q1 |
| Fisher Investments | 304.5k | 1.81% | $36.7M | added +93.9% | 2018 Q2 |
| Charles Schwab Investment Management | 280.8k | 1.67% | $33.8M | trimmed -3.1% | ≤2013 |
| Invesco | 268.6k | 1.59% | $32.4M | added +77.3% | ≤2013 |
| Arrowstreet Capital | 248.4k | 1.48% | $29.9M | trimmed -8.6% | 2025 Q2 |
| Systematic Financial Management LP | 243.0k | 1.44% | $29.3M | trimmed -5.9% | ≤2013 |
| BNY Mellon | 196.7k | 1.17% | $23.7M | trimmed -0.8% | ≤2013 |
| Tributary Capital Management, LLC | 176.2k | 1.05% | $21.2M | trimmed -24.3% | 2020 Q1 |
| Brightline Capital Management, LLC (focused) | 175.0k | 1.04% | $21.1M | added +4.2% | 2025 Q4 |
| Northern Trust | 174.6k | 1.04% | $21.0M | added +2.6% | ≤2013 |
| Morgan Stanley | 172.2k | 1.02% | $20.7M | trimmed -18.1% | ≤2013 |
| Bank OF America CORP /DE/ | 171.4k | 1.02% | $20.6M | added +0.9% | ≤2013 |
| Nuveen | 164.1k | 0.97% | $19.8M | added +222.6% | 2019 Q2 |
| Goldman Sachs | 154.0k | 0.91% | $18.6M | trimmed -14.3% | ≤2013 |
| Bridgeway Capital Management, LLC | 131.3k | 0.78% | $15.8M | added +4.7% | 2024 Q4 |
| NFJ Investment Group, LLC | 123.4k | 0.73% | $14.9M | unchanged | 2021 Q1 |
| Two Sigma | 120.6k | 0.72% | $14.5M | opened | 2026 Q1 |
| Canada Life Assurance CO | 112.5k | 0.67% | $13.6M | added +153.6% | 2013 Q4 |
| First Eagle Investment Management | 110.8k | 0.66% | $13.3M | trimmed -24.6% | 2023 Q2 |
| Hotchkis & Wiley Capital Management LLC | 109.8k | 0.65% | $13.2M | trimmed -26.5% | 2025 Q3 |
| UBS | 106.8k | 0.63% | $12.9M | added +14.9% | ≤2013 |
| Principal Financial Group INC | 101.5k | 0.60% | $12.2M | added +32.4% | ≤2013 |
| D. E. Shaw | 96.0k | 0.57% | $11.6M | added +52.4% | 2023 Q2 |
| Algert Global LLC | 83.7k | 0.50% | $10.1M | added +23.1% | 2023 Q1 |
| Empowered Funds, LLC | 76.8k | 0.46% | $9.3M | added +3.8% | 2024 Q4 |
| Winslow Asset Management INC | 74.0k | 0.44% | $8.9M | trimmed -2.4% | ≤2013 |
| Covalis Capital LLP | 69.7k | 0.41% | $8.4M | opened | 2026 Q1 |
| Millennium Management | 63.3k | 0.38% | $7.6M | added +62.9% | 2025 Q3 |
| SEI Investments CO | 62.8k | 0.37% | $7.6M | added +59.2% | 2015 Q2 |
| Qube Research & Technologies LTD | 57.9k | 0.34% | $7.0M | opened | 2026 Q1 |
| Public Sector Pension Investment Board | 57.4k | 0.34% | $6.9M | added +3.3% | ≤2013 |
| Victory Capital Management INC | 57.3k | 0.34% | $6.9M | added +478.9% | 2013 Q3 |
| Panagora Asset Management INC | 55.4k | 0.33% | $6.7M | added +90.8% | 2025 Q3 |
| Envestnet Asset Management INC | 54.0k | 0.32% | $6.5M | trimmed -15% | 2020 Q1 |
| Jane Street | 50.7k | 0.30% | $6.1M | added +1.4% | 2021 Q1 |
| Rhumbline Advisers | 48.3k | 0.29% | $5.8M | added +1.4% | ≤2013 |
| Icon Advisers INC/CO | 46.5k | 0.28% | $5.6M | trimmed -30.1% | 2023 Q2 |
| Great Lakes Advisors, LLC | 45.3k | 0.27% | $5.5M | unchanged | 2023 Q1 |
| 1492 Capital Management LLC | 43.5k | 0.26% | $5.2M | added +11.6% | 2025 Q2 |
| Trexquant Investment LP | 43.1k | 0.26% | $5.2M | opened | 2026 Q1 |
| Allspring Global Investments Holdings, LLC | 39.7k | 0.24% | $4.8M | trimmed -4.7% | 2025 Q4 |
| Ameriprise Financial INC | 38.7k | 0.23% | $4.7M | trimmed -18.1% | ≤2013 |
Largest 50 of 276 shown; the full ranked, searchable register is at boothcheck.com/holders/KALU. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.