Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionNomura Asset Management Co Ltd
Latest Disclosed Ownership271,824 shares
Latest Disclosed Value $ 17,668,560
Nomura Asset Management Co Ltd reports 5.20% increase in ownership of OXY / Occidental Petroleum Corporation

On May 11, 2026 - Nomura Asset Management Co Ltd filed a 13F-HR form disclosing ownership of 271,824 shares of Occidental Petroleum Corporation (CH:OXY) valued at $17,668,560 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 258,389 shares of Occidental Petroleum Corporation. This represents a change in shares of 5.20% 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)
2026-05-11 2026-03-31 13F OCCIDENTAL PETE COM 674599105 271,824 13,435 5.20 17,669 66.30 0.0285
2026-02-10 2025-12-31 13F OCCIDENTAL PETE COM 674599105 258,389 776 0.30 10,625 -12.72 0.0269
2025-11-12 2025-09-30 13F OCCIDENTAL PETE COM 674599105 257,613 14,994 6.18 12,172 19.43 0.0318
2025-08-11 2025-06-30 13F OCCIDENTAL PETE COM 674599105 242,619 11,707 5.07 10,192 -10.57 0.0279
2025-05-12 2025-03-31 13F OCCIDENTAL PETE COM 674599105 230,912 36,821 18.97 11,398 18.84 0.0349
2025-02-12 2024-12-31 13F OCCIDENTAL PETE COM 674599105 194,091 -8,295 -4.10 9,590 -8.05 0.0289
2024-11-15 2024-09-30 13F OCCIDENTAL PETE COM 674599105 202,386 9,493 4.92 10,431 -14.21 0.0322
2024-08-14 2024-06-30 13F OCCIDENTAL PETE COM 674599105 192,893 11,186 6.16 12,158 2.96 0.0414
2024-05-13 2024-03-31 13F OCCIDENTAL PETE COM 674599105 181,707 5,253 2.98 11,809 12.08 0.0429
2024-02-09 2023-12-31 13F OCCIDENTAL PETE COM 674599105 176,454 3,448 1.99 10,536 -6.13 0.0435
2023-11-03 2023-09-30 13F OCCIDENTAL PETE COM 674599105 173,006 -15,357 -8.15 11,225 1.35 0.0526
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 188,363 -4,564 -2.37 11,076 -8.05 0.0510
2025-01-10 2023-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 192,927 -44,597 -18.78 12,044 -19.50 0.0633
2023-05-11 2023-03-31 13F OCCIDENTAL PETE COM 674599105 192,927 -44,597 12,044 0.0633
2025-01-10 2022-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 237,524 10,385 4.57 14,962 7.19 0.0869
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 237,524 10,385 14,962 0.0869
2025-01-10 2022-09-30 13F/A-3 OCCIDENTAL PETE COM 674599105 227,139 8,996 4.12 13,958 8.67 0.0889
2022-11-14 2022-09-30 13F/A-2 OCCIDENTAL PETE COM 674599105 227,139 8,996 13,958 0.0889
2022-11-10 2022-09-30 13F/A-1 OCCIDENTAL PETE COM 674599105 227,139 8,996 13,958 0.0889
2022-11-10 2022-09-30 13F OCCIDENTAL PETE COM 674599105 227,139 8,996 13,958 0.0562
2025-01-10 2022-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 218,143 7,155 3.39 12,844 7.29 0.0802
2022-08-12 2022-06-30 13F OCCIDENTAL PETE COM 674599105 218,143 7,155 12,844 0.0792
2025-01-10 2022-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 210,988 2,088 1.00 11,971 97.67 0.0651
2022-05-13 2022-03-31 13F OCCIDENTAL PETE COM 674599105 210,988 2,088 11,971 0.0651
2025-01-10 2021-12-31 13F/A-2 OCCIDENTAL PETE COM 674599105 208,900 4,563 2.23 6,056 0.20 0.0306
2022-02-01 2021-12-31 13F OCCIDENTAL PETE COM 674599105 208,900 4,563 6,056 0.0306
2025-01-10 2021-09-30 13F/A-2 OCCIDENTAL PETE COM 674599105 204,337 8,326 4.25 6,044 -1.39 0.0341
2021-11-12 2021-09-30 13F OCCIDENTAL PETE COM 674599105 204,337 8,326 6,044 0.0341
2025-01-10 2021-06-30 13F/A-2 OCCIDENTAL PETE COM 674599105 196,011 5,387 2.83 6,129 20.79 0.0355
2021-08-06 2021-06-30 13F OCCIDENTAL PETE COM 674599105 196,011 5,387 6,129 0.0355
2025-01-10 2021-03-31 13F/A-2 OCCIDENTAL PETE COM 674599105 190,624 16,434 9.43 5,074 68.29 0.0323
