The most-talked-about stocks in the Reddit subforum Wallstreetbets were mixed hours before Tuesday's opening bell.

UnitedHealth Group (UNH) rose by 6.5% in pre-bell activity, following a 1.5% increase at Monday's close.

Micron Technology (MU) fell by 0.2% premarket, following a 3.2% rise from the previous session.

Microsoft (MSFT) was down 0.1% hours before market open, after a 0.2% decline at Monday's close.

Antero Midstream (AM) was marginally higher premarket, after a 0.7% decline from Monday's session.

Clear Secure (YOU) declined by 0.3% pre-bell, following a 0.8% increase from the previous session.

JPMorgan Chase (JPM) was down 0.4% in premarket activity, swinging from a 0.8% increase at Monday's close.

W&T Offshore (WTI) rose by 0.2% premarket, after closing Monday with an 8.6% rise.

Tesla (TSLA) was 0.6% lower pre-bell, after a 2.2% decline from the previous session.