西方石油公司
MX ˙ BMV ˙ US6745991058
SecurityMX:OXY1 / Occidental Petroleum Corporation
InstitutionJefferies Financial Group Inc.
Latest Disclosed Ownership1,235 shares
Latest Disclosed Value $ 80,275
Jefferies Financial Group Inc. ownership in OXY1 / Occidental Petroleum Corporation

On May 7, 2026 - Jefferies Financial Group Inc. filed a 13F-HR form disclosing ownership of 1,235 shares of Occidental Petroleum Corporation (MX:OXY1) valued at $80,275 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 83,038 shares of Occidental Petroleum Corporation. This represents a change in shares of -98.51% during the quarter.

Jefferies Financial Group Inc. 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 20,000 of underlying shares valued at $1,300,000 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)
2026-05-07 2026-03-31 13F OCCIDENTAL PETE COM 674599105 1,235 -81,803 -98.51 80 -97.66 0.0005
2026-02-09 2025-12-31 13F OCCIDENTAL PETE COM 674599105 83,038 78,482 1,722.61 3,415 1,487.91 0.0174
2025-11-13 2025-09-30 13F OCCIDENTAL PETE COM 674599105 4,556 -3,546 -43.77 215 -36.76 0.0010
2025-08-12 2025-06-30 13F OCCIDENTAL PETE COM 674599105 8,102 -14,715 -64.49 340 -69.80 0.0029
2025-05-08 2025-03-31 13F OCCIDENTAL PETE COM 674599105 22,817 22,817 1,126 0.0099
2025-02-27 2024-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 0 -38,862 -100.00 0 -100.00
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 0 0
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 38,862 -54,838 -58.53 2,003 -66.10 0.0143
2024-08-13 2024-06-30 13F OCCIDENTAL PETE COM 674599105 93,700 45,600 94.80 5,906 88.90 0.0627
2024-05-13 2024-03-31 13F OCCIDENTAL PETE COM 674599105 48,100 9,399 24.29 3,126 35.32 0.0289
2024-05-06 2023-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 38,701 -89,465 -69.80 2,311 -72.22 0.0151
2024-02-14 2023-12-31 13F OCCIDENTAL PETE COM 674599105 38,701 -89,465 2,311 0.0151
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 128,166 24,396 23.51 8,315 36.29 0.0748
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 103,770 -259,704 -71.45 6,102 -73.11 0.0546
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM 674599105 363,474 -20,034 -5.22 22,692 -6.07 0.1835
2023-09-21 2022-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 383,508 383,508 24,157 0.1674
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 395,101 395,101 24,161 0.1667
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
(%)
2026-05-07 2026-03-31 13F OCCIDENTAL PETE COM Call 20,000 0.00 1,300 58.15 n/a n/a n/a
2026-02-09 2025-12-31 13F OCCIDENTAL PETE COM Call 20,000 -2.44 822 -15.08 n/a n/a n/a
2025-11-13 2025-09-30 13F OCCIDENTAL PETE COM Call 20,500 969 n/a n/a n/a
2024-05-13 2024-03-31 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-06 2023-12-31 13F/A OCCIDENTAL PETE COM Call 60,000 0.00 3,583 -7.97 n/a n/a n/a
2024-02-14 2023-12-31 13F OCCIDENTAL PETE COM Call 60,000 3,583 n/a n/a n/a
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM Call 60,000 3,893 n/a n/a n/a
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM Call 187,500 -25.00 11,706 -25.67 n/a n/a n/a
2023-09-21 2022-12-31 13F/A OCCIDENTAL PETE COM Call 250,000 15,748 n/a n/a n/a
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM Call 250,000 15,748 n/a n/a n/a
2020-02-13 2019-12-31 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-13 2019-09-30 13F OCCIDENTAL PETE COM Call 1,150 5,114 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
(%)
2026-05-07 2026-03-31 13F OCCIDENTAL PETE COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-09 2025-12-31 13F OCCIDENTAL PETE COM Put 180,000 7,402 n/a n/a n/a
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-09-21 2022-12-31 13F/A OCCIDENTAL PETE COM Put 175,000 11,023 n/a n/a n/a
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM Put 175,000 11,023 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.