Mining has become a business and it’s growing. It has daily expenses and for that miners need to sell their BTC to cover up electricity bill and other cost if exists. But is there any known miner who has not sold their BTC for a single time who is mining for a long time now? We know there are addresses which haven’t moved their BTC for a long time. Is any miner included in the list?
This is unlikely, it is possible that those that mined bitcoin at the beginning did not sold their coins but they stopped mining a long time ago, we know at least of one example of this variety and this was satoshi, however we need to remember that mining costs are very high and if this is not a hobby but actually an enterprise to make money then at some point you will need to sell your coins in order to raise some capital and pay your bills.