Rubrik (RBRK) stock is down near $70 after peaking above $89 — but its subscription ARR is still growing over 30%. Here's the reverse DCF and margin math behind why the recovery has stalled.

Rubrik (NYSE: RBRK) is one of the smaller names in the cybersecurity sector, operating in the data storage and backup security niche — a category distinct from network security players like Palo Alto Networks and Fortinet, or endpoint security leaders like CrowdStrike. In this excerpt from our Semiconductor Insider Live session, Nick and Kasey Rossolillo break down why Rubrik has lagged the broader cybersecurity recovery even as subscription ARR growth stays above 30% and reported revenue grows nearly 40% year-over-year.

We dig into the free cash flow story to explain why it has stalled sequentially even as it grows year-over-year. We also explore what that margin compression means for a smaller, AI-infrastructure-dependent company, and how Rubrik's balance sheet ($1.7B cash vs. $1.1B long-term debt) holds up. Finally, we run a reverse discounted cash flow (DCF) analysis to see what growth assumptions are baked into the current stock price and discuss how small and mid-cap software stocks fit into a diversified, long-term portfolio strategy.

This is educational content for self-directed investors evaluating semiconductor-adjacent software and cybersecurity plays in 2026.

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Related Episode: We called this back in June — Listen/Watch here

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CSI owns shares of Rubrik.