In October, ten major cryptocurrency mining companies collectively produced 4,444 BTC, according to recent reports. Cang Inc. (CANG) stood out with an operational efficiency exceeding 90%, mining 603 BTC. The company also reported 6,521 BTC in holdings and maintained a hash rate of 46.09 EH/s. Other significant contributors included IREN, which mined 668 BTC with a 44 EH/s hash rate, and FUFU, which produced 253 BTC at a 5 EH/s hash rate. The report also provided details on mNAV and per-thousand-share BTC holdings for each company.