Occidental Petroleum Corporation
CH ˙ BRSE ˙ US6745991058
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:OPC / Occidental Petroleum Corporation
InstitutionDark Forest Capital Management Lp
Latest Disclosed Ownership26,959 shares
Latest Disclosed Value $ 1,752,335
Dark Forest Capital Management Lp ownership in OPC / Occidental Petroleum Corporation

On May 15, 2026 - Dark Forest Capital Management Lp filed a 13F-HR form disclosing ownership of 26,959 shares of Occidental Petroleum Corporation (CH:OPC) valued at $1,752,335 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Occidental Petroleum Corporation.

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 PETROLEUM 0 674599105 26,959 26,959 1,752 0.1556
2026-02-17 2025-12-31 13F OCCIDENTAL PETROLEUM REIT 674599105 0 -108,445 -100.00 0 -100.00
2025-11-17 2025-09-30 13F/A-1 OCCIDENTAL PETROLEUM REIT 674599105 108,445 -80,589 -42.63 5,124 -35.47 0.1928
2025-11-14 2025-09-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 189,034 0 7,941 0.3154
2025-08-14 2025-06-30 13F OCCIDENTAL PETROLEUM Common Stock 674599105 189,034 62,591 49.50 7,941 27.24 0.3165
2025-05-15 2025-03-31 13F OCCIDENTAL PETROLEUM Common Stock 674599105 126,443 119,224 1,651.53 6,241 1,653.09 0.2836
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 7,219 -1,298 -15.24 357 -18.72 0.0526
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 8,517 8,517 439 0.0561
2023-11-13 2023-09-30 13F OCCIDENTAL PETE Stock 674599105 0 -11,145 -100.00 0 -100.00
2023-08-14 2023-06-30 13F OCCIDENTAL PETE Stock 674599105 11,145 7,865 239.79 655 221.08 0.0605
2023-05-12 2023-03-31 13F OCCIDENTAL PETROLEUM Stock 674599105 3,280 3,151 2,442.64 205 2,450.00 0.0490
2023-02-13 2022-12-31 13F OCCIDENTAL PETROLEUM Stock 674599105 129 74 134.55 8 166.67 0.0020
2022-11-14 2022-09-30 13F OCCIDENTAL PETROLEUM Stock 674599105 55 55 3 0.0005
2022-08-15 2022-06-30 13F OCCIDENTAL PETROLEUM COM 674599105 0 -771 -100.00 0 -100.00
2022-05-13 2022-03-31 13F OCCIDENTAL PETROLEUM COM 674599105 771 754 4,435.29 43 0.0101
2022-02-11 2021-12-31 13F OCCIDENTAL PETE COM 674599105 17 -797 -97.91 0 -100.00
2021-11-16 2021-09-30 13F/A-1 OCCIDENTAL PETE Stock 674599105 814 800 5,714.29 24 0.0085
2021-11-12 2021-09-30 13F OCCIDENTAL PETE Stock 674599105 814 800 24 0.0044
2021-08-16 2021-06-30 13F OCCIDENTAL PETE Stock 674599105 14 14 0 0.0000
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.