Occidental Petroleum Corporation
CH ˙ SWX ˙ US6745991058
SecurityCH:OXY / Occidental Petroleum Corporation
InstitutionRockland Trust Co
Latest Disclosed Ownership3,699 shares
Latest Disclosed Value $ 240,435
Rockland Trust Co ownership in OXY / Occidental Petroleum Corporation

On April 16, 2026 - Rockland Trust Co filed a 13F-HR form disclosing ownership of 3,699 shares of Occidental Petroleum Corporation (CH:OXY) valued at $240,435 USD as of March 31, 2026. The entity filed a previous 13F-HR on October 3, 2024 disclosing 0 shares of Occidental Petroleum Corporation.

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)
2026-04-16 2026-03-31 13F OCCIDENTAL PETE COM 674599105 3,699 3,699 240 0.0090
2024-10-03 2024-09-30 13F Occidental Petroleum COM 674599105 0 -3,774 -100.00 0 -100.00
2024-07-23 2024-06-30 13F Occidental Petroleum COM 674599105 3,774 0 0.00 238 -3.27 0.0125
2024-04-11 2024-03-31 13F Occidental Petroleum COM 674599105 3,774 0 0.00 245 8.89 0.0129
2024-01-11 2023-12-31 13F Occidental Petroleum COM 674599105 3,774 0 0.00 225 -7.79 0.0123
2023-10-26 2023-09-30 13F Occidental Petroleum COM 674599105 3,774 0 0.00 245 10.41 0.0147
2023-07-27 2023-06-30 13F Occidental Petroleum COM 674599105 3,774 -110 -2.83 222 -8.68 0.0133
2023-04-24 2023-03-31 13F Occidental Petroleum COM 674599105 3,884 0 0.00 242 0.0152
2023-01-24 2022-12-31 13F Occidental Petroleum COM 674599105 3,884 3,884 0 0.0156
2019-01-16 2018-12-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 0 -3,577 -100.00 0 -100.00
2018-10-05 2018-09-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 3,577 205 6.08 294 4.26 0.0359
2018-07-06 2018-06-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 3,372 85 2.59 282 31.78 0.0364
2018-04-10 2018-03-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 3,287 -200 -5.74 214 -16.73 0.0283
2018-01-11 2017-12-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 3,487 -150 -4.12 257 9.83 0.0331
2017-11-01 2017-09-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 3,637 -737 -16.85 234 -10.69 0.0350
2017-08-01 2017-06-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 4,374 126 2.97 262 -2.60 0.0410
2017-04-20 2017-03-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 4,248 687 19.29 269 5.91 0.0425
2017-01-30 2016-12-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 3,561 -627 -14.97 254 -16.72 0.0407
2016-10-27 2016-09-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 4,188 -1,028 -19.71 305 -22.59 0.0528
2016-07-20 2016-06-30 13F/A-1 OCCIDENTAL PETE COMMON STOCK 674599105 5,216 -84,463 -94.18 394 -93.58 0.0682
2016-07-20 2016-06-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 89,679 6,137
2016-05-04 2016-03-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 89,679 9,763 12.22 6,137 13.59 1.1016
2016-01-28 2015-12-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 79,916 -2,392 -2.91 5,403 -0.77 0.9518
2015-10-28 2015-09-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 82,308 5,569 7.26 5,445 -8.76 1.0698
2015-07-22 2015-06-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 76,739 730 0.96 5,968 7.55 1.1848
2015-04-24 2015-03-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 76,009 76,009 0.00 5,549 1.1734
2015-02-04 2014-12-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 0 -66,841 -100.00 0 -100.00
2014-11-05 2014-09-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 66,841 1,855 2.85 6,427 -3.64 1.4151
2014-08-04 2014-06-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 64,986 -1,014 -1.54 6,670 6.06 1.5146
2014-05-02 2014-03-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 66,000 47 0.07 6,289 0.27 1.4782
2014-02-04 2013-12-31 13F OCCIDENTAL PETE COMMON STOCK 674599105 65,953 1,142 1.76 6,272 3.46 1.5095
2013-11-12 2013-09-30 13F/A-1 OCCIDENTAL PETE COMMON STOCK 674599105 64,811 660 1.03 6,062 5.90 1.6016
2013-10-21 2013-09-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 64,811 6,062
2013-08-12 2013-06-30 13F OCCIDENTAL PETE COMMON STOCK 674599105 64,151 64,151 5,724 1.5851
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.