YYForce (YFOR) shares were down 39% in premarket activity Wednesday, reversing the 13% rise in the prior session when the company announced a partnership with Novotel Singapore on Stevens and Mercure Singapore on Stevens to introduce service robots across the hotels' 772-room precinct.

JBDI (JBDI) stock was 25% lower following a more than 261% rise on Tuesday.

Biomea Fusion (BMEA) shares were down 23% following the release of the company's phase 1 GLP-131 clinical trial results for its weight-management candidate, BMF-650.

MasterBeef Group (MB) stock was more than 16% lower after trading flat in the prior session.

Skydance (SKYD) shares were down 16% after a 1.2% gain at Tuesday's close. Skydance (SKYD)-owned CNN, Versant Media's MS NOW and Politico secured a court order blocking President Donald Trump's attempt to ban their journalists from the White House, with a federal judge ruling that the restrictions likely violated their First and Fifth Amendment rights.