Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionGWM Advisors LLC
Latest Disclosed Ownership34,158 shares
Latest Disclosed Value $ 1,495,810
GWM Advisors LLC reports 38.95% decrease in ownership of OXY / Occidental Petroleum Corporation

On May 15, 2026 - GWM Advisors LLC filed a 13F-HR form disclosing ownership of 34,158 shares of Occidental Petroleum Corporation (CH:OXY) valued at $1,495,810 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 55,950 shares of Occidental Petroleum Corporation. This represents a change in shares of -38.95% 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 OCCIDENTAL PETE COM 674599105 34,158 -21,792 -38.95 1,496 -35.00 0.0693
2026-02-18 2025-12-31 13F OCCIDENTAL PETE COM 674599105 55,950 -10,826 -16.21 2,301 -27.10 0.0083
2025-11-17 2025-09-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 66,776 7,917 13.45 3,155 27.63 0.0143
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM 674599105 58,859 -979 -1.64 2,473 -16.29 0.0127
2025-05-15 2025-03-31 13F OCCIDENTAL PETROLEUM Common Stock 674599105 59,838 -5,984 -9.09 2,954 -9.19 0.0175
2025-02-13 2024-12-31 13F OCCIDENTAL PETE COM 674599105 65,822 -5,622 -7.87 3,252 -11.68 0.0195
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 71,444 -39 -0.05 3,682 -18.27 0.0239
2024-08-16 2024-06-30 13F OCCIDENTAL PETE COM 674599105 71,483 -11,466 -13.82 4,506 -16.42 0.0328
2024-05-14 2024-03-31 13F OCCIDENTAL PETE COM 674599105 82,949 1,388 1.70 5,391 13.40 0.0470
2024-02-13 2023-12-31 13F OCCIDENTAL PETE COM 674599105 81,561 5,350 7.02 4,754 -3.86 0.0451
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 76,211 25,363 49.88 4,945 65.41 0.0543
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 50,848 -31,467 -38.23 2,990 -41.64 0.0338
2023-05-12 2023-03-31 13F OCCIDENTAL PETE COM 674599105 82,315 10,101 13.99 5,123 103.25 0.0640
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 72,214 -18,964 -20.80 2,520 -55.02 0.0680
2022-11-14 2022-09-30 13F OCCIDENTAL PETROLEUM COM 674599105 91,178 6,086 7.15 5,603 11.86 0.0921
2022-08-09 2022-06-30 13F OCCIDENTAL PETE COM 674599105 85,092 50,234 144.11 5,009 153.24 0.0830
2022-05-13 2022-03-31 13F OCCIDENTAL PETROLEUM Common Stock 674599105 34,858 23,305 201.72 1,978 490.45 0.0318
2022-02-17 2021-12-31 13F OCCIDENTAL PETROLEUM Common Stock 674599105 11,553 -1,220 -9.55 335 -11.38 0.0051
2021-10-29 2021-09-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 12,773 -15,594 -54.97 378 -57.38 0.0093
2021-07-22 2021-06-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 28,367 -7,310 -20.49 887 -6.63 0.0236
2021-04-26 2021-03-31 13F OCCIDENTAL PETROLEUM Common Stock 674599105 35,677 22,659 174.06 950 322.22 0.0283
2021-01-27 2020-12-31 13F OCCIDENTAL PETROLEUM Common Stock 674599105 13,018 740 6.03 225 82.93 0.0074
2020-11-03 2020-09-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 12,278 -4,724 -27.78 123 -60.45 0.0043
2020-07-29 2020-06-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 17,002 -1,989 -10.47 311 41.36 0.0122
2020-05-04 2020-03-31 13F OCCIDENTAL PETROLEUM COM 674599105 18,991 8,005 72.87 220 -51.33 0.0106
2020-01-31 2019-12-31 13F OCCIDENTAL PETROLEUM Common Stock 674599105 10,986 -3,052 -21.74 452 -26.14 0.0180
2019-11-06 2019-09-30 13F OCCIDENTAL PETE COM 674599105 14,038 5,128 57.55 612 36.61 0.0272
2019-08-05 2019-06-30 13F OCCIDENTAL PETE COM 674599105 8,910 915 11.44 448 -15.31 0.0274
2019-05-14 2019-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 7,995 85 1.07 529 8.85 0.0342
2019-05-09 2019-03-31 13F OCCIDENTAL PETE COM 674599105 12,390 4,480 17
2019-01-28 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 7,910 -4,804 -37.79 486 -53.49 0.0313
2018-10-29 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 12,714 1,742 15.88 1,045 15.47 0.0803
2018-07-19 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,972 733 7.16 905 36.71 0.0827
2018-05-11 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,239 -1,792 -14.89 662 -26.85 0.0756
2018-02-08 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 12,031 409 3.52 905 21.64 0.1224
2017-11-13 2017-09-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 11,622 1,107 10.53 744 20.58 0.1156
2017-08-17 2017-06-30 13F/A-1 OCCIDENTAL PETROLEUM Common Stock 674599105 10,515 -2,145 -16.94 618 -22.87 0.1062
2017-08-16 2017-06-30 13F CONSOL ENERGY Common Stock 674599105 10,515 -2,145 618
2017-05-09 2017-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 12,660 3,261 34.70 800 22.89 0.1818
2017-02-02 2016-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,399 1,490 18.84 651 12.82 0.1806
2017-01-18 2016-09-30 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 7,909 2,242 39.56 577 35.76 0.1820
2016-10-20 2016-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 7,984 581
2016-07-14 2016-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 5,667 5,667 425 0.1758
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.