According to Bitget, Matrixport pointed out in its latest report: "Although Bitcoin is inherently volatile, the 30-day rolling return rate shows that its price has basically remained within a +20% fluctuation range over the past 18 months. We expect volatility to further decrease, so we suggest adopting a sell option strategy at the beginning of 2023, including selling out-of-the-money put and call options for additional income. Even though this strategy may result in losses, it still performs well overall as volatility decreases. With the introduction of Bitcoin ETF-related options, more institutional participants are expected to enter the market and further compress volatility. Therefore, selling volatility remains a viable strategy for Bitcoin holders to earn extra income."