Who owns SDRL (SDRL)
Which tracked institutional funds hold SDRL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SDRL company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on SDRL is one-sided between 2025-Q4 and 2026-Q1: 111 added or opened and 36 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SDRL’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes SDRL more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in SDRL divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 244 tracked filers holding SDRL, 147 increased or opened the position and 93 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SDRL between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 28
- VANGUARD CAPITAL MANAGEMENT LLC$122M
- Merewether Investment Management, LP$39M
- VANGUARD PORTFOLIO MANAGEMENT LLC$35M
- VANGUARD FIDUCIARY TRUST CO$19M
- BALYASNY ASSET MANAGEMENT L.P.$9M
- FRANKLIN RESOURCES INC$7M
Full exits 16
- VANGUARD GROUP INC$115M
- Thomist Capital Management, LP$63M
- INVESCO SENIOR SECURED MANAGEMENT INC /ADV$8M
- Lloyd Harbor Capital Management, LLC$8M
- STOREBRAND ASSET MANAGEMENT AS$7M
- AMERIPRISE FINANCIAL INC$6M
Largest adds
- UBS Group AG$70M
- Elliott Investment Management L.P.$57M
- BlackRock, Inc.$53M
- DIMENSIONAL FUND ADVISORS LP$50M
- Goehring & Rozencwajg Associates, LLC$45M
- BNP PARIBAS FINANCIAL MARKETS$38M
Largest trims
- CANYON CAPITAL ADVISORS LLC$72M
- Walleye Capital LLC$27M
- SummitTX Capital, L.P.$10M
- Tejara Capital Ltd$10M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$8M
- MILLENNIUM MANAGEMENT LLC$5M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 4,948,272 | $225M | 7.0% | 2026-Q1 |
| Elliott Investment Management L.P. added | 4,719,085 | $215M | 6.7% | 2026-Q1 |
| UBS Group AG added | 3,805,949 | $173M | 5.4% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 3,553,281 | $162M | 5.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,690,469 | $122M | 3.8% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 2,463,436 | $112M | 3.5% | 2026-Q1 |
| Goehring & Rozencwajg Associates, LLC added | 2,449,565 | $111M | 3.5% | 2026-Q1 |
| Patient Capital Management, LLC added | 2,152,685 | $98M | 3.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 2,104,754 | $96M | 3.0% | 2026-Q1 |
| STATE STREET CORP added | 1,805,232 | $82M | 2.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,679,246 | $76M | 2.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,452,245 | $66M | 2.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,430,743 | $65M | 2.0% | 2026-Q1 |
| Condire Management, LP | 1,279,968 | $58M | 1.8% | 2026-Q1 |
| CANYON CAPITAL ADVISORS LLC trimmed | 1,261,779 | $57M | 1.8% | 2026-Q1 |
| FMR LLC trimmed | 1,021,598 | $46M | 1.4% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 991,549 | $45M | 1.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 956,495 | $44M | 1.4% | 2026-Q1 |
| BARCLAYS PLC added | 951,105 | $43M | 1.3% | 2026-Q1 |
| Webs Creek Capital Management LP added | 896,939 | $41M | 1.3% | 2026-Q1 |
| Merewether Investment Management, LP new | 867,338 | $39M | 1.2% | 2026-Q1 |
| Sagefield Capital LP trimmed | 831,355 | $38M | 1.2% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 822,881 | $37M | 1.2% | 2026-Q1 |
| Hosking Partners LLP added | 782,944 | $36M | 1.1% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 776,988 | $35M | 1.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 1,007,819 | $35M | 1.1% | 2026-Q1 |
| MORGAN STANLEY added | 718,762 | $33M | 1.0% | 2026-Q1 |
| DNB Asset Management AS trimmed | 620,783 | $28M | 0.9% | 2026-Q1 |
| Packer & Co Ltd added | 613,080 | $28M | 0.9% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 547,475 | $25M | 0.8% | 2026-Q1 |
| NORTHERN TRUST CORP added | 544,278 | $25M | 0.8% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 513,099 | $23M | 0.7% | 2026-Q1 |
| ING GROEP NV | 434,513 | $20M | 0.6% | 2026-Q1 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 422,369 | $19M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 411,821 | $19M | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 387,160 | $18M | 0.5% | 2026-Q1 |
| Man Group plc added | 382,953 | $17M | 0.5% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 374,079 | $17M | 0.5% | 2026-Q1 |
