The latest data from Matrixport shows that the Bitcoin ETF (IBIT) options launched by BlackRock triggered a positive response in the market, with trading volume and open interest increasing significantly, indicating that investors are optimistic about the future trend of Bitcoin. Options data for the December expiry show that implied volatility has fallen to about 65%, signaling weaker market expectations for price volatility. As implied volatility declines, the cost of Bitcoin call options decreases, and investors are expected to expand their positions at lower prices, further driving market demand and price increases.