A full-out broke out over the weekend between Elon Musk and Bitcoiners, sending the price of bitcoin plunging to a new cycle low of $42K. There's been the most modest bounces since, with the price currently hovering just over $44K.Among the names down sharply: Coinbase ([[COIN]] -7.5%), Riot Blockchain ([[RIOT]] -12.9%), Marathon Patent ([[MARA]] -10.7%), Canaan ([[CAN]] -4.8%), Galaxy Digital ([[BRPHF]] -6.3%), Grayscale Bitcoin Trust ([[GBTC]] -8.6%).Ark Invest jumps in this morning, saying Bitcoin mining will be a net positive for the environment.