2021-05-14 2021-03-31 13F OCCIDENTAL PETE COM 674599105 190,624 16,434 5,074 0.0323
2025-01-10 2020-12-31 13F/A-2 OCCIDENTAL PETE COM 674599105 174,190 1,611 0.93 3,015 74.48 0.0203
2021-02-12 2020-12-31 13F OCCIDENTAL PETE COM 674599105 174,190 1,611 3,015 0.0203
2020-11-12 2020-09-30 13F OCCIDENTAL PETE COM 674599105 172,579 131 0.08 1,728 -45.23 0.0133
2020-08-13 2020-06-30 13F OCCIDENTAL PETE COM 674599105 172,448 -4,956 -2.79 3,155 53.60 0.0267
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM 674599105 177,404 10,083 6.03 2,054 -70.21 0.0212
2020-02-13 2019-12-31 13F OCCIDENTAL PETE COM 674599105 167,321 4,423 2.72 6,895 -4.82 0.0618
2019-11-13 2019-09-30 13F OCCIDENTAL PETE COM 674599105 162,898 35,525 27.89 7,244 13.12 0.0692
2019-08-13 2019-06-30 13F OCCIDENTAL PETE COM 674599105 127,373 -3,694 -2.82 6,404 -26.20 0.0633
2019-05-10 2019-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 131,067 -2,966 -2.21 8,677 5.47 0.0853
2019-05-10 2019-03-31 13F OCCIDENTAL PETE COM 674599105 131,067 -2,966 8,677
2019-02-12 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 134,033 8,386 6.67 8,227 -20.31 0.0919
2018-11-07 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 125,647 2,712 2.21 10,324 0.36 0.1002
2018-08-03 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 122,935 3,483 2.92 10,287 32.58 0.1068
2018-05-14 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 119,452 5,257 4.60 7,759 -7.76 0.0847
2018-02-14 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 114,195 4,621 4.22 8,412 19.56 0.0974
2017-11-13 2017-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 109,574 5,349 5.13 7,036 12.76 0.0909
2017-08-14 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 104,225 1,398 1.36 6,240 -4.24 0.0839
2017-06-28 2017-03-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 102,827 1,946 1.93 6,516 -9.39 0.0918
2017-05-12 2017-03-31 13F OCCIDENTAL PETROLEUM COM 674599105 102,827 6,516
2017-02-14 2016-12-31 13F OCCIDENTAL PETROLEUM COM 674599105 100,881 -4,810 -4.55 7,191 -6.70 0.1295
2016-11-10 2016-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 105,691 860 0.82 7,707 -2.70 0.1383
2016-08-12 2016-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 104,831 -340 -0.32 7,921 10.06 0.1482
2016-05-13 2016-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 105,171 1,430 1.38 7,197 2.61 0.1371
2016-02-12 2015-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 103,741 -524 -0.50 7,014 1.70 0.1357
2015-11-13 2015-09-30 13F OCCIDENTAL PETROLEUM COM 674599105 104,265 2,307 2.26 6,897 -13.02 0.1382
2015-08-14 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 101,958 -1,590 -1.54 7,929 4.89 0.1467
2015-05-13 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 103,548 4,590 4.64 7,559 -5.95 0.1347
2015-02-13 2014-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 98,958 -3,660 -3.57 8,037 -18.17 0.1404
2014-11-14 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 102,618 -590 -0.57 9,821 -7.21 0.1736
2014-08-14 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 103,208 -3,190 -3.00 10,584 4.46 0.1956
2014-05-14 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 106,398 -4,550 -4.10 10,132 -3.97 0.1853
2014-02-14 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 110,948 -3,582 -3.13 10,551 -1.51 0.1896
2013-11-13 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 114,530 -48,042 -29.55 10,713 -26.15 0.2029
2013-08-13 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 162,572 162,572 14,506 0.2874
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.