$FB &amp; $GOOG account for nearly half (43.9%) of $XLC; 20.6% for $FB &amp; 23.3% for $GOOG/L. $AMZN makes up about a quarter (24.4%) of $XLY. We explain why this leaves investors in these sectors vulnerable to regulatory risks especially after #COVID here:  https://t.co/qEvM0eKUeV $SPY https://t.co/4e38Nk8BeQ