Bitcoin mining stock tanks following alleged insider sell-off [https://www.thestreet.com/.image/t_share/MjE3OTc4MjIwNDcxOTg1NzY2/gettyimages-2207918690.jpg] Bitcoin mining stock tanks following alleged insider sell-off Bitfarms Ltd. shares declined more than 15% on Sep. 23. [https://www.thestreet.com/crypto/investing/bitcoin-mining-stock-tanks-following-alleged-insider-sell-off]