Bitcoin's volatility has dropped to its lowest level in nine months, signaling a period of calm in the crypto market. The Bitcoin Volmex Implied Volatility Index fell to 36.11 during Asian trading hours on Monday, marking its lowest point since September last year. This index measures expected 30-day Bitcoin volatility based on real-time crypto option prices. In May, US spot Bitcoin ETFs experienced net outflows of approximately $1 billion, ending a two-month trend of net inflows and suggesting a decline in investor demand. Caroline Mauron of Orbit Markets highlighted a shift in retail investor interest towards other trading opportunities. Meanwhile, Rajiv Sawhney from Wave Digital Assets noted that selling volatility has become a key strategy for long-term holders and large funds to generate returns from Bitcoin holdings.