On September 24th, Matrixport pointed out in the latest report: "Although Bitcoin is naturally volatile, the 30-day rolling return shows that its price has remained in the + 20% floating range for the past 18 months. We expect volatility to decrease further, so in early 2023 we recommend a put option strategy, including selling out-of-the-money put and call options, for additional gains. Even if there are losses, the strategy has generally performed well as volatility has generally declined. With the introduction of bitcoin ETF-related options, more institutional participants are expected to enter the market to further compress volatility. Therefore, selling volatility remains a viable strategy for bitcoin holders to reap additional benefits. "