Occidental Petroleum Corporation
BG ˙ BUL ˙ US6745991058
SecurityBG:OPC / Occidental Petroleum Corporation
InstitutionAviva Plc
Latest Disclosed Ownership634,017 shares
Latest Disclosed Value $ 41,211,105
Aviva Plc reports 2.90% increase in ownership of OPC / Occidental Petroleum Corporation

On May 14, 2026 - Aviva Plc filed a 13F-HR form disclosing ownership of 634,017 shares of Occidental Petroleum Corporation (BG:OPC) valued at $41,211,105 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 616,133 shares of Occidental Petroleum Corporation. This represents a change in shares of 2.90% 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 634,017 17,884 2.90 41,211 62.66 0.0691
2026-02-12 2025-12-31 13F OCCIDENTAL PETE COM 674599105 616,133 34,015 5.84 25,335 -7.89 0.0427
2025-11-13 2025-09-30 13F OCCIDENTAL PETE COM 674599105 582,118 56,795 10.81 27,505 24.64 0.0500
2025-08-07 2025-06-30 13F OCCIDENTAL PETE COM 674599105 525,323 78,672 17.61 22,069 0.10 0.0456
2025-05-15 2025-03-31 13F OCCIDENTAL PETE COM 674599105 446,651 63,382 16.54 22,047 16.42 0.0532
2025-02-13 2024-12-31 13F OCCIDENTAL PETE COM 674599105 383,269 -469,558 -55.06 18,937 -56.92 0.0492
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 852,827 22,291 2.68 43,955 -16.03 0.1139
2024-08-02 2024-06-30 13F OCCIDENTAL PETE COM 674599105 830,536 154,602 22.87 52,349 19.17 0.1451
2024-05-14 2024-03-31 13F OCCIDENTAL PETE COM 674599105 675,934 31,779 4.93 43,929 14.21 0.1446
2024-02-09 2023-12-31 13F OCCIDENTAL PETE COM 674599105 644,155 92,912 16.85 38,462 7.54 0.1379
2023-11-13 2023-09-30 13F OCCIDENTAL PETE COM 674599105 551,243 3,436 0.63 35,765 11.03 0.1504
2023-08-10 2023-06-30 13F OCCIDENTAL PETE COM 674599105 547,807 101,705 22.80 32,211 15.66 0.1312
2023-05-12 2023-03-31 13F OCCIDENTAL PETE COM 674599105 446,102 26,850 6.40 27,850 5.46 0.1261
2023-02-14 2022-12-31 13F/A-2 OCCIDENTAL PETE COM 674599105 419,252 47,603 12.81 26,409 15.63 0.1299
2023-02-10 2022-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 419,252 47,603 1,641 0.0078
2023-02-09 2022-12-31 13F OCCIDENTAL PETE COM 674599105 419,252 47,603 26 0.1269
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 371,649 -129,219 -25.80 22,838 -22.56 0.1316
2022-08-04 2022-06-30 13F OCCIDENTAL PETE COM 674599105 500,868 36,009 7.75 29,491 11.81 0.1569
2022-05-13 2022-03-31 13F OCCIDENTAL PETE COM 674599105 464,859 299,075 180.40 26,376 448.81 0.1319
2022-02-10 2021-12-31 13F OCCIDENTAL PETE COM 674599105 165,784 21,943 15.26 4,806 12.95 0.0201
2021-11-12 2021-09-30 13F OCCIDENTAL PETE COM 674599105 143,841 -23,303 -13.94 4,255 -18.60 0.0190
2021-08-10 2021-06-30 13F OCCIDENTAL PETE COM 674599105 167,144 -1,283 -0.76 5,227 16.57 0.0229
2021-05-13 2021-03-31 13F OCCIDENTAL PETE COM 674599105 168,427 -6,513 -3.72 4,484 48.08 0.0219
2021-02-10 2020-12-31 13F OCCIDENTAL PETE COM 674599105 174,940 9,948 6.03 3,028 83.29 0.0157
2020-11-12 2020-09-30 13F OCCIDENTAL PETE COM 674599105 164,992 -7,549 -4.38 1,652 -47.69 0.0097
2020-08-13 2020-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 172,541 -142,427 -45.22 3,158 -13.41 0.0197
2020-08-13 2020-06-30 13F OCCIDENTAL PETE COM 674599105 172,541 -142,427 3,158 9,560.6205
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM 674599105 314,968 185 0.06 3,647 -71.89 0.0267
2020-02-10 2019-12-31 13F OCCIDENTAL PETE COM 674599105 314,783 -1,192 -0.38 12,972 -7.68 0.0786
2019-11-12 2019-09-30 13F OCCIDENTAL PETE COM 674599105 315,975 38,188 13.75 14,051 0.60 0.0952
2019-07-30 2019-06-30 13F OCCIDENTAL PETE COM 674599105 277,787 -67,289 -19.50 13,967 -38.86 0.0959
2019-05-14 2019-03-31 13F OCCIDENTAL PETE COM 674599105 345,076 -4,163 -1.19 22,844 6.57 0.1533
2019-02-12 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 349,239 -84,443 -19.47 21,436 -39.85 0.1599
2018-11-13 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 433,682 -33,076 -7.09 35,636 -8.76 0.1954
2018-08-01 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 466,758 -18,526 -3.82 39,058 23.90 0.2305
2018-05-14 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 485,284 -35,512 -6.82 31,524 -17.82 0.1928
2018-02-13 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 520,796 -67,557 -11.48 38,362 1.55 0.2172
2017-11-13 2017-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 588,353 8,064 1.39 37,778 8.69 0.2033
2017-08-07 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 580,289 -784,601 -57.48 34,759 -59.81 0.1943
2017-05-15 2017-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,364,890 45,792 3.47 86,479 -7.97 0.4950
2017-02-13 2016-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,319,098 646,249 96.05 93,972 91.50 0.5613
2016-11-14 2016-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 672,849 14,878 2.26 49,071 -1.31 0.3062
2016-08-05 2016-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 657,971 62,198 10.44 49,723 21.96 0.3407
2016-05-12 2016-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 595,773 94,743 18.91 40,769 20.35 0.3030
2016-02-11 2015-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 501,030 37,222 8.03 33,875 10.41 0.2569
2015-11-12 2015-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 463,808 -39,636 -7.87 30,680 -21.64 0.2542
2015-08-06 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 503,444 -8,761 -1.71 39,153 4.71 0.2770
2015-05-14 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 512,205 512,205 0.00 37,391 0.2562
2015-02-05 2014-12-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 0 -433,033 -100.00 0 -100.00
2014-11-13 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 433,033 -1,392 -0.32 41,636 -6.61 0.3296
2014-08-13 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 434,425 3,638 0.84 44,585 8.61 0.3408
2014-05-14 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 430,787 -24,938 -5.47 41,050 -5.28 0.3327
2014-02-13 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 455,725 3,676 0.81 43,340 2.49 0.3623
2013-11-13 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 452,049 29,371 6.95 42,285 12.11 0.3708
2013-08-01 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 422,678 422,678 37,716 0.3813
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.