Crypto-related stocks includingCoinbase Global Inc (NASDAQ: COIN), Marathon Digital Holdings Inc (NASDAQ: MARA) and Riot Platforms Inc (NASDAQ: RIOT) are trading higher Monday amid a weekend increase in the price of Bitcoin (CRYPTO: BTC). What To Know: Bitcoin crossed the $40,000 level over the weekend and has continued to trend higher to start the week. Bitcoin is now up more than 5% over a 24-hour period, adding to gains of approximately 145% since the start of the year, according to Benzinga Pro. The rally in the crypto space this year has largely been fueled by continued optimism surroundi…