Bitcoin mining giants Marathon Digital and Riot Platforms are bouncing back strong post-April halving. Marathon mined 717 BTC in October, worth $48.8 million, thanks to a 14% boost in its hashrate and higher transaction fees. Despite a 3% dip in block wins, Marathon's CEO highlighted the role of MARAPool and Slipstream in earning $400,000 from high-fee transactions. Riot also saw a 22.6% increase, mining 505 BTC, valued at $34.4 million, after ramping up its hashrate with new miners in Texas. Despite these gains, both companies saw a dip in stock prices.