Encrypted mining company Argo Blockchain PLC (LON: ARB) reported that as the company continued to conduct bitcoin mining, profit margins slightly expanded, and revenue increased in April. Specifically, the income in April was 6.7 million pounds, higher than the 6.57 million pounds in March, and the average monthly profit margin was about 85%. The output in one month was 163 bitcoins, compared with 165 in March. As of the end of April, the company stated that it held 936 (or equivalent) bitcoins.