Just five of the more than 2,500 companies in the Nasdaq Composite Index are largely responsible for Tuesday’s first-ever close above 6,000.
The big five are Apple Inc., Amazon.com Inc., Facebook Inc., Microsoft Corp. and Alphabet Inc., Google’s owner.
Together they accounted for about 45 percent of the Nasdaq’s rise from 5,500, reached on Jan. 6, according to data compiled by Bloomberg.
As a reminder, the Big 5 account for over 10% of total US stock market capitalization now... a record high...
The question is, of course, what happens next?