- Snap shares plunged after socialite Kylie Jenner tweeted one year ago about how little she used its Snapchat app.
- The tweet underscored broader issues with the app.
- Jenner's tweet didn't quite mark the stock's top, but nevertheless, Snap is still down 50% amid fierce competition and a string of executive departures.
- Watch Snap trade live here .
One year ago Thursday, Kylie Jenner tweeted her displeasure with Snapchat.