According to Farside Investors (@FarsideUK), option open interest for the Blackrock Bitcoin ETF ($IBIT) has reached $19.7 billion since trading began in November 2024. This steady increase in open interest signals strong institutional and retail demand for crypto-linked derivatives, suggesting heightened liquidity and potential volatility for Bitcoin and related crypto markets. Traders should closely monitor this trend, as rising derivatives activity often precedes significant price movements in underlying assets (Source: Farside Investors on Twitter, May 16, 2025).