Boost Run shares rose after the company said it signed a lease to expand GPU capacity.

The stock climbed 13% to $25.55 in premarket trading Friday. Through the prior close, shares were up 75% since the company went public in May.

The cloud infrastructure provider said it finalized a long-term lease with 10X Capital's infrastructure platform for GPU infrastructure capacity across multiple sites.

The initial lease covers 20 megawatts of gross capacity at an existing site, and Boost Run plans to scale up to 111 megawatts across two more sites throughout 2027. The initial 20 megawatts are expected to be delivered in the fourth quarter.

The Northbrook, Ill., company also said second-quarter revenue nearly quadrupled year-over-year to $31.1 million.

"Demand is not our constraint," Chief Executive Andrew Karos said. "Everything we sold this quarter was contracted before the hardware was energized, and the pipeline behind it is larger than anything we have seen in the history of this company."