Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionPrelude Capital Management, Llc
Latest Disclosed Ownership33,800 shares
Latest Disclosed Value $ 2,197,000
Prelude Capital Management, Llc ownership in OXY / Occidental Petroleum Corporation

On May 15, 2026 - Prelude Capital Management, Llc filed a 13F-HR form disclosing ownership of 33,800 shares of Occidental Petroleum Corporation (CH:OXY) valued at $2,197,000 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,800 shares of Occidental Petroleum Corporation. This represents a change in shares of 482.76% during the quarter.

Prelude Capital 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 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.

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 33,800 28,000 482.76 2,197 823.11 0.1680
2026-02-17 2025-12-31 13F OCCIDENTAL PETE COM 674599105 5,800 5,800 238 0.0175
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 0 -10,647 -100.00 0 -100.00
2024-11-14 2024-09-30 13F/A-1 OCCIDENTAL PETE COM 674599105 10,647 10,647 549 0.0332
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 10,647 10,647 549 0.0206
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 0 -8,265 -100.00 0 -100.00
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 8,265 -4,997 -37.68 486 -41.35 0.0316
2023-06-01 2023-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 13,262 13,262 828 0.0496
2023-05-15 2023-03-31 13F OCCIDENTAL PETE COM 674599105 13,262 13,262 828 0.0269
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 0 -12,763 -100.00 0 -100.00
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 12,763 12,763 784 0.0281
2022-08-24 2022-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 0 -31,428 -100.00 0 -100.00
2022-08-15 2022-06-30 13F OCCIDENTAL PETE COM 674599105 0 -31,428 0
2022-05-16 2022-03-31 13F OCCIDENTAL PETE COM 674599105 31,428 8,585 37.58 1,783 169.34 0.0512
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM 674599105 22,843 7,769 51.54 662 48.43 0.0170
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM 674599105 15,074 -26,911 -64.10 446 -66.03 0.0114
2021-08-16 2021-06-30 13F OCCIDENTAL PETE COM 674599105 41,985 11,523 37.83 1,313 61.90 0.0390
2021-05-17 2021-03-31 13F OCCIDENTAL PETE COM 674599105 30,462 30,462 811 0.0209
2021-02-16 2020-12-31 13F OCCIDENTAL PETE COM 674599105 0 -10,720 -100.00 0 -100.00
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM 674599105 10,720 -34,676 -76.39 107 -87.12 0.0052
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM 674599105 45,396 45,396 831 0.0458
2020-05-15 2020-03-31 13F OCCIDENTAL PETE COM 674599105 0 -137,858 -100.00 0 -100.00
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM 674599105 137,858 129,694 1,588.61 5,681 1,465.01 0.2160
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM 674599105 8,164 8,164 363 0.0164
2019-08-14 2019-06-30 13F OCCIDENTAL PETE COM 674599105 0 -6,805 -100.00 0 -100.00
2019-05-15 2019-03-31 13F OCCIDENTAL PETE COM 674599105 6,805 6,805 450 0.0254
2019-02-14 2018-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -3,505 -100.00 0 -100.00
2018-11-14 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 3,505 -14,879 -80.93 288 -81.27 0.0167
2018-08-14 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 18,384 18,384 1,538 0.0973
2015-08-14 2015-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -4,750 -100.00 0 -100.00
2015-05-15 2015-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 4,750 -11 -0.23 347 -9.64 0.0481
2015-02-13 2014-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 4,761 3,536 288.65 384 225.42 0.0563
2014-11-14 2014-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,225 0 0.00 118 -6.35 0.0166
2014-08-14 2014-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,225 -8,625 -87.56 126 -86.58 0.0167
2014-05-15 2014-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,850 849 9.43 939 9.70 0.1258
2014-02-14 2013-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 9,001 -1,000 -10.00 856 -8.45 0.1413
2013-11-14 2013-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 10,001 1,667 20.00 935 25.67 0.1510
2013-08-14 2013-06-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 8,334 8,334 744 0.1596
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
(%)
2022-05-16 2022-03-31 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM Call 8,500 246 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 53,800 -57.77 1,432 -35.06 n/a n/a n/a
2021-02-16 2020-12-31 13F OCCIDENTAL PETE COM Call 127,400 2,205 n/a n/a n/a
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM Call 8,600 514.29 157 881.25 n/a n/a n/a
2020-05-15 2020-03-31 13F OCCIDENTAL PETE COM Call 1,400 -62.16 16 -89.47 n/a n/a n/a
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM Call 3,700 -48.61 152 -52.50 n/a n/a n/a
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM Call 7,200 700.00 320 350.70 n/a n/a n/a
2013-05-22 2013-03-31 13F/A OCCIDENTAL PETE CORP DEL COM Call 900 71 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
(%)
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM Put 6,800 201 n/a n/a n/a
2020-11-16 2020-09-30 13F OCCIDENTAL PETE COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM Put 19,600 -61.19 359 -38.63 n/a n/a n/a
2020-05-15 2020-03-31 13F OCCIDENTAL PETE COM Put 50,500 -66.31 585 -90.53 n/a n/a n/a
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM Put 149,900 554.59 6,177 506.78 n/a n/a n/a
2019-11-14 2019-09-30 13F OCCIDENTAL PETE COM Put 22,900 54.73 1,018 36.83 n/a n/a n/a
2019-08-14 2019-06-30 13F OCCIDENTAL PETE COM Put 14,800 744 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.