06:45 AM EDT, 05/15/2025 (MT Newswires) -- The most-talked-about stocks in the Reddit ( RDDT ) subforum Wallstreetbets declined hours before Thursday's opening bell.

UnitedHealth Group ( UNH ) fell by 6.2% in premarket activity, following a 1.1% decline from the previous session.

Super Micro Computer ( SMCI ) declined by 3% pre-bell, swinging from a 15.7% rise at Wednesday's close.

Tesla (TSLA) was down 3% premarket, swinging from a 4.1% increase at Wednesday's close.

Nvidia ( NVDA ) was 1.5% lower in premarket hours, after closing Wednesday with a 4.2% increase.

Palantir Technologies ( PLTR ) fell by 1.8% in pre-bell activity, reversing a 1.6% increase from the previous session.

Reddit ( RDDT ) was down 1.6% hours before market open, swinging from an 11.1% rise at Wednesday's close.

Advanced Micro Devices ( AMD ) was 1.2% lower pre-bell, following a 4.7% increase from the previous session.

Alphabet (GOOG) declined by 0.9% premarket, swinging from a 3.7% rise at Wednesday's close.