SLB N.V.
US ˙ NYSE ˙ AN8068571086

SecuritySLB / SLB N.V.
InstitutionBoston Partners
Latest Disclosed Ownership13,427,431 shares
Latest Disclosed Value $ 689,200,525
Boston Partners reports 59.85% increase in ownership of SLB / SLB N.V.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 13,427,431 shares of SLB N.V. (US:SLB) valued at $690,035,679 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 8,400,146 shares of SLB N.V.. This represents a change in shares of 59.85% during the quarter. The current value of the position is $763,349,452 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F SLB COM STK 806857108 13,427,431 5,027,285 59.85 689,201 112.40 0.3085
2026-02-13 2025-12-31 13F SLB COM STK 806857108 8,400,146 -389,489 -4.43 324,482 7.43 0.3360
2025-11-13 2025-09-30 13F SCHLUMBERGER COM STK 806857108 8,789,635 114,451 1.32 302,047 3.04 0.3101
2025-08-12 2025-06-30 13F/A-1 SCHLUMBERGER COM STK 806857108 8,675,184 -11,154,197 -56.25 293,140 -64.43 0.3255
2025-08-07 2025-06-30 13F SCHLUMBERGER COM STK 806857108 8,659,084 -11,170,297 292,596 0.1343
2025-05-13 2025-03-31 13F SCHLUMBERGER COM STK 806857108 19,829,381 4,300,222 27.69 824,160 37.97 0.9967
2025-02-11 2024-12-31 13F SCHLUMBERGER COM STK 806857108 15,529,159 1,405,186 9.95 597,356 0.78 0.7266
2024-11-12 2024-09-30 13F SCHLUMBERGER COM STK 806857108 14,123,973 1,613,018 12.89 592,758 0.48 0.6996
2024-08-14 2024-06-30 13F SCHLUMBERGER COM STK 806857108 12,510,955 870,128 7.47 589,926 -7.23 0.7329
2024-05-28 2024-03-31 13F/A-1 SCHLUMBERGER COM STK 806857108 11,640,827 3,069,395 35.81 635,883 42.68 0.7574
2024-05-13 2024-03-31 13F SCHLUMBERGER COM STK 806857108 11,640,827 3,069,395 635,883 0.3147
2024-02-07 2023-12-31 13F SCHLUMBERGER COM STK 806857108 8,571,432 -4,797,421 -35.89 445,677 -42.73 0.5903
2023-11-08 2023-09-30 13F SCHLUMBERGER COM STK 806857108 13,368,853 -1,992,450 -12.97 778,181 2.55 1.0774
2023-08-10 2023-06-30 13F SCHLUMBERGER COM STK 806857108 15,361,303 -862,217 -5.31 758,856 -4.74 1.0214
2023-05-09 2023-03-31 13F SCHLUMBERGER COM STK 806857108 16,223,520 -1,145,335 -6.59 796,600 -14.31 1.0952
2023-02-08 2022-12-31 13F SCHLUMBERGER COM STK 806857108 17,368,855 -6,469,747 -27.14 929,651 7.68 1.2576
2022-11-09 2022-09-30 13F SCHLUMBERGER COM STK 806857108 23,838,602 135,486 0.57 863,324 1.82 1.2635
2022-08-10 2022-06-30 13F SCHLUMBERGER COM STK 806857108 23,703,116 387,027 1.66 847,896 -11.96 1.1850
2022-05-10 2022-03-31 13F SCHLUMBERGER COM STK 806857108 23,316,089 -873,741 -3.61 963,073 32.76 1.1667
2022-02-04 2021-12-31 13F SCHLUMBERGER COM STK 806857108 24,189,830 1,474,462 6.49 725,420 7.70 0.8738
2021-11-05 2021-09-30 13F SCHLUMBERGER COM STK 806857108 22,715,368 362,801 1.62 673,531 -5.84 0.8533
2021-08-12 2021-06-30 13F SCHLUMBERGER COM STK 806857108 22,352,567 -1,348,969 -5.69 715,279 11.03 0.9122
2021-05-10 2021-03-31 13F SCHLUMBERGER COM 806857108 23,701,536 4,901,533 26.07 644,195 56.97 0.8639
2021-02-10 2020-12-31 13F/A-1 SCHLUMBERGER COM 806857108 18,800,003 2,948,292 18.60 410,404 66.39 0.6383
