Rubrik Inc. Class A Common Stock vs White Mountains Insurance Group Ltd. Common Stock — how do they compare? Rubrik Inc. Class A Common Stock trades at $109.59 (market cap $23.61B), while White Mountains Insurance Group Ltd. Common Stock trades at $2,090 (market cap $5.01B). The key difference: Rubrik Inc. Class A Common Stock is far larger — about 4.7× White Mountains Insurance Group Ltd. Common Stock's market cap, and White Mountains Insurance Group Ltd. Common Stock pays a 0.05% dividend while Rubrik Inc. Class A Common Stock pays none. Which is the better fit depends on your goals.
| RBRK | WTM | |
|---|---|---|
Market Cap | $23.61B | $5.01B |
Volume | 2,764,516 | 19,324 |
Sector | Technology | Financials |
52-Week High | $125.80 | $2.32K |
52-Week Low | $43.81 | $1.85K |
Typical Hold Time | 4 Days | — |
Enterprise Value | $23.01B | $5.84B |
Dividend Yield | — | 0.05% |
Signals from Pluang's Aura AI — not financial advice
Rubrik (RBRK) trades at $118.47, down 1.28% on the day, with strong technical momentum showing bullish moving averages and support at $118. The company demonstrates impressive revenue growth, with 2026 revenue reaching $1.5B and recent earnings beats, though profitability remains negative with a -16.5% net margin. Recent news highlights expansion of AI security offerings including Rubrik Code Guardian and strong institutional buying interest.
Rubrik presents a compelling growth story in cybersecurity with 100% analyst buy ratings and $105.08 consensus target, though current price exceeds this. Key risks include persistent losses despite revenue growth and competitive AI security landscape. The stock's technical strength and AI-driven demand create upside potential, but profitability concerns warrant careful monitoring of margin improvement.
White Mountains Insurance Group (WTM) trades at $2,093.13, up 0.31% with neutral technical signals. The stock shows strong fundamentals with a P/E of 4.8 and ROE of 21.9%, though recent earnings were mixed with Q2 2026 beating estimates while Q1 missed. Book value per share reached $2,258 as of June 2026, up 4% quarterly. Recent product launches and board additions signal strategic growth initiatives.
WTM presents value investment appeal with attractive valuation multiples and solid profitability, but faces execution risks from volatile quarterly earnings and negative cash flow trends. Analyst consensus remains neutral with 100% hold ratings, suggesting cautious optimism pending clearer earnings consistency and cash flow improvement.
Trailing returns across standard periods
Rubrik provides data security and cyber recovery software for enterprises. Its platform protects data across on-premises, cloud, SaaS, and unstructured-data environments.
Read more on RBRK →White Mountains Insurance Group Ltd. is a Bermuda-based holding company that owns and builds insurance and financial services businesses. Its operating segments include Ark, a specialty insurance and reinsurance underwriter; HG Global, which reinsures municipal bond insurer Build America Mutual; and Kudu Investment Management, which provides capital to boutique asset managers.
Read more on WTM →