Halliburton Company
MX ˙ BMV ˙ US4062161017
SecurityMX:HAL / Halliburton Company
InstitutionRhumbline Advisers
Latest Disclosed Ownership1,540,521 shares
Latest Disclosed Value $ 60,064,798
Rhumbline Advisers reports 3.61% decrease in ownership of HAL / Halliburton Company

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 1,540,521 shares of Halliburton Company (MX:HAL) valued at $60,064,798 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,598,249 shares of Halliburton Company. This represents a change in shares of -3.61% during the quarter.

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)
2026-05-12 2026-03-31 13F HALLIBURTON CO COM COM 406216101 1,540,521 -57,728 -3.61 60,065 32.98 0.0514
2026-02-13 2025-12-31 13F HALLIBURTON CO COM COM 406216101 1,598,249 -93,642 -5.53 45,166 8.52 0.0365
2025-11-06 2025-09-30 13F HALLIBURTON CO COM COM 406216101 1,691,891 -14,014 -0.82 41,620 19.71 0.0334
2025-08-12 2025-06-30 13F HALLIBURTON CO COM COM 406216101 1,705,905 -18,207 -1.06 34,766 -20.52 0.0298
2025-05-29 2025-03-31 13F/A-1 HALLIBURTON CO COM COM 406216101 1,724,112 165,149 10.59 43,741 3.19 0.0409
2025-04-08 2025-03-31 13F HALLIBURTON CO COM COM 406216101 1,724,112 165,149 43,741 0.0409
2025-05-29 2024-12-31 13F/A-1 HALLIBURTON CO COM COM 406216101 1,558,963 -7,552 -0.48 42,388 -6.85 0.0379
2025-01-30 2024-12-31 13F HALLIBURTON CO COM COM 406216101 1,558,963 -7,552 42,388 0.0379
2024-11-12 2024-09-30 13F HALLIBURTON CO COM COM 406216101 1,566,515 -108,874 -6.50 45,507 -19.59 0.0411
2024-08-01 2024-06-30 13F HALLIBURTON CO COM COM 406216101 1,675,389 -77,484 -4.42 56,595 -18.10 0.0532
2024-05-09 2024-03-31 13F HALLIBURTON CO COM COM 406216101 1,752,873 50,408 2.96 69,098 12.28 0.0664
2024-02-08 2023-12-31 13F HALLIBURTON CO COM COM 406216101 1,702,465 -11,746 -0.69 61,544 -11.35 0.0645
2023-11-09 2023-09-30 13F HALLIBURTON CO COM COM 406216101 1,714,211 -13,287 -0.77 69,425 21.82 0.0806
2023-08-08 2023-06-30 13F HALLIBURTON CO COM COM 406216101 1,727,498 -18,961 -1.09 56,990 103,518.18 0.0638
2023-05-11 2023-03-31 13F HALLIBURTON CO COM COM 406216101 1,746,459 38,522 2.26 55 -99.92 0.0682
2023-02-14 2022-12-31 13F HALLIBURTON CO COM COM 406216101 1,707,937 80,138 4.92 67,207 67.70 0.0903
2022-11-10 2022-09-30 13F HALLIBURTON CO COM COM 406216101 1,627,799 72,255 4.64 40,076 -17.85 0.0597
2022-08-11 2022-06-30 13F HALLIBURTON CO COM COM 406216101 1,555,544 190,231 13.93 48,782 -5.65 0.0712
2022-05-12 2022-03-31 13F HALLIBURTON CO COM COM 406216101 1,365,313 29,975 2.24 51,704 69.30 0.0666
2022-02-10 2021-12-31 13F HALLIBURTON CO COM COM 406216101 1,335,338 14,592 1.10 30,539 6.95 0.0374
2021-11-12 2021-09-30 13F HALLIBURTON CO COM COM 406216101 1,320,746 -47,685 -3.48 28,555 -9.74 0.0386
2021-08-05 2021-06-30 13F HALLIBURTON CO COM COM 406216101 1,368,431 -51,594 -3.63 31,638 3.82 0.0415
2021-05-06 2021-03-31 13F HALLIBURTON CO COM COM 406216101 1,420,025 -79,823 -5.32 30,474 7.50 0.0414
2021-02-10 2020-12-31 13F HALLIBURTON CO COM COM 406216101 1,499,848 -10,231 -0.68 28,347 55.79 0.0391
