$NVIDIA (NVDA.US)$
Can someone explain this?

$Tesla (TSLA.US)$
Can someone explain this?

Good afternoon, traders. It's finally Friday, July 26; the market is open, and prices are taking back some losses felt in a pullback midweek.
My name is Kevin Travers, here are stories from the herd on Wall St today.
$3M (MMM.US)$ lifted the low end of its full-year earnings outlook on Friday after reporting second-quarter results above market estimates, it flew 19%, yanking the Dow higher as the highest advancer.
$DexCom (DXCM.US)$ fell 41%,...

Morning mooers! It's Wednesday, May 29th, The market is trailing into decline after one more day of tech stock advancement Tuesday that saw the Nasdaq jump over 17k for the first time.
My name is Kevin Travers, the market is so red even $NVIDIA (NVDA.US)$ is finally pulling back, and here are stories heard on Wall Street today:
$American Airlines (AAL.US)$'s stock fell 14% Wednesday after the company cut its performance...