Bitcoin traders are gauging the potential ripple effects from the U.S. stock market's quarterly “Witching Friday,” a major derivatives expiry that could influence risk appetite across asset classes during a week packed with macro catalysts. Bitcoin is trading flat over the past 24 hours, and remains under $90,000 for the third consecutive day, according to CoinGecko data. “Global markets are indeed facing multiple overlapping variables this week,” Tim Sun, senior researcher at HashKey Group, told Decrypt ...