Company · Ownership research

OCCIDENTAL PETROLEUM CORP /DE/ OXY

CIK 0000797468 · CUSIP 674599105

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 674599105 (OXY), not CUSIP 674599905 (OXY), CUSIP 674599955 (OXY), and does not merge CUSIPs.

This page lists the top 20 of 1,302 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	Berkshire Hathaway Inc CIK 1067983 · View history	$17.22B 264,941,431 shares	6.55%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2026	▾
02	DODGE & COX CIK 200217 · View history	$4.82B 74,085,572 shares	2.65%	-5.39M(-6.80%)Reduced	SEC filing ↗ May 14, 2026	▾
03	BlackRock, Inc. CIK 2012383 · View history	$3.42B 52,637,811 shares	0.06%	+2.02M(+4.00%)Added	SEC filing ↗ May 13, 2026	▾
04	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$3.08B 47,412,976 shares	0.08%	—	SEC filing ↗ May 15, 2026	▾
05	STATE STREET CORP CIK 93751 · View history	$2.82B 43,270,797 shares	0.10%	+3.73M(+9.40%)Added	SEC filing ↗ May 15, 2026	▾
06	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$2.35B 36,185,199 shares	0.12%	—	SEC filing ↗ May 8, 2026	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$1.25B 19,368,894 shares	0.08%	+522.66K(+2.80%)Added	SEC filing ↗ May 15, 2026	▾
08	GQG Partners LLC CIK 1697233 · View history	$1.19B 18,311,639 shares	1.89%	+18.31MNew	SEC filing ↗ May 12, 2026	▾
09	MORGAN STANLEY CIK 895421 · View history	$713.48M 10,976,687 shares	0.04%	-421.90K(-3.70%)Reduced	SEC filing ↗ May 15, 2026	▾
10	H&H International Investment, LLC CIK 1759760 · View history	$667.00M 10,261,500 shares	3.33%	-2.91M(-22.10%)Reduced	SEC filing ↗ May 19, 2026	▾
11	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$651.05M 10,014,092 shares	0.14%	-588.57K(-5.60%)Reduced	SEC filing ↗ May 7, 2026	▾
12	AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history	$566.73M 8,718,934 shares	0.26%	+6.07M(+229.10%)Added	SEC filing ↗ May 15, 2026	▾
13	Invesco Ltd. CIK 914208 · Amended · View history	$491.52M 7,561,875 shares	0.05%	+831.03K(+12.30%)Added	SEC filing ↗ May 12, 2026	▾
14	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$435.97M 6,707,201 shares	0.03%	+486.07K(+7.80%)Added	SEC filing ↗ May 18, 2026	▾
15	NORTHERN TRUST CORP CIK 73124 · View history	$422.28M 6,496,660 shares	0.06%	+5.94K(+0.10%)Added	SEC filing ↗ May 14, 2026	▾
16	Bank of New York Mellon Corp CIK 1390777 · View history	$374.47M 5,761,082 shares	0.07%	+1.78M(+44.60%)Added	SEC filing ↗ May 5, 2026	▾
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$366.30M 5,635,341 shares	0.06%	+244.79K(+4.50%)Added	SEC filing ↗ May 15, 2026	▾
18	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$316.71M 4,872,439 shares	0.07%	+912.80K(+23.10%)Added	SEC filing ↗ May 13, 2026	▾
19	Pacer Advisors, Inc. CIK 1616667 · Amended · View history	$304.81M 4,689,357 shares	0.87%	-458.79K(-8.90%)Reduced	SEC filing ↗ Jun 18, 2026	▾
20	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$301.93M 4,645,133 shares	0.04%	+192.91K(+4.30%)Added	SEC filing ↗ May 15, 2026	▾

Showing 20 / 1,302 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

1,302

Cancelled or null records excluded

Disclosed shares

801,937,271

Not deduplicated across managers

Disclosed value

$52.11B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

OCCIDENTAL PETROLEUM CORP /DE/ · Q1 2026

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.