Sirius XM (NASDAQ: SIRI) 30-day option implied volatility is at 51; compared to its 52-week range of 28 to 52. Call put ratio 21 calls to 1 put with a focus on expired April 24 weekly 26 and 26.50 calls weekly calls into iHeartMedia (IHRT holding talks about merger with Sirius XM, Bloomberg says.