Investments in equity securities (Tables)

9 Months Ended

Sep. 30, 2020

Investments Debt And Equity Securities [Abstract]

Schedule of investments in equity securities

Investments in equity securities as of September 30, 2020 and December 31, 2019 are summarized in the tables below (in millions).

	Cost Basis		Net Unrealized Gains		Fair Value
September 30, 2020*
Banks, insurance and finance	$	27,145	$	29,065	$	56,210
Consumer products		37,016		98,022		135,038
Commercial, industrial and other		41,468		12,601		54,069
	$	105,629	$	139,688	$	245,317

* Approximately 70% of the aggregate fair value was concentrated in four companies (American Express Company – $15.2 billion; Apple Inc. – $111.7 billion; Bank of America Corporation – $24.9 billion and The Coca-Cola Company – $19.7 billion).

	Cost Basis		Net Unrealized Gains		Fair Value
December 31, 2019*
Banks, insurance and finance	$	40,419	$	61,976	$	102,395
Consumer products		38,887		60,747		99,634
Commercial, industrial and other		31,034		14,964		45,998
	$	110,340	$	137,687	$	248,027

* Approximately 60% of the aggregate fair value was concentrated in four companies (American Express Company – $18.9 billion; Apple Inc. – $73.7 billion; Bank of America Corporation – $33.4 billion and The Coca-Cola Company – $22.1 billion).