Bitcoin mining stocks show an optimistic start to the week while major market participants like Michael Saylor continue aggressive Bitcoin acquisition with rumors that GameStop may add Bitcoin to its balance sheet.• DMG Blockchain trades at a market cap valuing its Bitcoin holdings at 110% of the company's total value• Most miners are currently operating at thin margins with Bitcoin price needing to reach $120k-$130k for reasonable profitability• Iron leads all public miners with 72.3% gross margins due to their 15J/TH fleet efficiency and 3.2¢ power costs• Global hashrate has increased 80% since January 2024, from 500 EH/s to over 900 EH/s, creating Bitcoin mining's "second halving"• Bit Digital announces new Montreal data center acquisition supporting their growing HPC business with $100M in annualized revenue• Miners with significant Bitcoin holdings may face large paper losses in Q1 financial reportsSubscribe to McNally Money for more power mining analysis and let us know your Bitcoin price target for the end of 2025.