The largest five stocks by market capitalization are substantially outperforming the S&P 500 and the Dow Jones Industrial Average (DJIA) Year-To-Date (YTD) as of June 26, 2020. The total market capitalization of these 5 technology stocks equals $5.9 trillion, about 22% of the total capitalization of the S&P 500 ($27 trillion).

(1) Apple ($1.53 trillion) —       +20.4% YTD

(2) Microsoft ($1.49 trillion) — +24.5%

(3) Amazon ($1.34 trillion) —   +45.7%

(4) Google ($930 billion) —       +1.7%

(5) Facebook ($616 billion) —  +5.3%

Also,

Netflix ($195 billion) —           +37.0% 

S&P 500 —     -6.9%

DJIA     —      -12.3%

Nasdaq  —     +8.7%

Berkshire Hathaway ($427 billion)  —  -22.4%