Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership1,967,819 shares
Latest Disclosed Value $ 127,908,235
Millennium Management Llc ownership in OXY / Occidental Petroleum Corporation

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 1,967,819 shares of Occidental Petroleum Corporation (CH:OXY) valued at $127,908,235 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,178,920 shares of Occidental Petroleum Corporation. This represents a change in shares of 66.92% during the quarter.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (OXY) in the form of stock options. The firm currently holds call options representing 567,200 of underlying shares valued at $36,868,000 USD and put options representing 696,700 of underlying shares valued at $45,285,500 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CH:OXY / Occidental Petroleum Corporation Historical Put/Call Ratio
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 1,967,819 788,899 66.92 127,908 163.85 0.0532
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM 674599105 1,178,920 868,378 279.63 48,477 230.38 0.0204
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM 674599105 310,542 179,757 137.44 14,673 167.07 0.0063
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM 674599105 130,785 -53,546 -29.05 5,494 -39.61 0.0027
2025-05-15 2025-03-31 13F OCCIDENTAL PETE COM 674599105 184,331 -1,986,881 -91.51 9,099 -91.52 0.0048
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 2,171,212 1,966,203 959.08 107,280 915.32 0.0524
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 205,009 -215,126 -51.20 10,566 -60.10 0.0050
2024-08-14 2024-06-30 13F OCCIDENTAL PETE COM 674599105 420,135 -823,772 -66.22 26,481 -67.24 0.0123
2024-05-15 2024-03-31 13F OCCIDENTAL PETE COM 674599105 1,243,907 355,014 39.94 80,842 52.31 0.0345
2024-02-14 2023-12-31 13F OCCIDENTAL PETE COM 674599105 888,893 150,276 20.35 53,076 10.76 0.0230
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 738,617 510,039 223.14 47,921 256.56 0.0242
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 228,578 -1,626,382 -87.68 13,440 -88.39 0.0066
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM 674599105 1,854,960 1,341,501 261.27 115,805 258.05 0.0664
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 513,459 -2,244,366 -81.38 32,343 -80.91 0.0179
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 2,757,825 1,970,580 250.31 169,468 265.60 0.1002
2022-08-15 2022-06-30 13F OCCIDENTAL PETE COM 674599105 787,245 -903,348 -53.43 46,353 -51.68 0.0288
2022-05-16 2022-03-31 13F OCCIDENTAL PETE COM 674599105 1,690,593 445,234 35.75 95,924 165.70 0.0509
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM 674599105 1,245,359 -857,239 -40.77 36,103 -41.95 0.0183
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM 674599105 2,102,598 1,152,731 121.36 62,195 109.40 0.0373
2021-08-16 2021-06-30 13F OCCIDENTAL PETE COM 674599105 949,867 -147,013 -13.40 29,702 1.72 0.0182
2021-05-17 2021-03-31 13F OCCIDENTAL PETE COM 674599105 1,096,880 775,290 241.08 29,199 424.50 0.0209
2021-02-16 2020-12-31 13F OCCIDENTAL PETE COM 674599105 321,590 -136,886 -29.86 5,567 21.31 0.0040
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM 674599105 458,476 162,101 54.69 4,589 -15.39 0.0057
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM 674599105 296,375 -2,620,747 -89.84 5,424 -83.94 0.0074
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM 674599105 2,917,122 1,917,913 191.94 33,780 -17.96 0.0759
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM 674599105 999,209 -275,288 -21.60 41,177 -27.35 0.0515
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM 674599105 1,274,497 920,182 259.71 56,676 218.14 0.0896
2019-08-15 2019-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 354,315 -762,386 -68.27 17,815 -75.90 0.0268
2019-08-14 2019-06-30 13F CHECK POINT SOFTWARE TECH LT ORD 674599105 143,573 -973,128 16,598
2019-05-14 2019-03-31 13F OCCIDENTAL PETE COM 674599105 1,116,701 -2,158,538 -65.90 73,926 -63.23 0.1106
2019-02-15 2018-12-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 3,275,239 2,621,463 400.97 201,034 274.22 0.3135