| EverSource Wealth Advisors, LLC added | 433,522 | $17M | 0.5% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 370,147 | $17M | 0.5% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 352,600 | $16M | 0.5% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 342,645 | $16M | 0.5% | 2026-Q1 |
| Contrarius Group Holdings Ltd added | 318,958 | $15M | 0.5% | 2026-Q1 |
| SIR Capital Management, L.P. added | 301,799 | $14M | 0.4% | 2026-Q1 |
| Empowered Funds, LLC trimmed | 265,749 | $12M | 0.4% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 256,423 | $12M | 0.4% | 2026-Q1 |
| 683 Capital Management, LLC added | 250,000 | $11M | 0.4% | 2026-Q1 |
| Monaco Asset Management SAM trimmed | 219,671 | $10M | 0.3% | 2026-Q1 |
| THOMPSON SIEGEL & WALMSLEY LLC trimmed | 215,484 | $10M | 0.3% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 203,778 | $9M | 0.3% | 2026-Q1 |
| Oceanic Investment Management LTD added | 187,850 | $9M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 181,147 | $8M | 0.3% | 2026-Q1 |
| Nuveen, LLC added | 170,178 | $8M | 0.2% | 2026-Q1 |
| CITIGROUP INC added | 162,855 | $7M | 0.2% | 2026-Q1 |
| Foresight Global Investors, Inc. trimmed | 161,105 | $7M | 0.2% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 162,424 | $7M | 0.2% | 2026-Q1 |
| Edgestream Partners, L.P. added | 158,279 | $7M | 0.2% | 2026-Q1 |
| Jump Financial, LLC added | 145,555 | $7M | 0.2% | 2026-Q1 |
| Creative Planning added | 141,066 | $6M | 0.2% | 2026-Q1 |
| Azarias Capital Management, L.P. new | 136,645 | $6M | 0.2% | 2026-Q1 |
| ROBOTTI ROBERT added | 131,860 | $6M | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 130,146 | $6M | 0.2% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC added | 128,085 | $6M | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP added | 123,465 | $6M | 0.2% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 119,860 | $5M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 117,200 | $5M | 0.2% | 2026-Q1 |
| FIL Ltd added | 113,262 | $5M | 0.2% | 2026-Q1 |
| Hartree Partners, LP added | 107,300 | $5M | 0.2% | 2026-Q1 |
| Walleye Capital LLC trimmed | 104,524 | $5M | 0.1% | 2026-Q1 |
| SG Americas Securities, LLC added | 101,474 | $5M | 0.1% | 2026-Q1 |
| LONESTAR CAPITAL MANAGEMENT LLC trimmed | 100,000 | $5M | 0.1% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 99,315 | $5M | 0.1% | 2026-Q1 |
| Assenagon Asset Management S.A. | 98,796 | $4M | 0.1% | 2026-Q1 |
| Pinpoint Asset Management (Singapore) Pte. Ltd. added | 97,797 | $4M | 0.1% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 93,476 | $4M | 0.1% | 2026-Q1 |
| Glenorchy Capital Ltd new | 81,477 | $4M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 81,322 | $4M | 0.1% | 2026-Q1 |
| Atom Investors LP added | 74,896 | $3M | 0.1% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 74,735 | $3M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 3,322,621 | $115M | 3.6% | 2025-Q4 stale |
| SCHF (GPE), LLC | 2,290,735 | $69M | 2.2% | 2025-Q3 stale |
| Thomist Capital Management, LP added | 1,835,718 | $63M | 2.0% | 2025-Q4 stale |
| DME Capital Management, LP | 1,588,828 | $48M | 1.5% | 2025-Q3 stale |
| NORGES BANK trimmed | 827,794 | $33M | 1.0% | 2025-Q3 stale |
| Third Point LLC | 1,025,000 | $26M | 0.8% | 2025-Q1 stale |
| Yaupon Capital Management LP trimmed | 517,848 | $16M | 0.5% | 2025-Q3 stale |
| Sourcerock Group LLC trimmed | 390,894 | $12M | 0.4% | 2025-Q3 stale |
| Empyrean Capital Partners, LP new | 374,420 | $11M | 0.4% | 2025-Q3 stale |
| Bridgewater Associates, LP trimmed | 340,862 | $9M | 0.3% | 2025-Q2 stale |
| INVESCO SENIOR SECURED MANAGEMENT INC /ADV | 221,942 | $8M | 0.2% | 2025-Q4 stale |
| Lloyd Harbor Capital Management, LLC trimmed | 220,000 | $8M | 0.2% | 2025-Q4 stale |
| STOREBRAND ASSET MANAGEMENT AS new | 198,537 | $7M | 0.2% | 2025-Q4 stale |
| AMERIPRISE FINANCIAL INC trimmed | 162,525 | $6M | 0.2% | 2025-Q4 stale |
| Dockside LLC new | 160,754 | $6M | 0.2% | 2025-Q4 stale |
| Aventail Capital Group, LP trimmed | 200,845 | $5M | 0.2% | 2025-Q1 stale |
| Brandywine Global Investment Management, LLC new | 142,989 | $5M | 0.1% | 2025-Q4 stale |
| Nokomis Capital, L.L.C. trimmed | 124,431 | $4M | 0.1% | 2025-Q4 stale |
| Corigliano Investment Advisers, LLC added | 115,835 | $4M | 0.1% | 2025-Q4 stale |
| Parallax Volatility Advisers, L.P. added | 117,101 | $4M | 0.1% | 2025-Q3 stale |
| CANADA PENSION PLAN INVESTMENT BOARD added | 140,346 | $4M | 0.1% | 2025-Q1 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.