Occidental Petroleum Corporation
US ˙ NYSE ˙ US6745991058

SecurityOXY / Occidental Petroleum Corporation
InstitutionHolocene Advisors, LP
Latest Disclosed Ownership1,206,194 shares
Latest Disclosed Value $ 78,402,610
Holocene Advisors, LP ownership in OXY / Occidental Petroleum Corporation

On May 15, 2026 - Holocene Advisors, LP filed a 13F-HR form disclosing ownership of 1,206,194 shares of Occidental Petroleum Corporation (US:OXY) valued at $78,402,610 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Occidental Petroleum Corporation. The current value of the position is $71,937,410 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 1,206,194 1,206,194 78,403 0.1891
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM 674599105 0 -741,726 -100.00 0 -100.00
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM 674599105 741,726 682,320 1,148.57 35,047 1,304.65 0.0799
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM 674599105 59,406 59,406 2,496 0.0061
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 0 -7,042 -100.00 0 -100.00
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 7,042 7,042 414 0.0018
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 0 -429,026 -100.00 0 -100.00
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 429,026 297,547 226.31 26,364 240.58 0.1684
2022-08-15 2022-06-30 13F OCCIDENTAL PETE COM 674599105 131,479 -225,417 -63.16 7,741 -61.77 0.0468
2022-05-16 2022-03-31 13F OCCIDENTAL PETE COM 674599105 356,896 356,896 20,250 0.1055
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM 674599105 0 -542,350 -100.00 0 -100.00
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM 674599105 542,350 -1,795,088 -76.80 16,043 -78.05 0.0872
2021-08-16 2021-06-30 13F OCCIDENTAL PETE COM 674599105 2,337,438 1,130,214 93.62 73,092 127.45 0.4127
2021-05-17 2021-03-31 13F OCCIDENTAL PETE COM 674599105 1,207,224 422,279 53.80 32,136 136.52 0.2016
2021-02-16 2020-12-31 13F OCCIDENTAL PETE COM 674599105 784,945 784,945 13,587 0.0857
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM 674599105 0 -98,449 -100.00 0 -100.00
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM 674599105 98,449 98,449 1,802 0.0158
2020-05-15 2020-03-31 13F OCCIDENTAL PETE COM 674599105 0 -137,711 -100.00 0 -100.00
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM 674599105 137,711 -453,951 -76.72 5,675 -78.43 0.0509
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM 674599105 591,662 263,277 80.17 26,311 59.35 0.2709
2019-08-14 2019-06-30 13F OCCIDENTAL PETE COM 674599105 328,385 328,385 16,511 0.2106
2018-11-14 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -5,442 -100.00 0 -100.00
2018-08-14 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 5,442 -2,990 -35.46 455 -16.97 0.0097
2018-05-15 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 8,432 1,812 27.37 548 12.30 0.0124
2018-02-14 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 6,620 6,620 488 0.0124
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.