Occidental Petroleum Corporation
CH ˙ BRSE ˙ US6745991058
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:OPC / Occidental Petroleum Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership323,502 shares
Latest Disclosed Value $ 21,034,631
Advisor Group Holdings, Inc. ownership in OPC / Occidental Petroleum Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 323,502 shares of Occidental Petroleum Corporation (CH:OPC) valued at $21,034,631 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 307,995 shares of Occidental Petroleum Corporation. This represents a change in shares of 5.03% during the quarter.

Advisor Group Holdings, Inc. has a history of taking positions in derivatives of the underlying security (OPC) in the form of stock options. The firm currently holds call options representing 623 of underlying shares valued at $96,640 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.

CH:OPC / 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 323,502 15,507 5.03 21,035 66.01 0.0179
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM 674599105 307,995 -15,502 -4.79 12,670 -17.82 0.0185
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM 674599105 323,497 -13,975 -4.14 15,418 7.74 0.0216
2025-09-04 2025-06-30 13F/A-1 CCIDENTAL PETE COM 674599105 337,472 134,079 65.92 14,311 42.47 0.0255
2025-08-13 2025-06-30 13F CCIDENTAL PETE COM 674599105 197,805 -5,588 9,602 0.0111
2025-05-12 2025-03-31 13F OCCIDENTAL PETE COM 674599105 203,393 16,000 8.54 10,045 10.12 0.0224
2025-06-06 2024-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 187,393 -12,599 -6.30 9,121 -11.54 0.0205
2025-02-07 2024-12-31 13F OCCIDENTAL PETE COM 674599105 167,359 -32,633 8,426 0.0215
2024-11-13 2024-09-30 13F OCCIDENTAL PETE COM 674599105 199,992 -21,941 -9.89 10,312 -26.31 0.0233
2024-08-13 2024-06-30 13F OCCIDENTAL PETE COM 674599105 221,933 -26,653 -10.72 13,993 -13.40 0.0331
2024-05-10 2024-03-31 13F OCCIDENTAL PETE COM 674599105 248,586 -43,975 -15.03 16,160 -7.51 0.0361
2024-02-12 2023-12-31 13F OCCIDENTAL PETE COM 674599105 292,561 -27,818 -8.68 17,471 -15.96 0.0306
2023-11-13 2023-09-30 13F OCCIDENTAL PETE COM 674599105 320,379 54,472 20.49 20,790 32.97 0.0307
2023-08-21 2023-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 265,907 28,601 12.05 15,635 5.12 0.0281
2023-08-10 2023-06-30 13F OCCIDENTAL PETE COM 674599105 347,405 110,099 15,553 0.0042
2023-05-12 2023-03-31 13F OCCIDENTAL PETE COM 674599105 237,306 7,412 3.22 14,872 2.70 0.0280
2023-02-10 2022-12-31 13F OCCIDENTAL PETE COM 674599105 229,894 -103,744 -31.09 14,481 -29.37 0.0293
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 333,638 -23,046 -6.46 20,503 -2.58 0.0469
2022-08-10 2022-06-30 13F OCCIDENTAL PETE COM 674599105 356,684 53,508 17.65 21,046 27.75 0.0464
2022-05-04 2022-03-31 13F OCCIDENTAL PETE COM 674599105 303,176 124,714 69.88 16,475 217.38 0.0320
2022-02-03 2021-12-31 13F OCCIDENTAL PETE COM 674599105 178,462 -16,869 -8.64 5,191 -10.48 0.0098
2021-11-05 2021-09-30 13F OCCIDENTAL PETE COM 674599105 195,331 8,984 4.82 5,799 -0.60 0.0121
2021-08-02 2021-06-30 13F OCCIDENTAL PETE COM 674599105 186,347 -22,529 -10.79 5,834 4.89 0.0126
2021-05-13 2021-03-31 13F OCCIDENTAL PETE COM 674599105 208,876 -1,701 -0.81 5,562 52.59 0.0134
2021-02-10 2020-12-31 13F OCCIDENTAL PETE COM 674599105 210,577 -36,300 -14.70 3,645 44.24 0.0097
2020-11-12 2020-09-30 13F OCCIDENTAL PETE COM 674599105 246,877 -5,183 -2.06 2,527 -45.20 0.0076
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM 674599105 252,060 14,082 5.92 4,611 67.67 0.0155
2020-05-18 2020-03-31 13F OCCIDENTAL PETE COM 674599105 237,978 237,978 2,750 0.0113
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 CALL Call 623 3,361.11 97 860.00 n/a n/a n/a
2026-02-17 2025-12-31 13F OCCIDENTAL PETE CALL Call 18 -53.85 11 -60.00 n/a n/a n/a
2025-11-14 2025-09-30 13F OCCIDENTAL PETE CALL Call 39 -4.88 26 38.89 n/a n/a n/a
2025-09-04 2025-06-30 13F/A OCCIDENTAL PETE CALL Call 41 1,950.00 19 1,700.00 n/a n/a n/a
2025-05-12 2025-03-31 13F OCCIDENTAL PETE CALL Call 2 1 n/a n/a n/a
2024-05-10 2024-03-31 13F OCCIDENTAL PETE CORP CALL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F OCCIDENTAL PETE CORP CALL COM Call 5 0.00 10 -25.00 n/a n/a n/a
2023-11-13 2023-09-30 13F OCCIDENTAL PETE CORP CALL COM Call 5 0.00 13 20.00 n/a n/a n/a
2023-08-21 2023-06-30 13F/A OCCIDENTAL PETE CORP CALL COM Call 5 0.00 10 -16.67 n/a n/a n/a
2023-08-10 2023-06-30 13F OCCIDENTAL PETE CORP CALL COM Call 5 10 n/a n/a n/a
2023-05-12 2023-03-31 13F OCCIDENTAL PETE CORP CALL COM Call 5 0.00 12 -7.69 n/a n/a n/a
2023-02-10 2022-12-31 13F OCCIDENTAL PETE CORP CALL COM Call 5 0.00 13 0.00 n/a n/a n/a
2022-11-14 2022-09-30 13F OCCIDENTAL PETE CORP CALL COM Call 5 -50.00 13 -7.14 n/a n/a n/a
2022-08-10 2022-06-30 13F OCCIDENTAL PETE CORP CALL COM Call 10 -33.33 14 180.00 n/a n/a n/a
2022-05-04 2022-03-31 13F OCCIDENTAL PETE CORP CALL COM Call 15 5 n/a n/a n/a
2021-05-13 2021-03-31 13F OCCIDENTAL PETE CORP CALL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-10 2020-12-31 13F OCCIDENTAL PETE CORP CALL COM Call 15 -25.00 4 n/a n/a n/a
2020-11-12 2020-09-30 13F OCCIDENTAL PETE CORP CALL COM Call 20 0.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F OCCIDENTAL PETE CORP CALL COM Call 20 11 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
(%)
2021-08-02 2021-06-30 13F OCCIDENTAL PETE CORP PUT COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-13 2021-03-31 13F OCCIDENTAL PETE CORP PUT COM Put 24 -31.43 4 0.00 n/a n/a n/a
2021-02-10 2020-12-31 13F OCCIDENTAL PETE CORP PUT COM Put 35 4 n/a n/a n/a
2020-11-12 2020-09-30 13F OCCIDENTAL PETE CORP PUT COM Put 0 -100.00 0 n/a n/a n/a
2020-08-14 2020-06-30 13F OCCIDENTAL PETE CORP PUT COM Put 40 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.