Noteworthy Options Trading in Russell 3000 Components: A Focus on Digimarc, Zscaler, and Vistra

Significant Activity in Digimarc Corp Options

Looking at the options trading landscape today among the Russell 3000 index components, Digimarc Corp (Symbol: DMRC) stands out. The total volume has reached 1,115 contracts, equating to approximately 111,500 underlying shares. This volume represents 59.7% of DMRC’s average daily trading volume of 186,885 shares over the past month. A notable surge involved the $35 strike put option, which expires on March 21, 2025. So far, 600 contracts have been traded, translating to about 60,000 underlying shares. Below is a chart illustrating DMRC’s trading history over the past twelve months, with the $35 strike mark highlighted in orange:

Zscaler Inc Shows Robust Options Trading Volume

Turning to Zscaler Inc (Symbol: ZS), today’s options trading volume has reached 9,947 contracts, corresponding to around 994,700 underlying shares. This volume is 58.7% of ZS’s average daily trading volume of 1.7 million shares over the last month. A significant portion of this activity is related to the $190 strike put option, expiring on January 17, 2025, which has seen 1,020 contracts traded, representing approximately 102,000 underlying shares. Below, the trading history for ZS over the past twelve months is shown, with the $190 strike option highlighted in orange:

Options Activity at Vistra Corp

Vistra Corp (Symbol: VST) has also witnessed noteworthy options trading today, with a volume of 33,949 contracts—about 3.4 million underlying shares. This represents 58.2% of VST’s average daily trading volume of 5.8 million shares over the past month. The $165 strike put option, which also expires on January 17, 2025, has generated high activity, trading 2,637 contracts and representing around 263,700 underlying shares. The following chart depicts VST’s trading activity over the last twelve months, highlighting the $165 strike option in orange:

For details about different expirations related to DMRC, ZS, or VST options, visit StockOptionsChannel.com.

Today’s Most Active Call & Puts Options of the S&P 500 »

Additional Resources:

• Institutional Holders of ONS
• CNGO Options Chain
• Institutional Holders of CTHR

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