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

Palantir Technologies (PLTR) stock was nearly 15% higher premarket, reversing a 1.2% decline at Monday's close. Palantir Technologies reported higher Q3 adjusted earnings and revenue in addition to lifting its 2024 sales guidance.

Hims & Hers Health (HIMS) shares were up 8% in pre-bell activity, following a 2% rise from the previous session. Hims & Hers Health swung to Q3 earnings as revenue rose and the company also lifted its 2024 sales guidance.

Trump Media & Technology Group (DJT) stock was up 5.7% in premarket hours, extending gains after a 12.4% increase from the previous session.

Viking Therapeutics (VKTX) shares were 3.6% higher in pre-bell hours, swinging from a 13% fall at Monday's close.

Tesla (TSLA) stock was up 2.2% hours before market open, swinging from a 2.5% fall at Monday's close.

Super Micro Computer (SMCI) shares were 1.3% higher pre-bell, reversing a 0.1% decline from the previous session.

Advanced Micro Devices (AMD) stock was up nearly 1% premarket after closing Monday with a 0.8% decline.

Nvidia (NVDA) shares were 0.8% higher in pre-bell hours following a 0.5% increase from the previous session.