Xunlei Limited shares surge 20.97% in premarket after reporting strong Q2 earnings and investment gains.

Xunlei Limited surged 20.97% in premarket trading, driven by a 30.6% year-over-year increase in total revenue to $104 million for the second quarter, primarily due to growth in core business revenue. The company also reported a significant increase in net profit, largely attributed to the change in the fair value of its long-term investment in Shadowstone Innovation, which completed its IPO in June 2025.