The PRZ for the large bearish shark has proven difficult for FB and now it's finally had a daily close below it, meaning the entire shark pattern is in play. Daily RSI has been diverging for awhile now so all it needed was a little shove in the right direction.
Notice how despite rallying hard off the bottom today, it simply could not break back inside the box. A short here would target the 0.5 retrace of the shark and gap fill around $148. SL is 166.70 if it manages to close back inside the box.
Would probably take a wider market selloff for this move to happen... but I think this and Boeing are just the first shoes to drop for this bubblicious market.