2020-11-12 2020-09-30 13F HALLIBURTON CO COM COM 406216101 1,510,079 -1,934 -0.13 18,196 -7.29 0.0285
2020-08-13 2020-06-30 13F HALLIBURTON CO COM COM 406216101 1,512,013 36,217 2.45 19,626 94.14 0.0328
2020-05-06 2020-03-31 13F HALLIBURTON CO COM COM 406216101 1,475,796 44,951 3.14 10,109 -71.13 0.0212
2020-02-05 2019-12-31 13F HALLIBURTON CO COM COM 406216101 1,430,845 70,357 5.17 35,013 36.53 0.0586
2019-10-23 2019-09-30 13F HALLIBURTON CO COM COM 406216101 1,360,488 -8,978 -0.66 25,645 -17.65 0.0469
2019-08-14 2019-06-30 13F HALLIBURTON CO COM COM 406216101 1,369,466 -242,868 -15.06 31,142 -34.08 0.0585
2019-05-01 2019-03-31 13F HALLIBURTON CO COM COM 406216101 1,612,334 70,979 4.60 47,241 15.31 0.0915
2019-01-31 2018-12-31 13F HALLIBURTON CO COM COM 406216101 1,541,355 -1,170 -0.08 40,969 -34.47 0.0891
2018-11-07 2018-09-30 13F HALLIBURTON CO COM COM 406216101 1,542,525 -10,715 -0.69 62,519 -10.67 0.1207
2018-08-06 2018-06-30 13F HALLIBURTON CO COM COM 406216101 1,553,240 6,846 0.44 69,989 -3.58 0.1412
2018-05-02 2018-03-31 13F HALLIBURTON CO COM COM 406216101 1,546,394 -12,878 -0.83 72,588 -4.74 0.1516
2018-02-09 2017-12-31 13F HALLIBURTON CO COM COM 406216101 1,559,272 36,213 2.38 76,202 8.70 0.1548
2017-11-06 2017-09-30 13F HALLIBURTON CO COM COM 406216101 1,523,059 13,050 0.86 70,106 8.70 0.1524
2017-08-02 2017-06-30 13F HALLIBURTON CO COM COM 406216101 1,510,009 -54,088 -3.46 64,492 -16.21 0.1472
2017-05-02 2017-03-31 13F HALLIBURTON CO COM COM 406216101 1,564,097 50,918 3.36 76,969 -5.96 0.1798
2017-01-27 2016-12-31 13F HALLIBURTON CO COM COM 406216101 1,513,179 80,889 5.65 81,848 27.33 0.2074
2016-11-08 2016-09-30 13F HALLIBURTON CO COM COM 406216101 1,432,290 58,831 4.28 64,281 3.34 0.1771
2016-08-11 2016-06-30 13F HALLIBURTON CO COM COM 406216101 1,373,459 87,802 6.83 62,204 35.45 0.1843
2016-05-02 2016-03-31 13F HALLIBURTON CO US COM 406216101 1,285,657 58,297 4.75 45,924 9.92 0.1425
2016-02-03 2015-12-31 13F HALLIBURTON CO US COM 406216101 1,227,360 36,410 3.06 41,779 -0.76 0.1344
2015-11-04 2015-09-30 13F HALLIBURTON CO US COM 406216101 1,190,950 19,252 1.64 42,100 -16.58 0.1432
2015-08-04 2015-06-30 13F HALLIBURTON CO US COM 406216101 1,171,698 -223,442 -16.02 50,465 -17.57 0.1608
2015-05-12 2015-03-31 13F HALLIBURTON CO US COM 406216101 1,395,140 -70,824 -4.83 61,219 6.18 0.1766
2015-02-06 2014-12-31 13F HALLIBURTON CO US COM 406216101 1,465,964 -24,742 -1.66 57,656 -40.04 0.1675
2014-11-12 2014-09-30 13F HALLIBURTON CO US COM 406216101 1,490,706 -29,241 -1.92 96,165 -10.90 0.2889
2014-08-06 2014-06-30 13F HALLIBURTON CO US COM 406216101 1,519,947 -50,393 -3.21 107,931 16.71 0.3167
2014-05-06 2014-03-31 13F HALLIBURTON CO US COM 406216101 1,570,340 -52,431 -3.23 92,477 12.29 0.2743
2014-02-03 2013-12-31 13F HALLIBURTON CO US COM 406216101 1,622,771 -119,284 -6.85 82,356 -1.82 0.2429
2013-11-05 2013-09-30 13F HALLIBURTON CO US COM 406216101 1,742,055 -114,062 -6.15 83,880 8.32 0.2599
2013-08-07 2013-06-30 13F HALLIBURTON CO US COM 406216101 1,856,117 1,856,117 77,437 0.2488
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.