A 1,700-contract block in August 42 calls signals institutional bullish bets on the cybersecurity firm, with call-to-put ratios running heavily skewed toward upside.

The Trade: Big Block in Out-of-the-Money Calls

Tenable Holdings (TENB) drew significant options attention when traders bought 1,700 contracts of the August 42 calls at a $2.00 ask. At the time, the stock was trading around $36.64—meaning these calls are 15% out of the money and betting on a meaningful move higher before expiration.

What the Ratio Tells Us

The call-to-put positioning on Tenable has skewed heavily toward calls, running a 40-to-1 ratio favoring bullish bets. In plain terms: for every put contract traded (a bearish bet), 40 call contracts were traded (bullish). That's an unusually lopsided positioning, suggesting institutional traders are accumulating upside exposure rather than hedging downside risk.

Why This Matters

Large block trades in out-of-the-money options often signal conviction plays. Someone is spending capital on the bet that Tenable moves higher by mid-August. These trades can indicate institutional positioning ahead of catalysts or simply reflect elevated demand for upside leverage. Options markets can reveal where sophisticated traders expect volatility or directional movement before it shows up in the stock price itself.