Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
237 institutional managers reported holding SKM for the quarter ended Mar 31, 2026. Together they hold about 15% of shares outstanding; the top 10 hold 9%. 74 opened new positions; 22 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 4.43M | 2.03% | $129.8M | added +71.4% | ≤2013 |
| Nomura Asset Management International INC. | 3.33M | 1.53% | $97.4M | trimmed -3.8% | 2025 Q4 |
| Morgan Stanley | 3.05M | 1.40% | $89.3M | added +28.4% | ≤2013 |
| Robeco Institutional Asset Management B.v. | 2.69M | 1.24% | $78.9M | added +9.4% | 2022 Q4 |
| Millennium Management | 1.35M | 0.62% | $39.7M | added +123.4% | 2022 Q1 |
| Great Lakes Advisors, LLC | 1.18M | 0.54% | $34.6M | added +5.7% | 2023 Q3 |
| Creative Planning | 1.02M | 0.47% | $29.8M | added +73.9% | 2024 Q4 |
| Two Sigma | 861.4k | 0.40% | $25.2M | added +5343.9% | 2025 Q2 |
| D. E. Shaw | 624.9k | 0.29% | $18.3M | added +51.1% | 2023 Q4 |
| BNP Paribas Financial Markets | 620.5k | 0.28% | $18.2M | added +3.6% | 2024 Q4 |
| American Century Companies INC | 579.3k | 0.27% | $17.0M | added +128.9% | 2020 Q1 |
| ABN Amro Investment Solutions | 568.3k | 0.26% | $16.6M | added +136.8% | 2023 Q1 |
| Goldman Sachs | 567.5k | 0.26% | $16.6M | added +61.9% | ≤2013 |
| Allspring Global Investments Holdings, LLC | 547.9k | 0.25% | $16.0M | trimmed -40.7% | 2022 Q4 |
| Marshall Wace | 514.1k | 0.24% | $15.1M | opened | 2026 Q1 |
| Calamos Advisors LLC | 429.4k | 0.20% | $12.6M | opened | 2026 Q1 |
| Jane Street | 426.9k | 0.20% | $12.5M | added +944.4% | 2025 Q4 |
| Cibc World Market INC. | 419.9k | 0.19% | $12.3M | trimmed -20.2% | ≤2013 |
| O'shaughnessy Asset Management, LLC | 376.2k | 0.17% | $11.0M | trimmed -7.5% | 2020 Q4 |
| Bank OF America CORP /DE/ | 345.4k | 0.16% | $10.1M | trimmed -35.2% | ≤2013 |
| State Street | 284.3k | 0.13% | $8.3M | added +5.9% | ≤2013 |
| BW Gestao de Investimentos Ltda. | 264.2k | 0.12% | $7.7M | opened | 2026 Q1 |
| Promethos Capital, LLC (focused) | 256.7k | 0.12% | $7.5M | unchanged | 2024 Q1 |
| Voloridge Investment Management | 253.9k | 0.12% | $7.4M | added +245.3% | 2025 Q4 |
| Point72 | 249.4k | 0.11% | $7.3M | added +161.6% | 2023 Q4 |
| Todd Asset Management LLC | 241.5k | 0.11% | $7.1M | added +8.4% | 2024 Q1 |
| Teachers Retirement System OF THE State OF Kentucky | 239.8k | 0.11% | $7.0M | added +8.4% | 2024 Q1 |
| Quantinno Capital Management LP | 235.2k | 0.11% | $6.9M | added +149.3% | 2024 Q1 |
| Euro Pacific Asset Management, LLC | 223.6k | 0.10% | $6.5M | added +80.6% | 2020 Q2 |
| Deutsche Bank AG\ | 221.1k | 0.10% | $6.5M | unchanged | ≤2013 |
| Jain Global LLC | 198.2k | 0.09% | $5.8M | opened | 2026 Q1 |
| Barrier Capital Management, LLC (focused) | 194.1k | 0.09% | $5.7M | opened | 2026 Q1 |
| Oversea-chinese Banking CORP LTD | 191.6k | 0.09% | $5.6M | added +40.9% | 2022 Q4 |
| Gradient Investments LLC | 188.8k | 0.09% | $5.5M | opened | 2026 Q1 |
| DGS Capital Management, LLC | 183.2k | 0.08% | $5.4M | added +3.9% | 2022 Q3 |
| LSV Asset Management | 180.2k | 0.08% | $5.3M | trimmed -14.8% | ≤2013 |
| UBS | 178.9k | 0.08% | $5.2M | trimmed -58.2% | ≤2013 |
| Dimensional Fund Advisors | 174.8k | 0.08% | $5.1M | added +12.6% | ≤2013 |
| Vanguard Group | 164.2k | 0.07% | $4.8M | added +47.5% | ≤2013 |
| Nordea Investment Management AB | 158.0k | 0.07% | $4.6M | trimmed -66.3% | ≤2013 |
| Ethic INC. | 156.5k | 0.07% | $4.6M | added +72.8% | 2020 Q3 |
| First Trust Advisors LP | 155.3k | 0.07% | $4.5M | added +243.6% | 2024 Q4 |
| Peak6 LLC | 142.3k | 0.07% | $4.2M | opened | 2026 Q1 |
| Group ONE Trading LLC | 132.1k | 0.06% | $3.9M | opened | 2026 Q1 |
| Boston Common Asset Management, LLC | 126.7k | 0.06% | $3.7M | trimmed -65% | 2016 Q4 |
| Vident Advisory, LLC | 126.5k | 0.06% | $3.7M | added +1.9% | 2022 Q2 |
| Sequoia Financial Advisors, LLC | 117.4k | 0.05% | $3.4M | added +33.7% | 2024 Q2 |
| Citadel Advisors | 115.6k | 0.05% | $3.4M | added +165.5% | 2025 Q1 |
| Barclays PLC | 108.0k | 0.05% | $3.2M | trimmed -44.2% | ≤2013 |
| Walleye Capital LLC | 105.5k | 0.05% | $3.1M | opened | 2026 Q1 |
Largest 50 of 237 shown; the full ranked, searchable register is at boothcheck.com/holders/SKM. 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.