According to HODL15Capital, as of November 15, the $BTC holdings of major listed Bitcoin mining companies are ranked as follows:

MARA Holdings holds 27,562 BTC; Riot Platforms holds 10,928 BTC; Hut 8 holds 9,110 BTC; CleanSpark holds 8,701 BTC; HIVE Digital holds 2,624 $BTC ; Cipher Mining holds 1,428 BTC; Bitfarms holds 1,188 BTC.

Source: Wu Blockchain News