Notable Thursday Option Activity: BYRN, Z, IIPR

Zillow Group (Z) and Innovative Industrial Properties (IIPR) are experiencing unusually high options trading volume today, with both exceeding 106% of their respective average daily share trading volumes. Z saw concentrated activity in its July 2025 $78 strike call options, indicating significant bullish interest, while IIPR's volume was dominated by its January 2026 $40 strike put options, suggesting notable bearish or protective positioning.

Analysis

Unusual options market activity has been observed in Zillow Group (Z) and Innovative Industrial Properties (IIPR), with total options volumes reaching 107.2% and 106.1% of their respective average daily share trading volumes. The activity in Zillow is notably concentrated and bullish, with 16,542 contracts, representing approximately 1.7 million underlying shares, trading on the July 11, 2025, $78 strike call. This single strike accounts for over 81% of the day's reported options volume, signaling a significant, long-term bullish bet on the company's stock appreciating past $78. Conversely, the activity in IIPR points towards a bearish or protective stance. A substantial portion of its volume was focused on the January 16, 2026, $40 strike put option, with 2,001 contracts traded. This suggests a targeted, long-term hedge or a directional bearish position being established by market participants.

Key Decisions for Investors

• Given the substantial, concentrated buying of long-dated Zillow call options at the $78 strike, investors should assess potential catalysts that could support a significant upward move in the stock by mid-2025.
• The high volume in long-dated $40 strike puts for Innovative Industrial Properties warrants a review of potential downside risks and company-specific headwinds, as this activity may signal a large protective hedge or a significant bearish bet.