Marathon Digital Holdings, Inc. (NASDAQ:MARA) and Riot Platforms, Inc. (NASDAQ:RIOT) shares are trading higher Thursday. Bitcoin (CRYPTO: BTC) is up more than 4% and is trading above $45,000. What To Know: Marathon Digital and Riot Platforms shares have had a tough start to 2024 and are trading more than down by 17% and 20%, respectively, year-to-date. Both companies also reported a decrease in monthly Bitcoin production for January earlier this week. Shares of the Bitcoin miners appear to be trading higher with the price of Bitcoin which has breached the $45,000 mark on Thursday. Bitcoin has …