S&amp;P 500 becomes S&amp;P 5.

Portfolio weight of largest 5 companies in S&amp;P 500 = “almost 23%”

Their weight 5 years ago = “less than 10%”

FT, June 15, p.18 $spx, $spy

(A 1% stock price move in these 5 now moves the Index 2.3 times more than 5 years ago.) https://t.co/ukBHKlTqfk