According to Foresight News, JPMorgan has adjusted its ratings for several Bitcoin mining companies. The bank has downgraded CleanSpark (CLSK) from 'overweight' to 'neutral', while upgrading Riot Platforms (RIOT) from 'underweight' to 'neutral'. JPMorgan continues to maintain an 'overweight' rating for Iris Energy (IREN) and an 'underweight' rating for Marathon Digital.

These adjustments in ratings reflect the bank's changing outlook on the performance and potential of these Bitcoin mining companies. Investors may use these ratings as a guide when making decisions about their investments in the cryptocurrency mining sector.