Social Buzz: Wallstreetbets Stocks Fall Pre-Bell Thursday; Rocket Lab, CoreWeave to Open Lower

06:41 AM EDT, 10/15/2026 (MT Newswires) -- The most-talked-about stocks in the Reddit subforum Wallstreetbets were falling hours before Thursday's opening bell. Rocket Lab (RKLB) was 9.3% lower pre-bell, after a 7.9% fall from the previous session. Rocket Lab delayed the first launch of its Neutron rocket to 2027 after identifying an issue with the manufacturing process on the forward dome, chief executive officer Peter Beck said in a video presentation on Wednesday. CoreWeave (CRWV) was down 5.9% premarket, following a 15.5% fall at Wednesday's close. CoreWeave chief executive officer Mike Intrator said a plunge in the company's stock and bond prices is due to the market acting "irrationally," Bloomberg reported, citing a memo it saw. Sandisk (SNDK) was 4.5% lower hours before market open, after a 5.3% fall from Wednesday's session. Nebius Group (NBIS) declined by 3.5% in pre-bell activity, after closing Wednesday with a 10.1% decline. Micron Technology (MU) fell by 4% pre-bell, after a 4.1% decline from the previous session. AST SpaceMobile (ASTS) was 3.4% lower in recent premarket hours, after a 10.5% fall at Wednesday's close. Taiwan Semiconductor Manufacturing (TSM) fell by 1.9% in pre-bell activity, after a 3.4% decline from the previous session. Nvidia (NVDA) was 2% lower premarket, following a 3.2% decline from Wednesday's session.