06:33 AM EDT, 05/20/2026 (MT Newswires) -- The most-talked-about stocks in the Reddit subforum Wallstreetbets were mixed hours before Wednesday's opening bell.

Micron Technology ( MU ) rose by 4% premarket, following a 2.5% increase from the previous session.

Advanced Micro Devices ( AMD ) was 2.4% higher in pre-bell activity, offsetting a 1.7% decline from Tuesday's session.

Sandisk ( SNDK ) was up 2.2% in premarket hours, after a 3.8% increase at Tuesday's close.

Nvidia ( NVDA ) was up 1.8% hours before market open, reversing a 0.8% decline at Tuesday's close.

Tesla (TSLA) was 1.1% higher premarket, swinging from a 1.4% decline at Tuesday's close.

ServiceNow ( NOW ) declined by 1.5% pre-bell, following a 1.5% fall from the previous session.

Rocket Lab ( RKLB ) fell by 0.8% in pre-bell activity, after closing Tuesday with a 2.9% decline.

Microsoft ( MSFT ) was down 0.4% in premarket hours, after a 1.4% decline from Tuesday's session.