Who owns SDRL? 13F holders and whale ownership
SDRL is tracked across public portfolios in Whale Analyzer. This page answers who owns SDRL, which top funds are buying SDRL, aggregate disclosed value, and recent position changes based on public data. Paul Singer is the largest reported holder at $215M; the top five funds control 100.0% of reported ownership; institutions were net buying last quarter (3 increased, 0 reduced); the stock trades above the aggregate whale cost basis of $22.59. Top tracked holders include Paul Singer, David Einhorn, and Robert Robotti.
Continue to the live SDRL dashboardTop holders
| Investor | Reported value | Shares | Change |
|---|---|---|---|
| Paul Singer 13F portfolio Elliott Investment Management holdings | $214.7M | 4.7M | Increased |
| David Einhorn 13F portfolio Greenlight Capital holdings | $25.7M | 543.9K | Increased |
| Robert Robotti 13F portfolio Robotti & Co holdings | $6.0M | 131.9K | Increased |
Ownership concentration
Reported ownership of SDRL is highly concentrated across tracked institutions.
- Single largest holder: 87.1% of reported ownership
- Top 5 holders: 100.0%
- Top 10 holders: 100.0%
Whale activity this quarter
Across 3 tracked institutions, 3 increased. Net positioning is net buying.
- Paul Singer — Elliott Investment Management ($214.7M) (▲ 3.5% qoq shares) · avg cost $22.29
- David Einhorn — Greenlight Capital ($25.7M) (▲ 51.1% qoq shares)
- Robert Robotti — Robotti & Co ($6.0M) (▲ 597.3% qoq shares) · avg cost $33.31
Whale cost basis vs current price
The aggregate tracked cost basis is $22.59 versus a current price of $39.04, so SDRL trades above its cost basis (+72.8%). Average unrealized P&L across tracked holders: 101%.
Sector positioning — Other
SDRL sits within the Other sector alongside 670 other tracked names. Compare whale ownership across peers:
How to use this page
Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live SDRL dashboard for price charts and cross-investor scans, or read the SEC 13F guide.
Related stock holder pages
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- PSX whale holders — PHILLIPS 66
- SU whale holders — SUNCOR ENERGY INC NEW
- LUV whale holders — SOUTHWEST AIRLS CO
- HPE-PC whale holders — HEWLETT PACKARD ENTERPRISE C
- UNIT whale holders — UNITI GROUP LLC
- PINS whale holders — PINTEREST INC
- ETSY whale holders — ETSY INC
Learn more in Whale Analyzer Academy
Deepen your read on SDRL with these Whale Analyzer Academy guides:
Frequently asked questions
Who owns SDRL stock?
Whale Analyzer tracks 3 public institutional holders of SDRL with a combined reported value of $246.4M. See the holder table above for the largest tracked positions.
Which top funds are buying SDRL?
Tracked institutions were net buying last quarter — 3 increased. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.
How concentrated is SDRL ownership?
The top five tracked holders report 100.0% of aggregate ownership.
Is SDRL above or below the whale cost basis?
The aggregate tracked cost basis is $22.59 versus a current price of $39.04 (+72.8%).
What does 13F ownership mean for SDRL?
Use the interactive SDRL dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.