Big Tech is 5 companies ( $MSFT, $AAPL, $AMZN, $GOOG &amp; $FB) in 3 sectors ( $XLK, $XLC &amp; $XLY). Their weightings meaningfully skew sector performance and investor perceptions as we review in tonight's report. Sign up free on https://t.co/pkogxvctiT to read it! $SPY $IVV