Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionVontobel Holding Ltd.
Latest Disclosed Ownership142,814 shares
Latest Disclosed Value $ 9,282,910
Vontobel Holding Ltd. ownership in OXY / Occidental Petroleum Corporation

On May 8, 2026 - Vontobel Holding Ltd. filed a 13F-HR form disclosing ownership of 142,814 shares of Occidental Petroleum Corporation (CH:OXY) valued at $9,282,910 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 70,888 shares of Occidental Petroleum Corporation. This represents a change in shares of 101.46% during the quarter.

Vontobel Holding Ltd. 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 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.

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)
2026-05-08 2026-03-31 13F OCCIDENTAL PETE COM 674599105 142,814 71,926 101.46 9,283 218.53 0.0319
2026-02-13 2025-12-31 13F OCCIDENTAL PETE COM 674599105 70,888 -18,913 -21.06 2,915 -31.32 0.0092
2025-10-15 2025-09-30 13F OCCIDENTAL PETE COM 674599105 89,801 10,075 12.64 4,243 26.69 0.0128
2025-07-23 2025-06-30 13F OCCIDENTAL PETE COM 674599105 79,726 13,305 20.03 3,349 2.17 0.0107
2025-04-28 2025-03-31 13F OCCIDENTAL PETE COM 674599105 66,421 11,210 20.30 3,279 20.21 0.0120
2025-01-30 2024-12-31 13F OCCIDENTAL PETE COM 674599105 55,211 -23,591 -29.94 2,728 -32.85 0.0093
2024-10-16 2024-09-30 13F OCCIDENTAL PETE COM 674599105 78,802 62,716 389.88 4,061 300.89 0.0131
2024-08-13 2024-06-30 13F OCCIDENTAL PETE COM 674599105 16,086 -17,674 -52.35 1,014 -53.83 0.0033
2024-05-10 2024-03-31 13F OCCIDENTAL PETE COM 674599105 33,760 6,494 23.82 2,194 34.77 0.0175
2024-06-04 2023-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 27,266 161 0.59 1,628 -7.39 0.0136
2024-01-30 2023-12-31 13F OCCIDENTAL PETE COM 674599105 27,266 161 1,628 0.0082
2024-06-04 2023-09-30 13F/A-1 OCCIDENTAL PETE COM 674599105 27,105 10,757 65.80 1,759 82.93 0.0162
2023-10-11 2023-09-30 13F OCCIDENTAL PETE COM 674599105 27,105 10,757 1,759 0.0098
2024-06-04 2023-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 16,348 280 1.74 961 -4.19 0.0084
2023-07-24 2023-06-30 13F OCCIDENTAL PETE COM 674599105 16,348 280 961 0.0051
2024-06-04 2023-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 16,068 9,131 131.63 1,003 130.05 0.0093
2023-04-12 2023-03-31 13F OCCIDENTAL PETE COM 674599105 16,068 9,131 1,003 0.0057
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 6,937 -5,356 -43.57 437 -42.25 0.0044
2022-11-04 2022-09-30 13F OCCIDENTAL PETE COM 674599105 12,293 2,175 21.50 755 26.25 0.0088
2022-07-27 2022-06-30 13F OCCIDENTAL PETE COM 674599105 10,118 5,911 140.50 598 147.11 0.0065
2022-05-13 2022-03-31 13F OCCIDENTAL PETE COM 674599105 4,207 -27,279 -86.64 242 -73.49 0.0021
2022-02-14 2021-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 31,486 16,447 109.36 913 105.17 0.0076
2022-02-10 2021-12-31 13F OCCIDENTAL PETE COM 674599105 15,039 0 445 0.0017
2021-10-29 2021-09-30 13F OCCIDENTAL PETE COM 674599105 15,039 -11,400 -43.12 445 -46.26 0.0039
2021-08-06 2021-06-30 13F OCCIDENTAL PETE COM 674599105 26,439 16,019 153.73 828 198.92 0.0072
2021-05-11 2021-03-31 13F OCCIDENTAL PETE COM 674599105 10,420 -2,239 -17.69 277 -13.98 0.0021
2021-02-12 2020-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 12,659 12,659 322 0.0021
2021-02-12 2020-12-31 13F OCCIDENTAL PETE COM 674599105 12,659 322 0.0021
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
(%)
2026-05-08 2026-03-31 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-13 2025-12-31 13F OCCIDENTAL PETE COM Call 1,100 0.00 45 -11.76 n/a n/a n/a
2025-10-15 2025-09-30 13F OCCIDENTAL PETE COM Call 1,100 22.22 52 37.84 n/a n/a n/a
2025-07-23 2025-06-30 13F OCCIDENTAL PETE COM Call 900 38 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.