$GPRO is up 33.53% in after-hours trading after a YouTuber became the company's largest shareholder. Retail is celebrating the headline, but the tape has seen this script before: across 2,881 historical catalyst gap-ups of 30% or more, stocks fade to close red 65% of the time with a median return of -6.79%.
On the other side of the tape, $CVKD slides 10.29% despite reporting positive FDA meeting results, while $SQFT dumps 17.35% into the evening on zero news.
When social media buzz replaces institutional volume, retail usually provides the exit liquidity.