Occidental Petroleum Corporation
US ˙ NYSE ˙ US6745991058

SecurityOXY / Occidental Petroleum Corporation
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership124,816 shares
Latest Disclosed Value $ 8,113,030
Mercer Global Advisors Inc /adv reports 187.71% increase in ownership of OXY / Occidental Petroleum Corporation

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 124,816 shares of Occidental Petroleum Corporation (US:OXY) valued at $8,113,040 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 43,383 shares of Occidental Petroleum Corporation. This represents a change in shares of 187.71% during the quarter. The current value of the position is $7,105,775 USD.

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 124,816 81,433 187.71 8,113 355.02 0.0120
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM 674599105 43,383 -56,700 -56.65 1,784 -62.29 0.0027
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM 674599105 100,083 62,390 165.52 4,729 198.67 0.0079
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM 674599105 37,693 -14,829 -28.23 1,583 -38.93 0.0032
2025-05-15 2025-03-31 13F OCCIDENTAL PETE COM 674599105 52,522 13,679 35.22 2,592 35.07 0.0059
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 38,843 -11,344 -22.60 1,919 -28.18 0.0047
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 50,187 -261 -0.52 2,672 -29.52 0.0063
2024-08-12 2024-06-30 13F OCCIDENTAL PETE COM 674599105 50,448 4,113 8.88 3,791 126,266.67 0.0103
2024-05-15 2024-03-31 13F OCCIDENTAL PETE COM 674599105 46,335 -33,749 -42.14 3 -25.00 0.0086
2024-02-15 2023-12-31 13F OCCIDENTAL PETE COM 674599105 80,084 4,414 5.83 5 0.00 0.0144
2023-11-15 2023-09-30 13F/A-1 OCCIDENTAL PETE COM 674599105 75,670 -19,207 -20.24 5 -20.00 0.0186
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 75,670 -19,207 5 0.0186
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 94,877 2,129 2.30 6 0.00 0.0221
2023-05-16 2023-03-31 13F OCCIDENTAL PETE COM 674599105 92,748 9,436 11.33 6 0.00 0.0263
2023-02-09 2022-12-31 13F OCCIDENTAL PETE COM 674599105 83,312 19,947 31.48 5 -99.87 0.0263
2022-11-15 2022-09-30 13F OCCIDENTAL PETE COM 674599105 63,365 15,604 32.67 3,894 38.48 0.0231
2022-08-10 2022-06-30 13F OCCIDENTAL PETE COM 674599105 47,761 29,678 164.12 2,812 174.07 0.0172
2022-05-10 2022-03-31 13F OCCIDENTAL PETE COM 674599105 18,083 5,365 42.18 1,026 178.05 0.0060
2022-02-04 2021-12-31 13F OCCIDENTAL PETE COM 674599105 12,718 -2,978 -18.97 369 -20.47 0.0023
2021-11-10 2021-09-30 13F OCCIDENTAL PETE COM 674599105 15,696 -2,773 -15.01 464 -19.72 0.0032
2021-08-10 2021-06-30 13F OCCIDENTAL PETE COM 674599105 18,469 2,989 19.31 578 40.29 0.0044
2021-08-10 2021-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 15,480 1,751 12.75 412 73.11 0.0037
2021-05-11 2021-03-31 13F OCCIDENTAL PETE COM 674599105 15,480 1,751 412 0.0039
2021-02-12 2020-12-31 13F OCCIDENTAL PETE COM 674599105 13,729 -5,891 -30.03 238 21.43 0.0030
2020-12-10 2020-09-30 13F OCCIDENTAL PETE COM 674599105 19,620 -8,827 -31.03 196 -62.38 0.0029
2020-08-10 2020-06-30 13F OCCIDENTAL PETE COM 674599105 28,447 -12,410 -30.37 521 10.15 0.0095
2020-05-18 2020-03-31 13F OCCIDENTAL PETE COM 674599105 40,857 -14,650 -26.39 473 -79.32 0.0104
2020-02-13 2019-12-31 13F OCCIDENTAL PETE CORP COM COM 674599105 55,507 -2,912 -4.98 2,287 -11.94 0.0457
2019-11-12 2019-09-30 13F OCCIDENTAL PETE CORP COM COM 674599105 58,419 7,004 13.62 2,597 0.46 0.0611
2019-08-14 2019-06-30 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 51,415 -6,412 -11.09 2,585 -32.47 0.0685
2019-04-23 2019-03-31 13F/A-1 OCCIDENTAL PETE CORP COM COM 674599105 57,827 57,827 3,828 0.1377
2019-04-12 2019-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 49,144 3,016 0.1607
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.