2019-02-14 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 3,275,239 201,034
2018-11-14 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 653,776 -1,132,650 -63.40 53,721 -64.06 0.0658
2018-08-14 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,786,426 -512,207 -22.28 149,488 0.11 0.1950
2018-05-15 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 2,298,633 309,602 15.57 149,319 1.92 0.1992
2018-02-14 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,989,031 1,920,249 2,791.79 146,512 3,217.75 0.2022
2017-11-14 2017-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 68,782 9,603 16.23 4,416 24.64 0.0067
2017-08-14 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 59,179 -2,338,638 -97.53 3,543 -97.93 0.0063
2017-02-14 2016-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 2,397,817 1,272,817 113.14 170,797 108.20 0.3577
2016-11-14 2016-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,125,000 1,125,000 0.00 82,035 0.1376
2016-08-15 2016-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -276,861 -100.00 0 -100.00
2016-05-16 2016-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 276,861 -3,302,352 -92.26 18,946 -92.17 0.0474
2016-02-16 2015-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 3,579,213 45,548 1.29 241,991 3.52 0.5087
2015-11-16 2015-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 3,533,665 150,790 4.46 233,752 -11.15 0.4526
2015-08-14 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 3,382,875 1,851,277 120.87 263,086 135.30 0.4976
2015-05-15 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,531,598 754,985 97.22 111,807 78.60 0.2080
2015-02-17 2014-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 776,613 -277,611 -26.33 62,603 -38.24 0.1326
2014-11-14 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,054,224 966,226 1,098.01 101,364 1,022.40 0.2564
2014-08-14 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 87,998 -425,448 -82.86 9,031 -81.54 0.0250
2014-05-15 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 513,446 -118,067 -18.70 48,926 -18.53 0.1418
2014-02-14 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 631,513 258,723 69.40 60,057 72.23 0.1895
2013-11-14 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 372,790 -404,503 -52.04 34,871 -49.72 0.1123
2013-08-14 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 777,293 777,293 69,358 0.2126
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F OCCIDENTAL PETE COM Call 567,200 4.15 36,868 64.64 n/a n/a n/a
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM Call 544,600 -17.43 22,394 -28.15 n/a n/a n/a
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM Call 659,600 -22.39 31,166 -12.71 n/a n/a n/a
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM Call 849,900 42.70 35,704 21.45 n/a n/a n/a
2025-05-15 2025-03-31 13F OCCIDENTAL PETE COM Call 595,600 60.76 29,399 60.59 n/a n/a n/a
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM Call 370,500 245.94 18,306 231.69 n/a n/a n/a
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM Call 107,100 -54.94 5,520 -63.16 n/a n/a n/a
2024-08-14 2024-06-30 13F OCCIDENTAL PETE COM Call 237,700 -31.54 14,982 -33.60 n/a n/a n/a
2024-05-15 2024-03-31 13F OCCIDENTAL PETE COM Call 347,200 -39.09 22,565 -33.70 n/a n/a n/a
2024-02-14 2023-12-31 13F OCCIDENTAL PETE COM Call 570,000 -14.91 34,035 -21.69 n/a n/a n/a
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM Call 669,900 -1.82 43,463 8.34 n/a n/a n/a
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM Call 682,300 -22.49 40,119 -27.00 n/a n/a n/a
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM Call 880,300 73.36 54,957 71.82 n/a n/a n/a
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM Call 507,800 22.24 31,986 25.31 n/a n/a n/a
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM Call 415,400 29.89 25,526 35.56 n/a n/a n/a
2022-08-15 2022-06-30 13F OCCIDENTAL PETE COM Call 319,800 6.60 18,830 10.62 n/a n/a n/a
2022-05-16 2022-03-31 13F OCCIDENTAL PETE COM Call 300,000 0.00 17,022 95.72 n/a n/a n/a
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM Call 300,000 0.00 8,697 -1.99 n/a n/a n/a
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM Call 300,000 8,874 n/a n/a n/a
