Occidental Petroleum Corporation
BG ˙ BUL ˙ US6745991058
SecurityBG:OPC / Occidental Petroleum Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership81,722 shares
Latest Disclosed Value $ 5,309,887
Janus Henderson Group Plc reports 38.84% increase in ownership of OPC / Occidental Petroleum Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 81,722 shares of Occidental Petroleum Corporation (BG:OPC) valued at $5,309,887 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 58,859 shares of Occidental Petroleum Corporation. This represents a change in shares of 38.84% 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)
2026-05-18 2026-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 81,722 22,863 38.84 5,310 119.38 0.0009
2026-05-15 2026-03-31 13F OCCIDENTAL PETE COM 674599105 81,722 22,863 38.84 5,310 119.38 0.0010
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM 674599105 58,859 1,450 2.53 2,420 -10.80 0.0011
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM 674599105 57,409 -143,301 -71.40 2,713 -67.82 0.0012
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM 674599105 200,710 138,424 222.24 8,431 177.30 0.0041
2025-05-15 2025-03-31 13F OCCIDENTAL PETE COM 674599105 62,286 -67,032 -51.84 3,040 -52.43 0.0017
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 129,318 -1,950,509 -93.78 6,391 -94.04 0.0032
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 2,079,827 -224,967 -9.76 107,194 -26.21 0.0549
2024-08-14 2024-06-30 13F OCCIDENTAL PETE COM 674599105 2,304,794 -533,973 -18.81 145,264 -21.26 0.0778
2024-05-15 2024-03-31 13F OCCIDENTAL PETE COM 674599105 2,838,767 -242,636 -7.87 184,490 0.27 0.1006
2024-02-14 2023-12-31 13F OCCIDENTAL PETE COM 674599105 3,081,403 -156,351 -4.83 183,990 -12.41 0.1097
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 3,237,754 -26,701 -0.82 210,069 9.44 0.1376
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 3,264,455 25,944 0.80 191,949 -5.06 0.1194
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM 674599105 3,238,511 835,772 34.78 202,179 33.59 0.1333
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 2,402,739 -3,829 -0.16 151,348 2.34 0.1081
2023-01-13 2022-09-30 13F/A-1 OCCIDENTAL PETE COM 674599105 2,406,568 -13,826 -0.57 147,884 3.77 0.1108
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 2,406,568 -13,826 147,884 0.1107
2022-08-15 2022-06-30 13F OCCIDENTAL PETE COM 674599105 2,420,394 -416,347 -14.68 142,517 -11.46 0.0983
2022-05-16 2022-03-31 13F OCCIDENTAL PETE COM 674599105 2,836,741 -118,205 -4.00 160,960 87.90 0.0777
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM 674599105 2,954,946 2,782,824 1,616.77 85,663 1,583.30 0.0357
2021-11-16 2021-09-30 13F OCCIDENTAL PETE COM 674599105 172,122 -26,871 -13.50 5,089 -18.21 0.0022
2021-08-16 2021-06-30 13F OCCIDENTAL PETE COM 674599105 198,993 -193,106 -49.25 6,222 -40.39 0.0027
2021-05-17 2021-03-31 13F OCCIDENTAL PETE COM 674599105 392,099 -77,652 -16.53 10,438 28.37 0.0048
2021-02-16 2020-12-31 13F OCCIDENTAL PETE COM 674599105 469,751 232,148 97.70 8,131 241.93 0.0038
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM 674599105 237,603 -139,161 -36.94 2,378 -65.51 0.0012
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM 674599105 376,764 157,050 71.48 6,894 171.10 0.0039
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM 674599105 219,714 -2,209,523 -90.96 2,543 -97.46 0.0018
2020-02-18 2019-12-31 13F OCCIDENTAL PETE COM 674599105 2,429,237 -1,226,364 -33.55 100,074 -38.45 0.0512
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM 674599105 3,655,601 750,514 25.83 162,590 11.32 0.0881
2019-07-31 2019-06-30 13F OCCIDENTAL PETE COM 674599105 2,905,087 154,497 5.62 146,057 -19.79 0.0795
2019-04-30 2019-03-31 13F OCCIDENTAL PETE COM 674599105 2,750,590 -83,183 -2.94 182,094 4.69 0.1009
2019-02-06 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 2,833,773 673,890 31.20 173,940 -1.99 0.1109
2018-11-09 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 2,159,883 719,838 49.99 177,469 47.27 0.0948
2018-08-10 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,440,045 95,629 7.11 120,506 37.98 0.0687
2018-05-14 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,344,416 571,315 73.90 87,336 53.30 0.0515
2018-03-12 2017-12-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 773,101 -113,887 -12.84 56,969 0.03 0.0351
2018-02-09 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 773,101 -113,887 56,969
2017-11-14 2017-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 886,988 401,102 82.55 56,951 95.30 0.0365
2017-08-17 2017-06-30 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 485,886 370,162 319.87 29,161 297.72 0.0199
2017-08-14 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 485,886 370,162 29,161
2017-05-03 2017-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 115,724 67 0.06 7,332 -11.01 0.0515
2017-01-30 2016-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 115,657 7,452 6.89 8,239 4.41 0.0608
2016-10-24 2016-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 108,205 -79,948 -42.49 7,891 -44.50 0.0582
2016-07-29 2016-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 188,153 -45,149 -19.35 14,218 -10.96 0.1182
2016-05-12 2016-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 233,302 -51,847 -18.18 15,968 -17.18 0.1295
2016-02-03 2015-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 285,149 64,642 29.32 19,281 32.20 0.1547
2015-11-16 2015-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 220,507 -5,652 -2.50 14,585 -17.06 0.1285
2015-08-17 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 226,159 -57,406 -20.24 17,585 -15.08 0.1382
2015-06-02 2015-03-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 283,565 -12,950 -4.37 20,707 -13.35 0.1597
2015-05-15 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 283,565 20,707
2015-02-12 2014-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 296,515 -1,041 -0.35 23,898 -16.49 0.1723
2014-11-12 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 297,556 6,676 2.30 28,616 -4.11 0.2692
2014-08-13 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 290,880 26,241 9.92 29,843 18.33 0.2787
2014-05-08 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 264,639 8,403 3.28 25,220 3.49 0.2455
2014-01-14 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 256,236 4,947 1.97 24,369 3.67 0.2462
2013-11-12 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 251,289 4,638 1.88 23,507 5.88 0.2593
2013-08-15 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 246,651 246,651 22,202 0.2595
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.