Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionRafferty Asset Management, LLC
Latest Disclosed Ownership264,770 shares
Latest Disclosed Value $ 17,210,050
Rafferty Asset Management, LLC reports 5.45% increase in ownership of OXY / Occidental Petroleum Corporation

On May 15, 2026 - Rafferty Asset Management, LLC filed a 13F-HR form disclosing ownership of 264,770 shares of Occidental Petroleum Corporation (CH:OXY) valued at $17,210,050 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 251,089 shares of Occidental Petroleum Corporation. This represents a change in shares of 5.45% 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.

Upgrade to unlock premium data and export to Excel .

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 264,770 13,681 5.45 17,210 66.70 0.0699
2026-02-13 2025-12-31 13F OCCIDENTAL PETE COM 674599105 251,089 3,844 1.55 10,325 -11.62 0.0357
2025-11-12 2025-09-30 13F OCCIDENTAL PETE COM 674599105 247,245 -19,212 -7.21 11,682 4.37 0.0379
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM 674599105 266,457 20,372 8.28 11,194 -7.85 0.0369
2025-05-14 2025-03-31 13F OCCIDENTAL PETE COM 674599105 246,085 -43,116 -14.91 12,147 -15.00 0.0518
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 289,201 14,070 5.11 14,289 0.77 0.0506
2024-11-13 2024-09-30 13F OCCIDENTAL PETE COM 674599105 275,131 3,392 1.25 14,180 -17.21 0.0486
2024-08-13 2024-06-30 13F OCCIDENTAL PETE COM 674599105 271,739 25,454 10.34 17,128 7.00 0.0636
2024-05-13 2024-03-31 13F OCCIDENTAL PETE COM 674599105 246,285 -50,933 -17.14 16,006 -9.81 0.0597
2024-02-13 2023-12-31 13F OCCIDENTAL PETE COM 674599105 297,218 8,711 3.02 17,747 -5.19 0.0748
2023-11-13 2023-09-30 13F OCCIDENTAL PETE COM 674599105 288,507 -46,664 -13.92 18,718 -5.02 0.1100
2023-08-11 2023-06-30 13F OCCIDENTAL PETE COM 674599105 335,171 -29,281 -8.03 19,708 -13.38 0.1111
2023-05-11 2023-03-31 13F OCCIDENTAL PETE COM 674599105 364,452 -21,097 -5.47 22,753 -6.31 0.1542
2023-02-13 2022-12-31 13F OCCIDENTAL PETE COM 674599105 385,549 35,151 10.03 24,286 12.79 0.2033
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 350,398 -143,093 -29.00 21,532 -25.90 0.2292
2022-08-12 2022-06-30 13F OCCIDENTAL PETE COM 674599105 493,491 -91,841 -15.69 29,057 -12.51 0.2674
2022-05-13 2022-03-31 13F OCCIDENTAL PETE COM 674599105 585,332 -117,825 -16.76 33,212 62.92 0.1968
2022-02-10 2021-12-31 13F OCCIDENTAL PETE COM 674599105 703,157 19,105 2.79 20,385 0.75 0.1073
2021-11-10 2021-09-30 13F OCCIDENTAL PETE COM 674599105 684,052 -153,334 -18.31 20,234 -22.73 0.1382
2021-08-10 2021-06-30 13F OCCIDENTAL PETE COM 674599105 837,386 374,865 81.05 26,185 112.68 0.1649
2021-05-10 2021-03-31 13F OCCIDENTAL PETE COM 674599105 462,521 62,505 15.63 12,312 77.82 0.0841
2021-02-10 2020-12-31 13F OCCIDENTAL PETE COM 674599105 400,016 106,385 36.23 6,924 135.59 0.0677
2020-11-13 2020-09-30 13F OCCIDENTAL PETE COM 674599105 293,631 -60,468 -17.08 2,939 -54.65 0.0355
2020-08-07 2020-06-30 13F OCCIDENTAL PETE COM 674599105 354,099 261,518 282.47 6,480 504.48 0.0913
2020-05-15 2020-03-31 13F OCCIDENTAL PETE COM 674599105 92,581 -132,397 -58.85 1,072 -88.44 0.0449
2020-02-10 2019-12-31 13F OCCIDENTAL PETE COM 674599105 224,978 -61,136 -21.37 9,271 -27.13 0.1426
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM 674599105 286,114 110,490 62.91 12,723 44.09 0.1990
2019-08-09 2019-06-30 13F OCCIDENTAL PETE COM 674599105 175,624 137,296 358.21 8,830 248.05 0.1552
2019-05-15 2019-03-31 13F OCCIDENTAL PETE COM 674599105 38,328 38,328 2,537 0.0408
2019-02-11 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -36,184 -100.00 0 -100.00
2018-11-09 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 36,184 -12,003 -24.91 2,973 -26.26 0.0461
2018-08-14 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 48,187 48,187 4,032 0.0602
2018-02-14 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -64,164 -100.00 0 -100.00
2017-11-13 2017-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 64,164 20,273 46.19 4,120 56.77 0.0924
2017-08-11 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 43,891 43,891 2,628 0.0754
2014-11-14 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -4,959 -100.00 0 -100.00
2014-08-13 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 4,959 4,959 509 0.0979
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.