The total market capitalization of the 6 largest technology stocks plus Berkshire Hathaway equals $8.8 trillion, about 28% of the total capitalization of the S&P 500 ($31 trillion).

(1) Apple ($2.03 trillion) —             +95.0%

(2) Microsoft ($1.78 trillion) —      +69.5%

(3) Amazon ($1.54 trillion) —         +84.3%

(4) Alphabet ($1.40 trillion) —        +84.4%

(5) Facebook ($765 billion) —         +73.8%

(6) Tesla ($658 billion) —                  +519%

(7) Berkshire Hathaway ($604 billion)  — +45.1%

U.S. Stock Indexes:

S&P 500 —      +59.0%

DJIA     —           +54.6%

Nasdaq  —         +85.0%