Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership19,804 shares
Latest Disclosed Value $ 1,287,313
Advisory Services Network, LLC reports 0.42% decrease in ownership of OXY / Occidental Petroleum Corporation

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 19,804 shares of Occidental Petroleum Corporation (CH:OXY) valued at $1,287,313 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,888 shares of Occidental Petroleum Corporation. This represents a change in shares of -0.42% 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 CORP COM Stock 674599105 19,804 -84 -0.42 1,287 57.53 0.0119
2026-02-17 2025-12-31 13F OCCIDENTAL PETE CORP COM Stock 674599105 19,888 -1,984 -9.07 818 -20.91 0.0116
2025-11-18 2025-09-30 13F OCCIDENTAL PETE Stock 674599105 21,872 -5,677 -20.61 1,033 -14.63 0.0152
2025-08-19 2025-06-30 13F OCCIDENTAL PETE Stock 674599105 27,549 41 0.15 1,211 -10.83 0.0195
2025-05-15 2025-03-31 13F OCCIDENTAL PETE Stock 674599105 27,508 6,300 29.71 1,358 29.61 0.0261
2025-02-13 2024-12-31 13F OCCIDENTAL PETE Stock 674599105 21,208 6,925 48.48 1,048 16.33 0.0195
2024-11-14 2024-09-30 13F OCCIDENTAL PETE Stock 674599105 14,283 0 0.00 900 0.00 0.0186
2024-08-13 2024-06-30 13F OCCIDENTAL PETE Stock 674599105 14,283 -1,282 -8.24 900 -10.98 0.0186
2024-05-06 2024-03-31 13F OCCIDENTAL PETE Stock 674599105 15,565 -720 -4.42 1,012 4.01 0.0224
2024-02-09 2023-12-31 13F OCCIDENTAL PETE Stock 674599105 16,285 -4,072 -20.00 972 -26.36 0.0238
2023-11-14 2023-09-30 13F OCCIDENTAL PETE Stock 674599105 20,357 -7,545 -27.04 1,321 -19.51 0.0355
2023-08-09 2023-06-30 13F OCCIDENTAL PETE Stock 674599105 27,902 5,465 24.36 1,641 17.14 0.0437
2023-05-17 2023-03-31 13F OCCIDENTAL PETE Stock 674599105 22,437 -6,717 -23.04 1,401 -23.75 0.0388
2023-02-13 2022-12-31 13F OCCIDENTAL PETE Stock 674599105 29,154 -3,432 -10.53 1,836 -8.29 0.0563
2022-11-14 2022-09-30 13F OCCIDENTAL PETE Stock 674599105 32,586 2,936 9.90 2,002 14.66 0.0707
2022-08-02 2022-06-30 13F OCCIDENTAL PETE Stock 674599105 29,650 15,681 112.26 1,746 120.18 0.0597
2022-05-23 2022-03-31 13F OCCIDENTAL PETE Stock 674599105 13,969 4,169 42.54 793 179.23 0.0233
2022-02-14 2021-12-31 13F OCCIDENTAL PETE Stock 674599105 9,800 9,800 284 0.0082
2021-11-05 2021-09-30 13F OCCIDENTAL PETE Stock 674599105 0 -12,691 -100.00 0 -100.00
2021-08-12 2021-06-30 13F OCCIDENTAL PETE Stock 674599105 12,691 12,691 397 0.0125
2021-05-24 2021-03-31 13F OCCIDENTAL PETE Stock 674599105 0 -5,042 -100.00 0 -100.00
2021-02-09 2020-12-31 13F OCCIDENTAL PETE Stock 674599105 5,042 -9,830 -66.10 87 -41.22 0.0035
2020-11-16 2020-09-30 13F OCCIDENTAL PETE Stock 674599105 14,872 -5,700 -27.71 148 -60.74 0.0070
