Occidental Petroleum Corporation
US ˙ NYSE ˙ US6745991058

SecurityOXY / Occidental Petroleum Corporation
InstitutionTufton Capital Management
Latest Disclosed Ownership11,137 shares
Latest Disclosed Value $ 723
Tufton Capital Management reports 0.73% decrease in ownership of OXY / Occidental Petroleum Corporation

On May 12, 2026 - Tufton Capital Management filed a 13F-HR form disclosing ownership of 11,137 shares of Occidental Petroleum Corporation (US:OXY) valued at $723,905 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 11,219 shares of Occidental Petroleum Corporation. The current value of the position is $634,029 USD.

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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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)
2026-05-12 2026-03-31 13F OCCIDENTAL PETE CORP COM COM 674599105 11,137 -82 -0.73 1 0.1315
2026-01-28 2025-12-31 13F OCCIDENTAL PETE CORP CAL COM 674599105 11,219 -12,876 -53.44 0 -100.00 0.0806
2025-10-31 2025-09-30 13F OCCIDENTAL PETE CORP CAL COM 674599105 24,095 -1,853 -7.14 1 0.00 0.2029
2025-08-05 2025-06-30 13F OCCIDENTAL PETE CORP CAL COM 674599105 25,948 -1,245 -4.58 1 -99.93 0.2072
2025-05-06 2025-03-31 13F OCCIDENTAL PETE CORP CAL COM 674599105 27,193 27,193 1,342 0.2585
2019-07-26 2019-06-30 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 0 -4,150 -100.00 0 -100.00
2019-04-29 2019-03-31 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 4,150 4,150 274 0.0584
2018-10-26 2018-09-30 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 0 -16,425 -100.00 0 -100.00
2018-08-06 2018-06-30 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 16,425 0 0.00 1,374 28.89 0.2946
2018-04-23 2018-03-31 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 16,425 7,600 86.12 1,066 64.00 0.2103
2018-01-26 2017-12-31 13F OCCIDENTAL PETE CORP DEL COM COM 674599105 8,825 8,825 650 0.1252
2015-07-23 2015-06-30 13F OCCIDENTAL PETE CP DEL COM COM 674599105 0 -3,640 -100.00 0 -100.00
2015-04-22 2015-03-31 13F OCCIDENTAL PETE CP DEL COM COM 674599105 3,640 3,640 266 0.0488
2015-02-02 2014-12-31 13F OCCIDENTAL PETE CP DEL COM COM 674599105 0 -3,700 -100.00 0 -100.00
2014-11-07 2014-09-30 13F OCCIDENTAL PETE CP DEL COM COM 674599105 3,700 0 0.00 356 -6.32 0.0669
2014-07-16 2014-06-30 13F OCCIDENTAL PETE CP DEL COM COM 674599105 3,700 5 0.14 380 7.95 0.0770
2014-04-22 2014-03-31 13F OCCIDENTAL PETE CP DEL COM COM 674599105 3,695 0 0.00 352 0.28 0.0736
2014-01-30 2013-12-31 13F OCCIDENTAL PETE CP DEL COM COM 674599105 3,695 0 0.00 351 1.45 0.0752
2013-10-30 2013-09-30 13F OCCIDENTAL PETE CP DEL COM COM 674599105 3,695 0 0.00 346 4.85 0.0815
2013-07-18 2013-06-30 13F OCCIDENTAL PETE CP DEL COM COM 674599105 3,695 3,695 330 0.0792
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.