Yes, it did help Apple as well. Moreover, Apple made a lot of money on the stock back in 1989 when Adobe went public.
Apple's 3.42 million shares of Adobe, purchased in November 1984 for $2.5 million, are now worth about $84 million. Based on today's price, Apple would register a pretax gain of more than $80 million in its fiscal fourth quarter, ending in September.
