06:34 AM EDT, 06/17/2025 (MT Newswires) -- The most-talked-about stocks in the Reddit ( RDDT ) subforum Wallstreetbets were mixed hours before Tuesday's opening bell.

Reddit ( RDDT ) was 3.2% higher in pre-bell hours, after closing Monday with a 6.8% rise.

Advanced Micro Devices ( AMD ) was up 0.5% in premarket activity, following an 8.8% rise from the previous session.

Palantir Technologies ( PLTR ) advanced by 0.5% pre-bell, after closing Monday with a 2.9% increase.

Antero Midstream ( AM ) was 0.4% higher in premarket activity, swinging from a 0.6% decline at Monday's close.

AST SpaceMobile ( ASTS ) fell by 2.2% premarket, swinging from a 9.2% rise at Monday's close.

Tesla (TSLA) declined by 0.7% premarket, swinging from a 1.2% increase at Monday's close.

Nvidia ( NVDA ) was 0.2% lower hours before market open, following a 1.9% increase from the previous session.

UnitedHealth Group ( UNH ) was down 0.2% in pre-bell hours, after closing Monday with a 1.2% decline.