Occidental Petroleum Corporation
MX ˙ BMV ˙ US6745991058
SecurityMX:OXY1 / Occidental Petroleum Corporation
InstitutionHighTower Advisors, LLC
Latest Disclosed Ownership678,801 shares
Latest Disclosed Value $ 44,121,974
HighTower Advisors, LLC ownership in OXY1 / Occidental Petroleum Corporation

On May 5, 2026 - HighTower Advisors, LLC filed a 13F-HR form disclosing ownership of 678,801 shares of Occidental Petroleum Corporation (MX:OXY1) valued at $44,121,974 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 384,828 shares of Occidental Petroleum Corporation. This represents a change in shares of 76.39% during the quarter.

HighTower Advisors, LLC has a history of taking positions in derivatives of the underlying security (OXY1) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 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.

MX:OXY1 / 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)
2026-05-05 2026-03-31 13F OCCIDENTAL PETE COM 674599105 678,801 293,973 76.39 44,122 178.82 0.0468
2026-02-06 2025-12-31 13F OCCIDENTAL PETE COM 674599105 384,828 -2,189,513 -85.05 15,824 -86.99 0.0173
2025-11-07 2025-09-30 13F OCCIDENTAL PETE COM 674599105 2,574,341 16,056 0.63 121,637 13.18 0.1381
2025-08-11 2025-06-30 13F OCCIDENTAL PETE COM 674599105 2,558,285 85,420 3.45 107,474 -11.95 0.1346
2025-05-13 2025-03-31 13F OCCIDENTAL PETE COM 674599105 2,472,865 620,997 33.53 122,061 33.40 0.1656
2025-02-07 2024-12-31 13F OCCIDENTAL PETE COM 674599105 1,851,868 -28,666 -1.52 91,501 -5.75 0.1251
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 1,880,534 -11,990 -0.63 97,084 -18.64 0.1387
2024-08-13 2024-06-30 13F OCCIDENTAL PETE COM 674599105 1,892,524 36,949 1.99 119,322 -1.09 0.1845
2024-05-06 2024-03-31 13F OCCIDENTAL PETE COM 674599105 1,855,575 377,021 25.50 120,631 37.05 0.1954
2024-02-12 2023-12-31 13F OCCIDENTAL PETE COM 674599105 1,478,554 24,241 1.67 88,021 -6.81 0.1477
2023-11-08 2023-09-30 13F OCCIDENTAL PETE COM 674599105 1,454,313 18,556 1.29 94,458 12.04 0.1775
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 1,435,757 174,012 13.79 84,308 7.15 0.1660
2023-05-12 2023-03-31 13F OCCIDENTAL PETE COM 674599105 1,261,745 968,706 330.57 78,684 326.13 0.1717
2023-02-09 2022-12-31 13F OCCIDENTAL PETE COM 674599105 293,039 46,214 18.72 18,465 21.91 0.0422
2022-11-09 2022-09-30 13F OCCIDENTAL PETE COM 674599105 246,825 29,584 13.62 15,147 18.33 0.0406
2022-08-10 2022-06-30 13F OCCIDENTAL PETE COM 674599105 217,241 28,495 15.10 12,801 19.61 0.0331
2022-05-12 2022-03-31 13F OCCIDENTAL PETE COM 674599105 188,746 73,343 63.55 10,702 220.04 0.0239
2022-02-10 2021-12-31 13F OCCIDENTAL PETE COM 674599105 115,403 -10,213 -8.13 3,344 -10.08 0.0073
2021-11-12 2021-09-30 13F OCCIDENTAL PETE COM 674599105 125,616 3,156 2.58 3,719 -2.87 0.0100
2021-08-06 2021-06-30 13F OCCIDENTAL PETE COM 674599105 122,460 23,048 23.18 3,829 44.98 0.0111
2021-05-10 2021-03-31 13F OCCIDENTAL PETE COM 674599105 99,412 10,059 11.26 2,641 70.72 0.0083
2021-02-10 2020-12-31 13F OCCIDENTAL PETE COM 674599105 89,353 28,288 46.32 1,547 152.78 0.0064
2020-11-13 2020-09-30 13F OCCIDENTAL PETE COM 674599105 61,065 934 1.55 612 -44.31 0.0030
2020-08-10 2020-06-30 13F OCCIDENTAL PETE COM 674599105 60,131 -27,526 -31.40 1,099 8.81 0.0060
2020-05-21 2020-03-31 13F OCCIDENTAL PETE COM 674599105 87,657 -64,502 -42.39 1,010 -83.87 0.0065
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM 674599105 152,159 50,875 50.23 6,261 39.04 0.0370
2019-11-12 2019-09-30 13F OCCIDENTAL PETE COM 674599105 101,284 59,791 144.10 4,503 114.43 0.0245
2019-08-13 2019-06-30 13F OCCIDENTAL PETE COM 674599105 41,493 -13,216 -24.16 2,100 -42.15 0.0125
2019-05-15 2019-03-31 13F OCCIDENTAL PETE COM 674599105 54,709 -33,940 -38.29 3,630 -33.21 0.0242
2019-02-14 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 88,649 26,730 43.17 5,435 6.95 0.0417
2018-11-09 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 61,919 -43 -0.07 5,082 -1.99 0.0366
2018-08-14 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 61,962 -1,864 -2.92 5,185 25.48 0.0406
2018-05-15 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 63,826 -3,033 -4.54 4,132 -16.05 0.0346
2018-02-14 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 66,859 -11,199 -14.35 4,922 -1.52 0.0404
