AI Security Stock Rubrik Soars 7%, Market Cap Approaches 1 Trillion Won

Cloud data security firm Rubrik Inc (NYSE: RBRK) closed at $49.01 on the New York Stock Exchange, up 7.53%, lifting its market capitalization to about $7.7 billion (approximately KRW 11.8 trillion) and adding roughly $630 million (around KRW 1 trillion) in a single session.

Trading volume reached about 1.7 million shares, a marked increase from usual levels, as investor optimism around security and AI themes supported the stock price.

At month-end, Rubrik announced a new integration with Microsoft Defender, strengthening its unified response capabilities from identity-based cyberattack detection through recovery.

Earlier, the company secured growth capital by issuing $1 billion of convertible senior notes due 2025, aligning its aggressive product and AI investments with positive stock momentum.

Headquartered in Palo Alto, California, Rubrik offers its flagship Rubrik Security Cloud to protect data across enterprise, cloud, and SaaS environments. Founded in 2014 and backed by strategic investors including Microsoft, the company went public on the NYSE in April 2024 and now competes with traditional backup vendors through its zero-trust-based data security platform.