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 SDRL for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 49%. 62 opened new positions; 26 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 4.95M | 7.61% | $225.2M | trimmed -0.8% | 2023 Q2 |
| Elliott Investment Management (focused) | 4.72M | 7.26% | $214.8M | added +3.5% | 2023 Q2 |
| Vanguard Group | 3.96M | 6.10% | $180.3M | added +4.1% | 2023 Q2 |
| UBS | 3.81M | 5.86% | $173.3M | added +27.9% | 2022 Q4 |
| Dimensional Fund Advisors | 3.55M | 5.47% | $161.7M | added +10.1% | 2024 Q3 |
| Adage Capital Partners GP, L.l.c. | 2.46M | 3.79% | $112.1M | trimmed -29.3% | 2022 Q4 |
| Goehring & Rozencwajg Associates, LLC (focused) | 2.45M | 3.77% | $111.5M | added +27.6% | 2023 Q2 |
| Patient Capital Management, LLC (focused) | 2.15M | 3.31% | $98.0M | added +4.8% | 2023 Q4 |
| BNP Paribas Financial Markets | 2.10M | 3.24% | $95.8M | added +25.6% | 2024 Q4 |
| State Street | 1.81M | 2.78% | $82.2M | added +5.7% | 2023 Q2 |
| Citadel Advisors | 1.68M | 2.58% | $76.4M | added +31.5% | 2023 Q1 |
| Geode Capital | 1.45M | 2.23% | $66.1M | added +3.1% | 2023 Q2 |
| American Century Companies INC | 1.43M | 2.20% | $65.1M | added +17.6% | 2023 Q3 |
| Condire Management, LP (focused) | 1.28M | 1.97% | $58.3M | unchanged | 2022 Q4 |
| Canyon Capital (focused) | 1.26M | 1.94% | $57.4M | trimmed -66.3% | 2022 Q4 |
| FMR (Fidelity) | 1.18M | 1.81% | $53.5M | added +13.7% | 2023 Q1 |
| AllianceBernstein | 1.01M | 1.55% | $45.9M | trimmed -1.9% | 2023 Q2 |
| Wellington Management | 991.5k | 1.52% | $45.1M | trimmed -14.8% | 2023 Q1 |
| Goldman Sachs | 956.5k | 1.47% | $43.5M | trimmed -16% | 2023 Q1 |
| Barclays PLC | 951.1k | 1.46% | $43.3M | added +35.1% | 2022 Q4 |
| Webs Creek Capital Management LP (focused) | 896.9k | 1.38% | $40.8M | added +2.5% | 2025 Q3 |
| Merewether Investment Management, LP | 867.3k | 1.33% | $39.5M | opened | 2026 Q1 |
| Sagefield Capital LP | 831.4k | 1.28% | $37.8M | trimmed -9.8% | 2023 Q3 |
| Qube Research & Technologies LTD | 822.9k | 1.27% | $37.4M | added +101.9% | 2024 Q3 |
| Hosking Partners LLP | 782.9k | 1.21% | $35.6M | added +9.6% | 2024 Q2 |
| Morgan Stanley | 718.8k | 1.11% | $32.7M | added +13.3% | 2022 Q4 |
| DNB Asset Management AS | 620.8k | 0.95% | $28.3M | trimmed -27.7% | 2024 Q3 |
| Packer & CO LTD (focused) | 613.1k | 0.94% | $27.9M | added +148.1% | 2024 Q4 |
| T. Rowe Price Investment Management, INC. | 547.5k | 0.84% | $24.9M | added +155.9% | 2025 Q3 |
| Northern Trust | 544.3k | 0.84% | $24.8M | added +4% | 2023 Q2 |
| Charles Schwab Investment Management | 513.1k | 0.79% | $23.4M | trimmed -1.2% | 2023 Q2 |
| ING Groep NV | 434.5k | 0.67% | $19.8M | unchanged | 2022 Q4 |
| EverSource Wealth Advisors, LLC | 433.5k | 0.67% | $19.7M | added +45678.5% | 2024 Q4 |
| Systematic Financial Management LP | 422.4k | 0.65% | $19.2M | trimmed -2.2% | 2023 Q4 |
| Bank OF America CORP /DE/ | 387.2k | 0.60% | $17.6M | trimmed -40.8% | 2022 Q4 |
| AQR Capital | 383.7k | 0.59% | $17.5M | added +1.3% | 2023 Q3 |
| Man Group | 383.0k | 0.59% | $17.4M | added +79.9% | 2025 Q4 |
| Bridgeway Capital Management, LLC | 374.1k | 0.58% | $17.0M | trimmed -9.6% | 2025 Q1 |
| Squarepoint Ops LLC | 352.6k | 0.54% | $16.0M | trimmed -1.7% | 2024 Q4 |
| Healthcare OF Ontario Pension Plan Trust Fund | 342.6k | 0.53% | $15.6M | added +3.6% | 2024 Q4 |
| Contrarius Group Holdings LTD (focused) | 319.0k | 0.49% | $14.5M | added +29.1% | 2025 Q2 |
| SIR Capital Management, L.p. | 301.8k | 0.46% | $13.7M | added +95.7% | 2023 Q1 |
| Empowered Funds, LLC | 265.7k | 0.41% | $12.1M | trimmed -7% | 2025 Q1 |
| Deutsche Bank AG\ | 256.4k | 0.39% | $11.7M | added +2.3% | 2022 Q4 |
| 683 Capital Management, LLC | 250.0k | 0.39% | $11.4M | added +25% | 2025 Q1 |
| Monaco Asset Management SAM | 219.7k | 0.34% | $10.0M | trimmed -15% | 2025 Q1 |
| Thompson Siegel & Walmsley LLC | 215.5k | 0.33% | $9.8M | trimmed -28.6% | 2023 Q3 |
| Balyasny Asset Management | 203.8k | 0.31% | $9.3M | opened | 2025 Q3 |
| Oceanic Investment Management LTD (focused) | 187.8k | 0.29% | $8.5M | added +79.2% | 2025 Q4 |
| BNY Mellon | 181.1k | 0.28% | $8.2M | trimmed -2.9% | 2023 Q2 |
Largest 50 of 237 shown; the full ranked, searchable register is at boothcheck.com/holders/SDRL. 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.