Sorry, available market cap data for Apple (AAPL) starts on July 1, 1985. Apple (AAPL) has a market capitalization of $3.8T, based on 14.78B shares at a price of $260.02 (down 0.3% today).

DATE	OPEN	HIGH	LOW	CLOSE	VOLUME
August 31 1982	$0.06	$0.06	$0.06	$0.06	140,560,000
August 30 1982	$0.06	$0.06	$0.06	$0.06	80,438,400
August 27 1982	$0.06	$0.06	$0.06	$0.06	98,649,600
August 26 1982	$0.06	$0.06	$0.06	$0.06	210,582,400
August 25 1982	$0.06	$0.06	$0.06	$0.06	357,078,400
August 24 1982	$0.06	$0.06	$0.06	$0.06	155,769,600
August 23 1982	$0.05	$0.05	$0.05	$0.05	69,686,400
August 20 1982	$0.05	$0.05	$0.05	$0.05	54,857,600
August 19 1982	$0.05	$0.05	$0.05	$0.05	47,622,400
August 18 1982	$0.05	$0.05	$0.05	$0.05	125,059,200
August 17 1982	$0.05	$0.05	$0.05	$0.05	47,734,400
August 16 1982	$0.05	$0.05	$0.05	$0.05	38,416,000
August 13 1982	$0.04	$0.05	$0.04	$0.04	25,961,600
August 12 1982	$0.05	$0.05	$0.04	$0.04	30,620,800
August 11 1982	$0.05	$0.05	$0.05	$0.05	69,888,000
August 10 1982	$0.04	$0.05	$0.04	$0.04	112,246,400
August 09 1982	$0.04	$0.04	$0.04	$0.04	56,112,000
August 06 1982	$0.04	$0.04	$0.04	$0.04	96,835,200
August 05 1982	$0.04	$0.04	$0.04	$0.04	69,753,600
August 04 1982	$0.04	$0.04	$0.04	$0.04	83,865,600
August 03 1982	$0.05	$0.05	$0.04	$0.04	89,868,800
August 02 1982	$0.05	$0.05	$0.05	$0.05	94,393,600