07:55 AM EDT, 07/02/2025 (MT Newswires) -- Namib Minerals ( NAMM ) shares were up 64% in recent Wednesday premarket activity, shaving Tuesday's loss.

Gryphon Digital Mining ( GRYP ) stock jumped 40%, a day after the company said it filed an amended registration statement on Form S-4 with the US Securities and Exchange Commission in connection with its previously announced merger deal with American Bitcoin.

Greenbrier (GBX) shares rose 13%, a day after the company reported higher fiscal Q3 earnings and revenue.

Hut 8 ( HUT ) stock was 4.4% higher after the company said that its four natural gas-fired power plants in Ontario have been awarded five-year capacity contracts from the Ontario Independent Electricity System Operator.