Halliburton Company
MX ˙ BMV ˙ US4062161017
SecurityMX:HAL / Halliburton Company
InstitutionNational Pension Service
Latest Disclosed Ownership1,907,778 shares
Latest Disclosed Value $ 74,384,264
National Pension Service reports 25.44% increase in ownership of HAL / Halliburton Company

On May 12, 2026 - National Pension Service filed a 13F-HR form disclosing ownership of 1,907,778 shares of Halliburton Company (MX:HAL) valued at $74,384,264 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,520,820 shares of Halliburton Company. This represents a change in shares of 25.44% 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 COM 406216101 1,907,778 386,958 25.44 74,384 73.07 0.0565
2026-02-10 2025-12-31 13F HALLIBURTON HALLIBURTON CO 406216101 1,520,820 46,685 3.17 42,978 18.52 0.0318
2025-11-04 2025-09-30 13F HALLIBURTON COM 406216101 1,474,135 59,754 4.22 36,264 25.80 0.0282
2025-08-08 2025-06-30 13F HALLIBURTON COM 406216101 1,414,381 5,672 0.40 28,825 -19.34 0.0249
2025-05-13 2025-03-31 13F HALLIBURTON COM 406216101 1,408,709 107,500 8.26 35,739 1.01 0.0344
2025-02-05 2024-12-31 13F HALLIBURTON COM 406216101 1,301,209 8,353 0.65 35,380 -5.80 0.0335
2024-10-30 2024-09-30 13F HALLIBURTONCO COM 406216101 1,292,856 24,350 1.92 37,557 -12.35 0.0362
2024-08-13 2024-06-30 13F HALLIBURTON COM 406216101 1,268,506 25,024 2.01 42,850 -12.58 0.0492
2024-05-14 2024-03-31 13F HALLIBURTON COM 406216101 1,243,482 85,294 7.36 49,018 17.08 0.0588
2024-02-07 2023-12-31 13F HALLIBURTON COM 406216101 1,158,188 0 0.00 41,868 -11.38 0.0583
2023-11-15 2023-09-30 13F HALLIBURTON COM 406216101 1,158,188 -72,064 -5.86 47,242 15.70 0.0756
2023-08-16 2023-06-30 13F HALLIBURTON COM 406216101 1,230,252 -576,462 -31.91 40,832 -27.24 0.0659
2023-05-12 2023-03-31 13F HALLIBURTON COM 406216101 1,806,714 678,937 60.20 56,117 26.45 0.1022
2023-02-24 2022-12-31 13F/A-1 HALLIBURTON COM 406216101 1,127,777 -30,492 -2.63 44,378 55.50 0.0873
2023-02-21 2022-12-31 13F HALLIBURTON COM 406216101 1,127,777 -30,492 44 0.0873
2023-02-24 2022-09-30 13F/A-1 HALLIBURTON COM 406216101 1,158,269 71,916 6.62 28,540 -16.23 0.0596
2022-11-18 2022-09-30 13F HALLIBURTON COM 406216101 1,158,269 71,916 28,540 0.0596
2022-08-17 2022-06-30 13F HALLIBURTON COM 406216101 1,086,353 25 0.00 34,068 -17.19 0.0702
2022-05-13 2022-03-31 13F HALLIBURTON COM 406216101 1,086,328 -133,958 -10.98 41,139 47.41 0.0751
2022-02-15 2021-12-31 13F HALLIBURTON COM 406216101 1,220,286 4,967 0.41 27,908 6.22 0.0487
2021-11-18 2021-09-30 13F HALLIBURTON COM 406216101 1,215,319 -82,517 -6.36 26,275 -12.43 0.0500
2021-08-17 2021-06-30 13F HALLIBURTON COM 406216101 1,297,836 8,466 0.66 30,006 8.44 0.0570
2021-05-14 2021-03-31 13F HALLIBURTON COM 406216101 1,289,370 31,584 2.51 27,670 16.40 0.0579
2021-02-19 2020-12-31 13F HALLIBURTON COM 406216101 1,257,786 -106,274 -7.79 23,772 36.58 0.0542
2020-11-13 2020-09-30 13F HALLIBURTON COM 406216101 1,364,060 0 0.00 17,405 -1.69 0.0457
2020-08-11 2020-06-30 13F HALLIBURTON 0 406216101 1,364,060 -20,493 -1.48 17,705 86.68 0.0506
2020-05-27 2020-03-31 13F HALLIBURTON 0 406216101 1,384,553 0 0.00 9,484 -72.01 0.0321
2020-02-21 2019-12-31 13F HALLIBURTON COM 406216101 1,384,553 331,553 31.49 33,880 70.69 0.0929
2019-11-15 2019-09-30 13F HALLIBURTON 0 406216101 1,053,000 49,716 4.96 19,849 -13.00 0.0628
2019-08-14 2019-06-30 13F HALLIBURTON COM 406216101 1,003,284 56,105 5.92 22,815 -17.79 0.0763
2019-05-15 2019-03-31 13F HALLIBURTON 0 406216101 947,179 34,967 3.83 27,752 -3.73 0.1068
2019-02-15 2018-12-31 13F HALLIBURTON 0 406216101 912,212 44,777 5.16 28,826 -18.01 0.1189
2018-11-15 2018-09-30 13F HALLIBURTON 0 406216101 867,435 -1,677 -0.19 35,157 -11.35 0.1431
2018-08-14 2018-06-30 13F HALLIBURTON 0 406216101 869,112 47,217 5.74 39,658 2.79 0.1795
2018-04-13 2018-03-31 13F HALLIBURTON COM 406216101 821,895 39,196 5.01 38,580 0.86 0.1912
2018-01-17 2017-12-31 13F HALLIBURTON 0 406216101 782,699 35,933 4.81 38,251 11.77 0.1910
2017-10-16 2017-09-30 13F HALLIBURTON COM 406216101 746,766 29,659 4.14 34,224 12.50 0.1883
2017-07-13 2017-06-30 13F HALLIBURTON COM 406216101 717,107 59,309 9.02 30,420 -5.66 0.1812
2017-04-11 2017-03-31 13F HALLIBURTON COM 406216101 657,798 12,935 2.01 32,245 -7.56 0.2159
2017-01-18 2016-12-31 13F HALLIBURTON 0 406216101 644,863 37,432 6.16 34,881 27.95 0.2386
2016-10-14 2016-09-30 13F HALLIBURTON COM 406216101 607,431 47,976 8.58 27,262 7.59 0.2185
2016-08-11 2016-06-30 13F HALLIBURTON 0 406216101 559,455 59,182 11.83 25,338 41.79 0.2249
2016-05-16 2016-03-31 13F HALLIBURTON 0 406216101 500,273 20,118 4.19 17,870 9.34 0.1790
2016-02-12 2015-12-31 13F HALLIBURTON COM 406216101 480,155 29,193 6.47 16,344 2.52 0.1717
2015-10-15 2015-09-30 13F HALLIBURTON 0 406216101 450,962 77,170 20.65 15,942 -0.98 0.2016
2015-07-15 2015-06-30 13F HALLIBURTON 0 406216101 373,792 52,355 16.29 16,099 14.14 0.2088
2015-04-15 2015-03-31 13F HALLIBURTON 0 406216101 321,437 44,091 15.90 14,105 29.31 0.2038
2015-01-13 2014-12-31 13F HALLIBURTON COM 406216101 277,346 -16,317 -5.56 10,908 -42.42 0.1841
2014-11-07 2014-09-30 13F HALLIBURTON COM 406216101 293,663 293,663 18,944 0.3008
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.