옥시덴탈석유공사
MX ˙ BMV ˙ US6745991058
SecurityMX:OXY1 / Occidental Petroleum Corporation
InstitutionAncora Advisors, LLC
Latest Disclosed Ownership6,495 shares
Latest Disclosed Value $ 422,175
Ancora Advisors, LLC ownership in OXY1 / Occidental Petroleum Corporation

On May 15, 2026 - Ancora Advisors, LLC filed a 13F-HR form disclosing ownership of 6,495 shares of Occidental Petroleum Corporation (MX:OXY1) valued at $422,175 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,002 shares of Occidental Petroleum Corporation. This represents a change in shares of 224.43% during the quarter.

Ancora 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 10 of underlying shares valued at $18,300 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)
2026-05-15 2026-03-31 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 6,495 4,493 224.43 422 414.63 0.0090
2026-02-17 2025-12-31 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 2,002 367 22.45 82 6.49 0.0017
2025-11-14 2025-09-30 13F OCCIDENTAL PETE COM 674599105 1,635 -2,521 -60.66 77 -55.75 0.0015
2025-08-14 2025-06-30 13F OCCIDENTAL PETE COM 674599105 4,156 2,713 188.01 175 145.07 0.0036
2025-05-15 2025-03-31 13F OCCIDENTAL PETE COM 674599105 1,443 -29 -1.97 71 -1.39 0.0016
2025-02-14 2024-12-31 13F OCCIDENTAL PETE COM 674599105 1,472 -281 -16.03 73 -20.00 0.0016
2024-11-14 2024-09-30 13F OCCIDENTAL PETE COM 674599105 1,753 -539 -23.52 90 -37.50 0.0021
2024-08-14 2024-06-30 13F OCCIDENTAL PETE COM 674599105 2,292 122 5.62 144 2.13 0.0036
2024-05-16 2024-03-31 13F OCCIDENTAL PETE COM 674599105 2,170 -77 -3.43 141 5.22 0.0032
2024-02-14 2023-12-31 13F OCCIDENTAL PETE COM 674599105 2,247 -116 -4.91 134 -12.42 0.0032
2023-11-14 2023-09-30 13F OCCIDENTAL PETE COM 674599105 2,363 0 0.00 153 10.87 0.0041
2023-08-14 2023-06-30 13F OCCIDENTAL PETE COM 674599105 2,363 153 6.92 139 0.73 0.0037
2023-05-16 2023-03-31 13F OCCIDENTAL PETE COM 674599105 2,210 0 0.00 138 -1.44 0.0039
2023-02-14 2022-12-31 13F OCCIDENTAL PETE COM 674599105 2,210 240 12.18 139 14.88 0.0040
2022-11-14 2022-09-30 13F OCCIDENTAL PETE COM 674599105 1,970 -100 -4.83 121 -0.82 0.0037
2022-08-15 2022-06-30 13F OCCIDENTAL PETE COM 674599105 2,070 -50 -2.36 122 1.67 0.0034
2022-05-16 2022-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 2,120 214 11.23 120 118.18 0.0029
2022-05-13 2022-03-31 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 2,428 522 64 0.0011
2022-02-14 2021-12-31 13F OCCIDENTAL PETE COM 674599105 1,906 0 0.00 55 -3.51 0.0013
2021-11-15 2021-09-30 13F OCCIDENTAL PETE COM 674599105 1,906 -522 -21.50 57 -25.00 0.0015
2021-11-12 2021-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 2,428 0 0.00 76 18.75 0.0020
2021-08-13 2021-06-30 13F OCCIDENTAL PETE COM 674599105 2,428 0 76 0.0020
2021-11-12 2021-03-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM COM 674599105 2,428 919 60.90 64 146.15 0.0018
2021-05-14 2021-03-31 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 2,428 919 64 0.0018
2021-11-12 2020-12-31 13F/A-1 OCCIDENTAL PETE COM 674599105 1,509 400 36.07 26 136.36 0.0008
2021-02-12 2020-12-31 13F OCCIDENTAL PETE COM 674599105 1,509 400 26 0.0008
2021-11-12 2020-09-30 13F/A-1 OCCIDENTAL PETE COM 674599105 1,109 0 0.00 11 -45.00 0.0004
2020-11-13 2020-09-30 13F OCCIDENTAL PETE COM 674599105 1,109 0 11 0.0004
2021-11-12 2020-06-30 13F/A-1 OCCIDENTAL PETE COM 674599105 1,109 -1,046 -48.54 20 -20.00 0.0008
2020-08-14 2020-06-30 13F OCCIDENTAL PETE COM 674599105 1,109 -1,046 20 0.0008
2021-11-12 2020-03-31 13F/A-1 OCCIDENTAL PETE COM 674599105 2,155 92 4.46 25 -70.59 0.0012
2020-05-14 2020-03-31 13F OCCIDENTAL PETE COM 674599105 2,155 92 25 0.0012
2020-02-14 2019-12-31 13F OCCIDENTAL PETE COM 674599105 2,063 2,063 85 0.0032
2019-11-14 2018-12-31 13F/A-1 OCCIDENTAL PETE CORP DEL COM 674599105 0 -1,197 -100.00 0 -100.00
2018-11-13 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM 674599105 1,197 1,197 99 0.0038
2017-05-15 2017-03-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 0 -468 -100.00 0 -100.00
2017-02-14 2016-12-31 13F OCCIDENTAL PETE CORP DEL COM 674599105 468 468 34 0.0025
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 OXY 270115C00050000 CALL Call 10 18 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.