High-Performing Cloud Security Stocks Lose 860 Billion in a Day

Rubrik Inc. (RBRK), a leading U.S. cloud data security stock, closed at $70.70 on the New York Stock Exchange today, down 5.13% from the previous day. Its market capitalization stands at approximately $11.3 billion (about ₩17 trillion), wiping out roughly $550 million (around ₩860 billion) in a single session.

Reports indicate that director Yvonne Wassenaar sold about $50,700 worth of shares under a pre‐established Rule 10b5-1 trading plan. At the same time, Rubrik is enhancing its AI security capabilities and partner strategy by launching a Claude‐based agent control tool and appointing a vice president for its Global Systems Integrator (GSI) and Managed Service Provider (MSP) group.

Founded in 2013 and headquartered in Palo Alto, California, Rubrik is a cloud data management and zero-trust data security company that provides enterprise data backup and ransomware recovery solutions. Since its April 2024 IPO on the NYSE, the company has been recognized as a leading growth stock, with subscription-based revenue driving quarterly sales growth of 30–40% year over year.