Group 1: Zeta Global Holdings Corp (ZETA) - Zeta Global Holdings Corp experienced significant options trading volume with a total of 31,228 contracts traded, equating to approximately 3.1 million underlying shares, which is about 43.3% of its average daily trading volume of 7.2 million shares over the past month [1] - The $21 strike call option expiring on September 19, 2025, saw particularly high activity with 4,704 contracts traded, representing around 470,400 underlying shares [1] Group 2: Starbucks Corp (SBUX) - Starbucks Corp recorded an options trading volume of 34,848 contracts, representing approximately 3.5 million underlying shares, which is about 42.9% of its average daily trading volume of 8.1 million shares over the past month [2] - The $100 strike put option expiring on September 19, 2025, had notable volume with 2,868 contracts traded, equating to approximately 286,800 underlying shares [2] Group 3: Rambus Inc (RMBS) - Rambus Inc saw options trading volume of 5,300 contracts, representing approximately 530,000 underlying shares, or about 42.9% of its average daily trading volume of 1.2 million shares over the past month [3] - The $80 strike call option expiring on October 17, 2025, experienced significant trading with 889 contracts, representing around 88,900 underlying shares [3]