2017-11-14 2017-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 78,058 -4,421 -5.36 4,998 1.11 0.0426
2017-09-22 2017-06-30 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 82,479 7,069 9.37 4,943 3.45 0.0442
2017-08-14 2017-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 82,479 7,069 4,943
2017-05-15 2017-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 75,410 -3,790 -4.79 4,778 -15.10 0.0457
2017-02-10 2016-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 79,200 -2,754 -3.36 5,628 -6.03 0.0611
2016-11-14 2016-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 81,954 3,813 4.88 5,989 1.42 0.0694
2016-08-11 2016-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 78,141 -16,279 -17.24 5,905 -8.69 0.0747
2016-05-16 2016-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 94,420 -18,694 -16.53 6,467 -15.54 0.0211
2016-05-18 2015-12-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 113,114 -37,144 -24.72 7,657 -22.88 0.0909
2016-02-12 2015-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 113,114 7,657
2015-11-16 2015-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 150,258 5,104 3.52 9,929 -12.59 0.1314
2015-08-11 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 145,154 -17,836 -10.94 11,359 -4.18 0.1820
2015-05-15 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 162,990 4,412 2.78 11,855 -7.26 0.1764
2015-02-17 2014-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 158,578 -83,142 -34.40 12,783 -45.00 0.1957
2014-11-14 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 241,720 9,921 4.28 23,241 -2.36 0.3927
2014-08-13 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 231,799 20,143 9.52 23,802 18.01 0.4129
2014-05-15 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 211,656 9,735 4.82 20,169 5.04 0.3936
2014-02-14 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 201,921 15,182 8.13 19,202 9.93 0.3947
2013-11-15 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 186,739 37,361 25.01 17,468 31.19 0.4373
2013-08-14 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 149,378 149,378 13,315 0.3622
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
(%)
2025-05-13 2025-03-31 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-07 2024-12-31 13F OCCIDENTAL PETE COM Call 52,000 2,500.00 105 3,366.67 n/a n/a n/a
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM Call 2,000 -95.00 4 -96.30 n/a n/a n/a
2024-08-13 2024-06-30 13F OCCIDENTAL PETE COM Call 40,000 39,900.00 81 8,000.00 n/a n/a n/a
2024-05-06 2024-03-31 13F OCCIDENTAL PETE COM Call 100 1 n/a n/a n/a
2022-11-09 2022-09-30 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-10 2022-06-30 13F OCCIDENTAL PETE COM Call 10,000 21 n/a n/a n/a
2021-05-10 2021-03-31 13F OCCIDENTAL PETE COM Call 0 -100.00 0 n/a n/a n/a
2021-02-10 2020-12-31 13F OCCIDENTAL PETE COM Call 1 -99.99 0 -100.00 n/a n/a n/a
2020-11-13 2020-09-30 13F OCCIDENTAL PETE COM Call 18,000 15 n/a n/a n/a
2020-08-10 2020-06-30 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-21 2020-03-31 13F OCCIDENTAL PETE COM Call 900 1 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
(%)
2026-02-06 2025-12-31 13F OCCIDENTAL PETE COM Put 0 -100.00 0 n/a n/a n/a
2025-11-07 2025-09-30 13F OCCIDENTAL PETE COM Put 100 0 n/a n/a n/a
2025-05-13 2025-03-31 13F OCCIDENTAL PETE COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-07 2024-12-31 13F OCCIDENTAL PETE COM Put 30,000 50.00 86 16.44 n/a n/a n/a
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM Put 20,000 73 n/a n/a n/a
2024-05-06 2024-03-31 13F OCCIDENTAL PETE COM Put 0 -100.00 0 n/a n/a n/a
2024-02-12 2023-12-31 13F OCCIDENTAL PETE COM Put 500 1 n/a n/a n/a
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-12 2023-03-31 13F OCCIDENTAL PETE COM Put 4,000 7,900.00 10 -56.52 n/a n/a n/a
2023-02-09 2022-12-31 13F OCCIDENTAL PETE COM Put 50 -61.54 23 -77.88 n/a n/a n/a
2022-11-09 2022-09-30 13F OCCIDENTAL PETE COM Put 130 -93.50 104 1,385.71 n/a n/a n/a
2022-08-10 2022-06-30 13F OCCIDENTAL PETE COM Put 2,000 19,900.00 7 n/a n/a n/a
2022-05-12 2022-03-31 13F OCCIDENTAL PETE COM Put 10 0 n/a n/a n/a
2019-11-12 2019-09-30 13F OCCIDENTAL PETE COM Put 0 -100.00 0 n/a n/a n/a
2019-08-13 2019-06-30 13F OCCIDENTAL PETE COM Put 200 0 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.