Trip.com dropped nearly 5% in premarket trading after a 17% decline in prior session. China's top market regulator said an investigation is underway over Trip.com Group's alleged antitrust conduct.

The regulator said Trip.com, one of China's biggest online travel agencies, allegedly abused its dominant market position and engaged in monopolistic practices. It didn't provide further details on the investigation.

Alibaba fell about 1% in premarket trading despite launched significant upgrades to its Qwen artificial intelligence app. The upgrade comes two months after Alibaba's major upgrade on the Qwen App as part of a strategic pivot into consumer-facing AI, an area where it had previously lagged domestic rivals ByteDance and Tencent while focusing primarily on enterprise AI services through its cloud business.

Sidus Space sharesrocketed 10% in premarket trading after a 20% rally in prior trading session. Sidus Space, Inc. is transitioning from low-margin contract manufacturing to a high-potential space tech and defense intelligence company, catalyzed by inclusion in the $151B MDA SHIELD contract pool.