2021-08-16 2021-06-30 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-17 2021-03-31 13F OCCIDENTAL PETE COM Call 39,100 1,041 n/a n/a n/a
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM Call 4,900 -65.73 202 -5.61 n/a n/a n/a
2019-08-14 2019-06-30 13F HEWLETT PACKARD ENTERPRISE C COM Call 14,300 214 n/a n/a n/a
2015-08-14 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-15 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM Call 159,600 -64.87 11,651 -34.82 n/a n/a n/a
2015-02-17 2014-12-31 13F OCCIDENTAL PETE CORP DEL COM Call 454,300 95.23 17,875 -20.11 n/a n/a n/a
2014-11-14 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM Call 232,700 22,374 n/a n/a n/a
2014-08-14 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM Call 8,200 -92.86 781 -92.85 n/a n/a n/a
2014-02-14 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM Call 114,900 -36.76 10,927 -35.71 n/a n/a n/a
2013-11-14 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM Call 181,700 127.12 16,996 138.11 n/a n/a n/a
2013-08-14 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM Call 80,000 7,138 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F OCCIDENTAL PETE COM Put 696,700 31.75 45,286 108.26 n/a n/a n/a
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM Put 528,800 -39.60 21,744 -47.44 n/a n/a n/a
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM Put 875,500 -3.60 41,367 8.42 n/a n/a n/a
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM Put 908,200 -13.36 38,153 -26.26 n/a n/a n/a
2025-05-15 2025-03-31 13F OCCIDENTAL PETE COM Put 1,048,200 -40.05 51,739 -40.11 n/a n/a n/a
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM Put 1,748,400 9.67 86,388 5.14 n/a n/a n/a
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM Put 1,594,200 -34.86 82,165 -46.74 n/a n/a n/a
2024-08-14 2024-06-30 13F OCCIDENTAL PETE COM Put 2,447,500 -28.59 154,266 -30.75 n/a n/a n/a
2024-05-15 2024-03-31 13F OCCIDENTAL PETE COM Put 3,427,500 -35.89 222,753 -30.23 n/a n/a n/a
2024-02-14 2023-12-31 13F OCCIDENTAL PETE COM Put 5,346,600 8.38 319,245 -0.25 n/a n/a n/a
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM Put 4,933,100 0.67 320,060 11.08 n/a n/a n/a
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM Put 4,900,200 -6.53 288,132 -11.96 n/a n/a n/a
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM Put 5,242,300 -2.20 327,277 -3.07 n/a n/a n/a
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM Put 5,360,100 43.02 337,633 46.60 n/a n/a n/a
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM Put 3,747,800 475.61 230,302 500.73 n/a n/a n/a
2022-08-15 2022-06-30 13F OCCIDENTAL PETE COM Put 651,100 85.45 38,337 92.45 n/a n/a n/a
2022-05-16 2022-03-31 13F OCCIDENTAL PETE COM Put 351,100 16.64 19,921 128.29 n/a n/a n/a
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM Put 301,000 0.33 8,726 -1.67 n/a n/a n/a
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM Put 300,000 1,521.62 8,874 1,435.29 n/a n/a n/a
2021-08-16 2021-06-30 13F OCCIDENTAL PETE COM Put 18,500 -97.29 578 -96.82 n/a n/a n/a
2021-05-17 2021-03-31 13F OCCIDENTAL PETE COM Put 683,200 192,894.35 18,187 46,533.33 n/a n/a n/a
2021-02-16 2020-12-31 13F OCCIDENTAL PETE COM Put 354 -96.55 39 -62.14 n/a n/a n/a
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM Put 10,266 0.00 103 -94.52 n/a n/a n/a
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM Put 10,266 0.00 1,879 1,478.99 n/a n/a n/a
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM Put 10,266 -91.54 119 -96.64 n/a n/a n/a
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM Put 121,300 -21.94 3,540 -33.66 n/a n/a n/a
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM Put 155,400 29.50 5,336 -11.57 n/a n/a n/a
2019-08-15 2019-06-30 13F/A OCCIDENTAL PETE COM Put 120,000 6,034 n/a n/a n/a
2014-08-14 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM Put 8,700 -91.29 829 -91.27 n/a n/a n/a
2014-02-14 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM Put 99,900 4,062.50 9,500 4,141.07 n/a n/a n/a
2013-11-14 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM Put 2,400 224 n/a n/a n/a
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.