2020-08-10 2020-06-30 13F OCCIDENTAL PETROLEUM Stock 674599105 20,572 1,621 8.55 377 72.15 0.0207
2020-05-15 2020-03-31 13F OCCIDENTAL PETE Stock 674599105 18,951 -29,838 -61.16 219 -89.10 0.0143
2020-02-04 2019-12-31 13F OCCIDENTAL PETE Stock 674599105 48,789 39,104 403.76 2,010 312.73 0.1057
2019-11-04 2019-09-30 13F OCCIDENTAL PETE Stock 674599105 9,685 0 0.00 487 0.00 0.0298
2019-08-01 2019-06-30 13F OCCIDENTAL PETE Stock 674599105 9,685 -346 -3.45 487 -26.66 0.0299
2019-05-20 2019-03-31 13F OCCIDENTAL PETE Stock 674599105 10,031 -71 -0.70 664 7.10 0.0466
2019-02-15 2018-12-31 13F OCCIDENTAL PETE CORP DEL Stock 674599105 10,102 -1,266 -11.14 620 -33.69 0.0541
2018-11-02 2018-09-30 13F OCCIDENTAL PETE CORP DEL Stock 674599105 11,368 1,328 13.23 935 10.65 0.0682
2018-07-27 2018-06-30 13F OCCIDENTAL PETE CORP DEL Stock 674599105 10,040 -286 -2.77 845 25.93 0.0644
2018-04-23 2018-03-31 13F OCCIDENTAL PETE CORP DEL Stock 674599105 10,326 690 7.16 671 -5.49 0.0536
2018-02-08 2017-12-31 13F OCCIDENTAL PETE CORP DEL Stock 674599105 9,636 6,696 227.76 710 275.66 0.0619
2017-10-12 2017-09-30 13F OCCIDENTAL PETE CORP DEL Stock 674599105 2,940 -583 -16.55 189 -10.43 0.0216
2017-08-17 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM Stock 674599105 3,523 -48 -1.34 211 -6.64 0.0275
2017-04-28 2017-03-31 13F OCCIDENTAL PETE CORP DEL COM Stock 674599105 3,571 653 22.38 226 6.10 0.0328
2016-10-07 2016-09-30 13F OCCIDENTAL PETE CORP DEL Stock 674599105 2,918 819 39.02 213 33.96 0.0400
2016-07-27 2016-06-30 13F OCCIDENTAL PETE CORP DEL Stock 674599105 2,099 158 8.14 159 19.55 0.0361
2016-04-21 2016-03-31 13F OCCIDENTAL PETE CORP DEL Stock 674599105 1,941 1,101 131.07 133 133.33 0.0363
2016-01-27 2015-12-31 13F OCCIDENTAL PETE CORP DEL COM Stock 674599105 840 -279 -24.93 57 -22.97 0.0183
2015-10-01 2015-09-30 13F OCCIDENTAL PETE CORP DEL COM Stock 674599105 1,119 226 25.31 74 8.82 0.0223
2015-07-02 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM Stock 674599105 893 -5,466 -85.96 68 -86.04 0.0201
2015-04-08 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM Stock 674599105 6,359 158 2.55 487 0.62 0.1345
2015-01-23 2014-12-31 13F OCCIDENTAL PETE CORP DEL Stock 674599105 6,201 -2,708 -30.40 484 -43.52 0.1513
2014-10-07 2014-09-30 13F OCCIDENTAL PETE CORP DEL Stock 674599105 8,909 40 0.45 857 -5.82 0.3134
2014-07-10 2014-06-30 13F OCCIDENTAL PETE CORP DEL Stock 674599105 8,869 2,215 33.29 910 43.53 0.3852
2014-04-09 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM Stock 674599105 6,654 6,467 3,458.29 634 3,422.22 0.3269
2014-02-13 2013-12-31 13F OCCIDENTAL PETE CORP DEL Stock 674599105 187 187 18 0.0090
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.