2021-02-04 2020-12-31 13F SCHLUMBERGER COM 806857108 18,800,003 2,948,292 410,404 246,218.0062
2020-11-13 2020-09-30 13F/A-1 SCHLUMBERGER COM 806857108 15,851,711 15,826,616 63,066.81 246,653 53,288.10 0.4491
2020-11-09 2020-09-30 13F SCHLUMBERGER COM 806857108 25,095 0 462 339.1630
2020-08-12 2020-06-30 13F SCHLUMBERGER COM 806857108 25,095 -3,540 -12.36 462 19.69 0.0008
2020-05-13 2020-03-31 13F SCHLUMBERGER COM 806857108 28,635 -16,806 -36.98 386 -78.87 0.0008
2020-02-06 2019-12-31 13F/A-1 SCHLUMBERGER COM 806857108 45,441 -15,428 -25.35 1,827 -12.16 0.0024
2020-02-05 2019-12-31 13F SCHLUMBERGER COM 806857108 45,441 -15,428 1,827 1,027.1928
2019-11-20 2019-09-30 13F/A-1 SCHLUMBERGER COM 806857108 60,869 27,061 80.04 2,080 54.76 0.0028
2019-11-08 2019-09-30 13F SCHLUMBERGER COM 806857108 33,808 0 1,344 0.0018
2019-08-26 2019-06-30 13F/A-1 SCHLUMBERGER COM 806857108 33,808 -33,142 -49.50 1,344 -53.93 0.0018
2019-08-09 2019-06-30 13F SCHLUMBERGER COM 806857108 33,808 -33,142 1,344
2019-05-13 2019-03-31 13F/A-1 SCHLUMBERGER COM 806857108 66,950 -124,703 -65.07 2,917 -57.82 0.0039
2019-05-03 2019-03-31 13F SCHLUMBERGER COM 806857108 66,950 -124,703 2,917
2019-02-07 2018-12-31 13F SCHLUMBERGER COM 806857108 191,653 -21,981 -10.29 6,915 -46.87 0.0099
2018-11-14 2018-09-30 13F SCHLUMBERGER COM 806857108 213,634 64,571 43.32 13,015 30.25 0.0151
2018-08-03 2018-06-30 13F SCHLUMBERGER COM 806857108 149,063 -22,958 -13.35 9,992 -10.34 0.0120
2018-05-04 2018-03-31 13F SCHLUMBERGER COM 806857108 172,021 9,057 5.56 11,144 1.48 0.0134
2018-02-14 2017-12-31 13F/A-1 SCHLUMBERGER COM 806857108 162,964 78,808 93.65 10,982 87.06 0.0129
2018-02-01 2017-12-31 13F SCHLUMBERGER COM 806857108 162,964 78,808 10,982
2017-11-02 2017-09-30 13F SCHLUMBERGER COM 806857108 84,156 84,156 5,871 0.0073
2017-02-06 2016-12-31 13F SCHLUMBERGER COM 806857108 0 -73,210 -100.00 0 -100.00
2016-11-09 2016-09-30 13F SCHLUMBERGER COM 806857108 73,210 0 0.00 5,757 -0.55 0.0080
2016-08-05 2016-06-30 13F SCHLUMBERGER COM 806857108 73,210 8,479 13.10 5,789 21.26 0.0084
2016-05-12 2016-03-31 13F SCHLUMBERGER COM 806857108 64,731 3,285 5.35 4,774 11.39 0.0070
2016-02-08 2015-12-31 13F SCHLUMBERGER COM 806857108 61,446 12,391 25.26 4,286 26.69 0.0061
2015-11-10 2015-09-30 13F SCHLUMBERGER COM 806857108 49,055 49,055 0.00 3,383 0.0052
2015-05-05 2015-03-31 13F SCHLUMBERGER COM 806857108 0 -45,900 -100.00 0 -100.00
2015-02-09 2014-12-31 13F SCHLUMBERGER COM 806857108 45,900 -2,936,891 -98.46 3,920 -98.71 0.0059
2014-11-12 2014-09-30 13F SCHLUMBERGER COM 806857108 2,982,791 126,816 4.44 303,320 -9.96 0.4923
2014-08-08 2014-06-30 13F SCHLUMBERGER COM 806857108 2,855,975 397,006 16.15 336,863 40.51 0.5642
2014-05-07 2014-03-31 13F SCHLUMBERGER COM 806857108 2,458,969 -35,821 -1.44 239,750 6.65 0.4373
2014-02-06 2013-12-31 13F SCHLUMBERGER COM 806857108 2,494,790 185,483 8.03 224,805 10.17 0.4609
2013-11-12 2013-09-30 13F SCHLUMBERGER COM 806857108 2,309,307 173,523 8.12 204,050 33.32 0.4920
2013-08-01 2013-06-30 13F SCHLUMBERGER COM 806857108 2,135,784 2,135,784 153,050 0.4213
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.