Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership6,496,660 shares
Latest Disclosed Value $ 422,282,900
Northern Trust Corp reports 0.09% increase in ownership of OXY / Occidental Petroleum Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 6,496,660 shares of Occidental Petroleum Corporation (CH:OXY) valued at $422,282,900 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 6,490,716 shares of Occidental Petroleum Corporation. This represents a change in shares of 0.09% 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)
2026-05-14 2026-03-31 13F OCCIDENTAL PETE COM 674599105 6,496,660 5,944 0.09 422,283 58.22 0.0114
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM 674599105 6,490,716 -472,612 -6.79 266,898 -18.88 0.0340
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM 674599105 6,963,328 -127,564 -1.80 329,017 10.45 0.0421
2025-08-13 2025-06-30 13F OCCIDENTAL PETE COM 674599105 7,090,892 -84,547 -1.18 297,888 -15.89 0.0410
2025-05-13 2025-03-31 13F OCCIDENTAL PETE COM 674599105 7,175,439 110,378 1.56 354,180 1.46 0.0526
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 7,065,061 491,797 7.48 349,085 3.04 0.0494
2024-11-13 2024-09-30 13F OCCIDENTAL PETE COM 674599105 6,573,264 -119,046 -1.78 338,786 -19.68 0.0555
2024-08-14 2024-06-30 13F OCCIDENTAL PETE COM 674599105 6,692,310 -229,582 -3.32 421,816 -6.23 0.0711
2024-05-14 2024-03-31 13F OCCIDENTAL PETE COM 674599105 6,921,892 -365,002 -5.01 449,854 3.39 0.0777
2024-02-13 2023-12-31 13F OCCIDENTAL PETE COM 674599105 7,286,894 -80,264 -1.09 435,100 -8.97 0.0788
2023-11-13 2023-09-30 13F OCCIDENTAL PETE COM 674599105 7,367,158 -595,984 -7.48 477,981 2.08 0.0926
2023-08-11 2023-06-30 13F OCCIDENTAL PETE COM 674599105 7,963,142 -658,029 -7.63 468,233 -13.00 0.0900
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM 674599105 8,621,171 -403,489 -4.47 538,220 -5.32 0.1067
2023-02-13 2022-12-31 13F OCCIDENTAL PETE COM 674599105 9,024,660 -316,554 -3.39 568,463 -0.97 0.1193
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 9,341,214 -866,644 -8.49 574,018 -4.50 0.1311
2022-08-12 2022-06-30 13F OCCIDENTAL PETE COM 674599105 10,207,858 -64,672 -0.63 601,038 3.12 0.1287
2022-05-13 2022-03-31 13F OCCIDENTAL PETE COM 674599105 10,272,530 -188,496 -1.80 582,863 92.20 0.1025
2022-02-08 2021-12-31 13F OCCIDENTAL PETE COM 674599105 10,461,026 -87,218 -0.83 303,266 -2.80 0.0497
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM 674599105 10,548,244 476,537 4.73 312,018 -0.93 0.0552
2021-08-13 2021-06-30 13F OCCIDENTAL PETE COM 674599105 10,071,707 53,810 0.54 314,942 18.10 0.0555
2021-05-12 2021-03-31 13F OCCIDENTAL PETE COM 674599105 10,017,897 324,546 3.35 266,676 58.93 0.0496
2021-02-11 2020-12-31 13F OCCIDENTAL PETE COM 674599105 9,693,351 -609,351 -5.91 167,792 62.70 0.0327
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM 674599105 10,302,702 -230,376 -2.19 103,130 -46.50 0.0226
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM 674599105 10,533,078 -1,324,982 -11.17 192,755 40.37 0.0457
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM 674599105 11,858,060 479,037 4.21 137,316 -70.72 0.0394
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM 674599105 11,379,023 125,952 1.12 468,929 -6.29 0.1050
2019-11-13 2019-09-30 13F OCCIDENTAL PETE COM 674599105 11,253,071 1,496,681 15.34 500,424 2.01 0.1198
2019-08-13 2019-06-30 13F OCCIDENTAL PETE COM 674599105 9,756,390 -137,038 -1.39 490,552 -25.10 0.1164
2019-05-13 2019-03-31 13F OCCIDENTAL PETE COM 674599105 9,893,428 2,797 0.03 654,944 7.88 0.1618
2019-02-12 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,890,631 246,720 2.56 607,087 -23.39 0.1703
2018-11-14 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,643,911 -108,016 -1.11 792,441 -2.89 0.1939
2018-09-18 2018-06-30 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 9,751,927 -37,373 -0.38 816,041 28.33 0.2072
2018-08-14 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,801,742 12,442 820,210
2018-05-09 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,789,300 -39,238 -0.40 635,912 -12.16 0.1654
2018-02-14 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,828,538 -122,684 -1.23 723,970 13.30 0.1833
2017-11-13 2017-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,951,222 510,677 5.41 638,969 13.05 0.1665
2017-08-11 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,440,545 -1,006,704 -9.64 565,204 -14.61 0.1580
2017-05-12 2017-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,447,249 226,716 2.22 661,938 -9.08 0.1909
2017-02-13 2016-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,220,533 -282,131 -2.69 728,009 -4.94 0.2233
2016-11-09 2016-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,502,664 242,646 2.36 765,854 -1.21 0.2385
2016-08-12 2016-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,260,018 64,952 0.64 775,248 11.39 0.2517
2016-08-19 2016-03-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 10,195,066 32,587 0.32 695,962 1.29 0.2309
2016-05-13 2016-03-31 13F Occidental Pete COMM 674599105 10,195,024 697,645
2016-02-12 2015-12-31 13F Occidental Pete COMM 674599105 10,162,479 -336,057 -3.20 687,084 -1.06 0.2278
2015-11-12 2015-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,498,536 10,498,536 0.00 694,478 0.2318
2015-08-13 2015-06-30 13F Occidental Pete COMM 674599105 0 -10,260,240 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Occidental Pete COMM 674599105 10,260,240 -112,828 -1.09 748,997 -10.43 0.2253
2015-02-12 2014-12-31 13F Occidental Pete COM 674599105 10,373,068 6,310 0.06 836,172 -16.11 0.2524
2014-11-13 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 10,366,758 -353,139 -3.29 996,763 -9.40 0.3130
2014-08-14 2014-06-30 13F OCCIDENTAL PETE CORP DEL com 674599105 10,719,897 -184,155 -1.69 1,100,183 5.88 0.3429
2014-05-14 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,904,052 -196,873 -1.77 1,039,047 -1.58 0.3269
2014-02-21 2013-12-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 11,100,925 -64,653 -0.58 1,055,699 1.08 0.3386
2014-02-12 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 11,100,925 1,055,699
2013-11-13 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 11,165,578 -352,230 -3.06 1,044,428 1.62 0.3678
2013-08-09 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 11,517,808 11,517,808 1,027,735 0.3724
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.