Bitcoin mining stocks rallied on Wednesday after former US President Donald Trump wrote on Truth Social that bitcoin mining was the "last line of defense" against central bank digital currencies (CBDCs) and stressed that bitcoin should be mined in the US. TeraWulf shares briefly rose nearly 20% to $4.13 before retreating to $3.96, about 14% higher than the previous day's close. MicroStrategy and Hive Digital Technologies shares rose about 7% and 8%, respectively, and Iris Energy rose about 3%.