Halliburton Company
MX ˙ BMV ˙ US4062161017
SecurityMX:HAL / Halliburton Company
InstitutionGWM Advisors LLC
Latest Disclosed Ownership63,685 shares
Latest Disclosed Value $ 2,336,204
GWM Advisors LLC reports 34.33% decrease in ownership of HAL / Halliburton Company

On May 15, 2026 - GWM Advisors LLC filed a 13F-HR form disclosing ownership of 63,685 shares of Halliburton Company (MX:HAL) valued at $2,336,204 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 96,970 shares of Halliburton Company. This represents a change in shares of -34.33% 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)
2026-05-15 2026-03-31 13F HALLIBURTON COM 406216101 63,685 -33,285 -34.33 2,336 -14.74 0.1082
2026-02-18 2025-12-31 13F HALLIBURTON COM 406216101 96,970 4,220 4.55 2,740 20.12 0.0099
2025-11-17 2025-09-30 13F HALLIBURTON Common Stock 406216101 92,750 -19,405 -17.30 2,282 -0.18 0.0104
2025-08-14 2025-06-30 13F HALLIBURTON COM 406216101 112,155 27,255 32.10 2,286 6.13 0.0118
2025-05-15 2025-03-31 13F HALLIBURTON Common Stock 406216101 84,900 15,070 21.58 2,154 13.44 0.0128
2025-02-13 2024-12-31 13F HALLIBURTON COM 406216101 69,830 -45 -0.06 1,899 -6.46 0.0114
2024-11-14 2024-09-30 13F HALLIBURTON COM 406216101 69,875 -3,850 -5.22 2,030 -18.51 0.0132
2024-08-16 2024-06-30 13F HALLIBURTON COM 406216101 73,725 13,241 21.89 2,490 4.45 0.0181
2024-05-14 2024-03-31 13F HALLIBURTON COM 406216101 60,484 1,128 1.90 2,384 11.92 0.0208
2024-02-13 2023-12-31 13F HALLIBURTON COM 406216101 59,356 -15,136 -20.32 2,131 -29.38 0.0202
2023-11-14 2023-09-30 13F HALLIBURTON COM 406216101 74,492 3,094 4.33 3,017 28.07 0.0332
2023-08-14 2023-06-30 13F HALLIBURTON COM 406216101 71,398 1,855 2.67 2,355 7.05 0.0266
2023-05-12 2023-03-31 13F HALLIBURTON COM 406216101 69,543 -4,036 -5.49 2,200 63.33 0.0275
2023-02-14 2022-12-31 13F HALLIBURTON COM 406216101 73,579 24,055 48.57 1,347 10.50 0.0364
2022-11-14 2022-09-30 13F HALLIBURTON COM 406216101 49,524 -8,916 -15.26 1,219 -33.50 0.0200
2022-08-09 2022-06-30 13F HALLIBURTON Common Stock 406216101 58,440 29,548 102.27 1,833 67.55 0.0304
2022-05-13 2022-03-31 13F HALLIBURTON Common Stock 406216101 28,892 -21,520 -42.69 1,094 -5.12 0.0176
2022-02-17 2021-12-31 13F HALLIBURTON Common Stock 406216101 50,412 -339 -0.67 1,153 5.10 0.0174
2021-10-29 2021-09-30 13F HALLIBURTON Common Stock 406216101 50,751 -155 -0.30 1,097 -6.80 0.0271
2021-07-22 2021-06-30 13F HALLIBURTON Common Stock 406216101 50,906 -233 -0.46 1,177 7.29 0.0313
2021-04-26 2021-03-31 13F HALLIBURTON Common Stock 406216101 51,139 16,737 48.65 1,097 68.77 0.0327
2021-01-27 2020-12-31 13F HALLIBURTON Common Stock 406216101 34,402 -3,699 -9.71 650 41.61 0.0213
2020-11-03 2020-09-30 13F HALLIBURTON Common Stock 406216101 38,101 2,283 6.37 459 -1.29 0.0160
2020-07-29 2020-06-30 13F HALLIBURTON Common Stock 406216101 35,818 -4,089 -10.25 465 70.33 0.0182
2020-05-04 2020-03-31 13F HALLIBURTON COM 406216101 39,907 18,499 86.41 273 -47.80 0.0132
2020-01-31 2019-12-31 13F HALLIBURTON Common Stock 406216101 21,408 -4,028 -15.84 523 9.19 0.0208
2019-11-06 2019-09-30 13F HALLIBURTON COM 406216101 25,436 1,441 6.01 479 -12.27 0.0213
2019-08-05 2019-06-30 13F HALLIBURTON COM 406216101 23,995 6,117 34.22 546 4.20 0.0334
2019-05-14 2019-03-31 13F/A-1 HALLIBURTON COM 406216101 17,878 1,163 6.96 524 18.02 0.0338
2019-05-09 2019-03-31 13F HALLIBURTON COM 406216101 10,124 -6,591 0
2019-01-28 2018-12-31 13F HALLIBURTON COM 406216101 16,715 -599 -3.46 444 -36.75 0.0286
2018-10-29 2018-09-30 13F HALLIBURTON COM 406216101 17,314 2,007 13.11 702 3.08 0.0539
2018-07-19 2018-06-30 13F HALLIBURTON COM 406216101 15,307 1,150 8.12 681 4.45 0.0622
2018-05-11 2018-03-31 13F HALLIBURTON COM 406216101 14,157 -317 -2.19 652 -13.87 0.0745
2018-02-08 2017-12-31 13F HALLIBURTON COM 406216101 14,474 2,455 20.43 757 40.19 0.1024
2017-11-13 2017-09-30 13F HALLIBURTON Common Stock 406216101 12,019 -1,068 -8.16 540 -2.35 0.0839
2017-08-17 2017-06-30 13F/A-1 HALLIBURTON Common Stock 406216101 13,087 13,087 554 0.0951
2017-08-16 2017-06-30 13F RPM INTL Common Stock 406216101 13,087 554
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.