06:48 AM EDT, 05/21/2025 (MT Newswires) -- The most-talked-about stocks in the Reddit ( RDDT ) subforum Wallstreetbets were mixed hours ahead of Wednesday's opening bell.

Wolfspeed ( WOLF ) fell 55.6% pre-bell, after closing Tuesday with a 10.3% fall. Wolfspeed ( WOLF ) is preparing to file for bankruptcy in the coming weeks after rejecting creditor-led proposals to restructure its $6.5 billion in debt, The Wall Street Journal reported, citing unnamed sources familiar with the matter.

UnitedHealth Group ( UNH ) was down 5.8% premarket, swinging from a 1.8% rise at Tuesday's close.

Nebius Group ( NBIS ) declined by 2.4% pre-bell, swinging from a 4.2% increase at Tuesday's close. Nebius Group ( NBIS ) reported a wider Q1 adjusted net loss

Reddit ( RDDT ) was almost 2% lower in pre-bell activity, after closing Tuesday with a 2.2% decline.

Nvidia ( NVDA ) fell by 1.1% in premarket hours, following a 0.9% decline at Tuesday's close.

D-Wave Quantum ( QBTS ) rose by 12.2% hours before market open, following a 25.9% rise from the previous session. D-Wave Quantum ( QBTS ) has launched its Advantage2 quantum computing system.

Tesla (TSLA) was 0.2% higher in pre-bell hours, following a 0.5% increase from the previous session.

Alphabet (GOOG) advanced by 0.1% premarket, swinging from a 1.5% decline at Tuesday's close.