[S&P Global Ratings Downgrades Tether Stability Assessment to Lowest Level] Odaily Planet Daily News: S&P Global Ratings has downgraded Tether's stability assessment rating to '5,' the weakest level in its rating system, citing an increase in high-risk reserve assets. S&P Global warned that USDT no longer has sufficient buffers to absorb a decline in Bitcoin's value. S&P stated that Bitcoin currently accounts for approximately 5.6% of USDT's total circulation, higher than the roughly 3.9% reserve buffer implied in Tether's latest Q3 financial report released at the end of October. This means that a sharp drop in Bitcoin's price, especially when combined with losses from other high-risk assets, could lead to insufficient collateral for USDT. (The Block)