CoinWorld news, ahead of Federal Reserve Chairman Powell's speech at the Jackson Hole annual meeting, BTC options pricing shows an expected volatility of about ±2%. Volmex data shows that the one-day implied volatility index has risen to an annualized 49%, a new high since May, equivalent to a 24-hour volatility of 2.5%. Some traders have increased their holdings of put options to hedge against a potential downward adjustment if Powell's remarks are neutral.