Schlumberger Limited (SLB)

The full register, from 13F filings

The Register tab above is hand research: a dozen holders, each traced to the filing it came from. This asks the same question of the whole market for the quarter ended 31-mar-2026, where 1,657 managers reported a position. Broad where the research is deep, and shallow in the ways a 13F always is.

Built from 13F filings, which report US listed, long, US custodied positions only. A register from this source is a floor rather than a level: a holder's true position can be far larger, as BlackRock's ASML stake shows at 1.28m shares in a 13F against 26.3m in its 13G/A. Holdings held through derivatives, outside US custody, or below a manager's reporting obligation do not appear. Where a holder is marked as a family, its total sums several separate filing entities and describes something no single filing describes; the constituent entities and their share counts are listed so the total can be checked. That roll-up can legitimately exceed the family's own Schedule 13G, because a 13G is filed by one legal entity: Vanguard reports Alphabet through ten advisory entities, and The Vanguard Group Inc itself reported zero after its January 2026 disaggregation.

What a reader needs to know to read these numbers

• Rebrand. The registrant's legal name on its own SEC cover pages is now 'SLB N.V. (SLB Limited)' (Curacao-incorporated, IRS EIN 52-0684746, CIK 0000087347), formerly 'Schlumberger Limited' / 'Schlumberger N.V.'. SEC's own company-facts feed still lists the entity as 'SLB LIMITED/NV'. The company completed a broad rebrand from the Schlumberger name to the SLB brand and ticker (previously SLB was already the ticker, but the legal entity name itself has since been changed to SLB N.V./SLB Limited). This file names the company 'Schlumberger Limited (SLB)' per the task's naming requirement so it remains matchable by the project's slug-based cross-check; all filings, 13F rows and the register in this file refer to the same CIK 0000087347 and CUSIP 806857108, which 13F filers label 'SLB LIMITED' or 'SLB LTD'.
• ChampionX is excluded and is now a wholly owned subsidiary, not a minority holding. SLB acquired all outstanding shares of ChampionX Corporation on 16 July 2025 in an all-stock transaction (191 million ChampionX shares exchanged at a ratio of 0.735 SLB shares per ChampionX share, 141 million SLB shares issued, closing SLB price $35.07, total equity consideration $4,936 million per the FY2025 10-K Note 6 Acquisitions). ChampionX is consolidated into SLB's financial statements from that date and does not appear in this file's holdings per the brief's exclusion of wholly owned operating subsidiaries. Chain of custody: ChampionX traces back to Ecolab's 2020 split-off of its Upstream Energy business (Apergy Corporation, later renamed ChampionX after merging with Champion Technologies); per this project's ecolab.json, Ecolab fully divested its retained ChampionX shares via a registered exchange offer shortly after the 2020 split-off and holds no ChampionX position today. SLB's July 2025 acquisition of ChampionX is therefore unconnected to any residual Ecolab stake; Ecolab exited years before SLB entered.
• OneSubsea is a controlled, consolidated joint venture and is excluded, not a minority stake. SLB owns 70% of the SLB OneSubsea joint venture; Aker Solutions ASA owns 20% and Subsea7 S.A. owns 10% (FY2025 10-K). Because SLB holds a controlling financial interest, OneSubsea is consolidated (reported as part of the Production Systems segment, branded 'SLB OneSubsea') rather than held as a minority equity-method investment, so it is excluded per the brief's rule on controlled joint ventures. The Aker Solutions subsea business itself was acquired by SLB in October 2023 and is not a current SLB equity stake in Aker.
• SLB Capturi (SLB and Aker Carbon Capture ASA joint venture, closed Q2 2024, carbon capture technology) is described in the FY2025 10-K but no minority ownership percentage or standalone equity-method balance is disclosed; SLB's noncontrolling-interests balance ($1,182 million at 31 Dec 2025, $1,220 million at 31 Dec 2024) implies SLB consolidates this JV (recording outside minority owners' share as noncontrolling interest) rather than holding it as an unconsolidated minority equity position. No holding row is recorded for it.
• No individually named minority equity holding was found in either filing. Searched the Q2 2026 10-Q and FY2025 10-K for 'equity method', 'unconsolidated', 'joint venture', 'OneSubsea', 'Aker', 'Aker Solutions', 'ADC', 'Arabian Drilling', 'ChampionX', 'Liberty Energy', 'NOV', 'National Oilwell', 'Subsea Integration Alliance', 'equity in earnings', 'minority interest', 'noncontrolling interest', 'Saudi Aramco', 'Investments in Affiliated Companies', 'significant influence'. The only quantified equity-investment figures found are a single combined balance sheet line, 'Investments in Affiliated Companies': $1,691 million at 30 June 2026 (Q2 2026 10-Q) and $1,783 million at 31 December 2025 (FY2025 10-K). This line covers all of SLB's equity-method investees (companies where SLB has significant influence but not control) and cost-method / fair-value investees (companies where SLB has neither control nor significant influence) combined, with no investee individually named or sized in either filing. Per the brief's rule against assigning a combined balance to one investee, no holding row is recorded for it; the figure is reported here and in unknowns instead. Related income-statement figures: 'Earnings of equity method investments' were $48 million (Q2 2026), $18 million (Q1 2026) and $196 million (full year 2025); a $69 million equity-method-investment impairment was recorded in Q2 2025 for an unnamed investee.
• Liberty Energy, historical, fully exited. SLB contributed its US/Canada onshore hydraulic fracturing (pressure pumping, pumpdown perforating, Permian frac sand) business to Liberty Energy Inc. in exchange for an equity interest, then sold all of its remaining approximately 9 million Liberty shares during Q1 2023 (FY2025 10-K, 'Gain on sale of Liberty shares $(36) million' recorded in Q1 2023). SLB holds no Liberty Energy position today; no holding row is recorded.
• Percentages in the register are computed against 1,484,143,231 common shares outstanding as of 30 June 2026 (Q2 2026 10-Q cover page, 'Outstanding at June 30, 2026'), except the two proxy-sourced insider rows, which use the proxy's own denominator of 1,502,561,554 shares as of 31 January 2026.
• Market capitalisation of $79.22 billion and the $53.38 share price are stockanalysis.com's intraday figures as of 17 August 2026, 12:34pm EDT. Cross-check: 1,484,143,231 shares x $53.38 implies approximately $79.24 billion, consistent with the reported market cap.
• No Schedule 13D or 13G/A has been filed on SLB stock since 14 November 2025 (T. Rowe Price Associates, CIK 0000080255, accession 0000080255-25-000790), per the EDGAR filing index for CIK 0000087347; Vanguard's most recent 13G/A was filed 30 October 2025 (accession 0000102909-25-000205). The register instead relies on each institution's Q2 2026 Form 13F-HR, which is more current (30 June 2026) than these 13G/A filings and is the basis used throughout this file; the proxy's own >5%-holder figures (Vanguard 12.3%, BlackRock 7.2%, State Street 5.6%, all as of dates in late 2025/early 2024) are cited in the affected rows' method_note for reconciliation but not used as the primary figure.
• Self-gate check: summing the 12 non-aggregate, non-insider register rows (Vanguard, BlackRock, State Street, Capital Group, Charles Schwab Investment Management, Morgan Stanley, Geode, FMR/Fidelity, Norges Bank, Northern Trust, Wellington, Franklin Resources) gives 644,972,218 shares against 1,484,143,231 shares outstanding, or 43.46%, within the expected 25 to 45 percent range.