Ardelyx options trading surges as stock falls 18%
According to exchange data compiled by Bloomberg and reported by Investing.com, Ardelyx Inc. options activity rose Friday morning to 11,147 contracts, with puts dominating (10,676). The October 16, 2026 $4 put led with 10,004 contracts. Ardelyx shares fell 18.4% to $3.98, and 3-month volatility rose to 74.93%.


