[Michael Saylor: STRC Bitcoin credit spread is 53 basis points, USD duration is 3.8 years] Odaily Planet Daily News - Michael Saylor posted on the X platform stating that under the assumptions of a 10% annualized return for Bitcoin, 40% Bitcoin volatility, and a Bitcoin price of $81,200, the USD duration is 3.8 years, and the STRC Bitcoin credit spread is 53 basis points.