Notable Monday Option Activity: UNF, BX, PUBM

Blackstone Inc (BX) and PubMatic Inc (PUBM) both experienced significantly elevated options trading volumes, with BX's 20,565 contracts representing 58.7% of its average daily trading volume and PUBM's 3,519 contracts representing 58.1%. Notably high activity was observed in BX's July 2025 $135 put options and PUBM's October 2025 $17.50 call options, indicating increased investor focus or hedging strategies around these specific strike prices and expirations.

Analysis

Blackstone (BX) and PubMatic (PUBM) have both registered exceptional options trading volume, representing 58.7% and 58.1% of their respective average daily share volumes, indicating a significant increase in investor positioning. For Blackstone, a notable concentration of 4,496 contracts was observed in the July 2025 $135 strike put options, suggesting a strategic bearish bet or a substantial hedging program against a price decline below $135 over the long term. Conversely, PubMatic saw significant interest in its October 2025 $17.50 strike call options, with 1,515 contracts traded. This activity signals a clear bullish stance, with investors positioning for potential upside beyond the $17.50 level. The long-dated nature of these specific options contracts for both companies implies that these are not merely short-term tactical trades, but rather reflect more fundamental, long-term outlooks on their respective valuations.

Key Decisions for Investors

• For Blackstone (BX), the significant volume in long-dated puts warrants a review of long positions and an investigation into potential negative catalysts that could drive the stock below the $135 strike price.
• Investors bullish on PubMatic (PUBM) may view the concentrated call buying as a positive signal, justifying further due diligence on the company's long-term growth prospects to align with this market sentiment.
• Given the unusual volume in both tickers, traders should monitor for potential increases in implied volatility and consider that these specific option flows point towards strategic, long-term positioning rather than short-term market noise.