FAANG Options Expiration Gamma Pin Game

This Fri (not next) has largest gamma expiry today:
$AAPL: 380
$AMZN: 3200
$NFLX: 500
$GOOGL: 1500
$FB: 240 (next Fri is largest)

I believe this is why market isn't selling. It's pinned. On these names.

And unpinned can equal unwind $QQQ https://t.co/6BCAdPBf5z