06:43 AM EDT, 06/16/2026 (MT Newswires) -- The most-talked-about stocks in the Reddit subforum Wallstreetbets were mixed hours before Tuesday's opening bell.

Space Exploration Technologies ( SPCX ) rose by 9.7% premarket, after a 19.6% increase at Monday's close.

Micron Technology ( MU ) was up 3.5% hours before market open, following a 10.8% rise from the previous session.

Sandisk ( SNDK ) was 2.5% higher premarket, after a 6.5% increase from Monday's session.

AST SpaceMobile ( ASTS ) advanced by 2% in pre-bell hours, following a 6.3% rise from the previous session.

Marvell Technology ( MRVL ) fell by 1.3% pre-bell, swinging from a 10.4% increase at Monday's close.

Tesla (TSLA) was 1.4% lower in premarket activity, reversing a 1.2% rise from the previous session.

Nvidia ( NVDA ) declined by 0.5% in pre-bell hours, after closing Monday with a 3.5% increase.

Microsoft ( MSFT ) was down 0.5% pre-bell, swinging from a 2.3% increase at Monday's close.