ソース:[1] Bakkt stock jumps over 40% after naming crypto vet Mike Alfred to board (https://www.theblock.co/post/371733/bakkt-sto ...)[2] Bakkt rallies over 40% as Mike Alfred takes board seat - Cryptopolitan (https://vertexaisearch.cloud.google.com/groun ...)[3] Bakkt Appoints Mike Alfred to Board to Accelerate Growth Strategy (https://vertexaisearch.cloud.google.com/groun ...)