CoinShares: Bitcoin mining margins tighten; 15–20% of miners unprofitable as post-halving hashprice hits ~$28 PH/s/day

CoinShares says conditions in the Bitcoin mining sector are tightening. The firm estimates 15–20% of miners are operating unprofitably, pressured by a post-halving decline in hashprice to about $28 PH/s/day in February 2026.