Best of Us Investors

NYSE: RBRK
The fastest-growing cybersecurity company in the market. Category leader in data protection, cyber resilience, and enterprise AI security.
Q4 FY2026 earnings report due March 12, 2026 — just days away. Analysts expect continued revenue acceleration above 48% YoY. Wedbush rates RBRK a "Strong Buy" with "No Lost Deals" amid market disruption.
Current Price (Close)
After Hours
52-Wk High
$103.00
52-Wk Low
$46.36
Market Cap
$11.44B
P/S Ratio
9.24
User Holdings
Kerry Grinkmeyer
3 Clear Investor Takeaways
Yes, with conviction but important caveats. Rubrik is the fastest-growing cybersecurity company at 48% revenue growth YoY, sitting at the intersection of data protection, cybersecurity, and enterprise AI. From today's price of $57.17, our moderate case projects $115 by January 2029 — delivering over 100% ROI. However, the company is still GAAP unprofitable with a -31% profit margin, requiring patience.
Among pure-play data security and cyber resilience companies, Rubrik stands alone. CrowdStrike and Palo Alto Networks are larger but growing at only 15-20%. Rubrik at 48% growth is in a different league. At P/S of 9.24 (down from 18x earlier), the valuation has become much more attractive. For investors seeking the highest growth rate in cybersecurity, Rubrik is the clear choice.
BUY. The stock is trading 45% below its 52-week high of $103, creating an attractive entry point. Q4 earnings on March 12 provide a near-term catalyst. Current holders should HOLD their 1,300-share position. New investors should initiate with a stop-loss at $46, just below the 52-week low. The 100% ROI goal from $57.17 requires ~$114 by Jan 2029 — achievable under moderate assumptions.
Investment Score
72 / 100
BUY with conviction for growth investors. Fastest-growing cybersecurity name at 48% revenue growth. Valuation compressed to most attractive level since IPO. Meets 100% ROI target under moderate assumptions, but path to GAAP profitability remains the key risk to monitor.
Core Financial Health
Profitability
Profit margin -31.49%, operating margin -21.56% — but losses narrowing rapidly from -80% to -20% over 2 years. Gross margin excellent at 79%.
Liquidity
Current ratio 1.78, $1.6B cash ($8.01/share) — exceeds negative book value. Long runway to reach profitability.
Solvency
Total debt $1.17B vs $1.6B cash — net cash positive. Negative book value (-$2.62/share) from accumulated losses.
Efficiency
Revenue per share $6.19 and improving rapidly. FCF margin 23% — remarkable for a GAAP-unprofitable company.
GAAP operating losses have narrowed dramatically from -80% to -20% over 2 years
Trend-Focused Valuation Analysis
| Metric | Current | Historical Avg | Industry | Signal |
|---|---|---|---|---|
| Trailing P/E | 28.39 | N/A | 45-60 | Attractive |
| Forward P/E | 588.24 | N/A | 35-50 | Elevated |
| Price/Sales | 9.24 | ~14.0 | 12-20 | Discount |
| EV/Revenue | 9.18 | ~14.5 | 12-18 | Attractive |
| Price/Book | N/A | N/A | 8-15 | Neg. Equity |
| ROE | N/A | N/A | 15-25% | Pre-profit |
| Current Ratio | 1.78 | 1.5-2.0 | 1.5-2.5 | Healthy |
Key Insight: Rubrik's P/S ratio has compressed from 18x to 9.24x — the most attractive valuation since its IPO. While the forward P/E appears extreme at 588x, this reflects the transition from losses to minimal profitability. As earnings scale, this ratio will normalize rapidly. The trailing P/E of 28.39 is actually reasonable for a 48% growth company.
3-Year Revenue CAGR + EPS CAGR
Kerry's Rule of 40 Score
Revenue growth is the primary driver. EPS is transitioning from losses to profitability — the improvement trajectory adds ~15-20 points. Combined score of 52 well exceeds the 40 threshold. PASSES.
Margin Expansion: Beyond revenue growth, gross margins are improving (79%+) and operating losses are narrowing dramatically. GAAP EBIT has improved from -80% to -20% in two years. FCF margin of 23% demonstrates the underlying unit economics are strong. As revenue scales past $2B, operating leverage should drive rapid margin expansion.

Cybersecurity, Data Protection & Enterprise AI
Cybersecurity Market
$300B
by 2030
The total cybersecurity market is projected to reach $300B by 2030, driven by increasing cyber threats, regulatory requirements, and digital transformation.
Data Protection & Resilience
$50B
25% CAGR
Rubrik's core market — data protection and cyber resilience — is a $50B opportunity growing at 25% annually. Zero-trust data security is becoming mandatory.
Enterprise AI Security
$30B
Emerging
AI-driven security tools represent a $30B emerging opportunity. Rubrik's AI-powered threat detection and data classification create a strong competitive moat.
Rubrik's total addressable market is approximately $80 billion across cybersecurity, data protection, and AI security. At $1.2B in trailing revenue, the company has captured less than 2% of its opportunity — leaving an enormous runway for growth. The company's subscription ARR is growing at record pace, and the shift to cloud-native data protection creates a multi-year tailwind.
Cybersecurity Competitive Landscape
| Company | Mkt Cap | Rev Growth | P/S | Gross Margin | Profitable? |
|---|---|---|---|---|---|
| Rubrik (RBRK) | $11.4B | 48% | 9.24 | 79% | No |
| CrowdStrike (CRWD) | $429B | 15% | 22 | 75% | Yes |
| Palo Alto (PANW) | $165B | 14% | 15 | 74% | Yes |
| Zscaler (ZS) | $164B | 23% | 14 | 78% | No |
| Cloudflare (NET) | $195B | 25% | 18 | 77% | No |
Standout Finding: Rubrik offers the highest revenue growth rate (48%) at the lowest P/S multiple (9.24) among major cybersecurity peers. CrowdStrike trades at 22x sales with only 15% growth. This growth-to-valuation ratio makes Rubrik the most compelling risk-reward in the sector.

Conservative / Moderate / Aggressive through Jan 2029
Conservative
30% revenue growth, gradual margin improvement, P/S compression to 7x
Moderate (Base)
35% revenue growth, operating leverage kicks in, P/S stable at 8-9x
Aggressive
40%+ revenue growth, faster profitability, P/S re-rates to 10-12x
Does the base case reach 2× today's price of $57.17? Target: $114.34. Base case projects $115 — that's 2.01×.
YES — meets the target, but just barely. This stock qualifies under moderate assumptions.

3-Year Investment Risk Summary
12-Mo Volatility
~65%
High
Est. Beta vs S&P
1.5-1.8
Above Avg
Max Drawdown (1Y)
-45%
Severe
Sharpe Ratio
~0.4
Moderate
Profitability Timeline (High)
Still GAAP unprofitable with -31% profit margin. Path to sustained profitability is the key uncertainty.
Rising Short Interest (Medium)
Short interest increased from 11.89M to 14.17M shares (9.51% of float). Bears are building positions.
SBC Dilution (Medium)
Implied shares outstanding (200M) vs basic (152M) — 32% potential dilution from stock-based compensation.
Competitive Pressure (Medium)
CrowdStrike, Palo Alto, and Zscaler are expanding into data protection. Larger players have more resources.
Valuation Sensitivity (Medium)
At P/S 9.24, any growth deceleration below 30% could trigger significant multiple compression.
Macro/Spending Cuts (Low-Med)
Enterprise IT budget tightening could slow deal cycles. Longer AI security deal cycles already noted.
Moderate confidence. Revenue growth trajectory is highly predictable, but the path to GAAP profitability and the impact of rising short interest introduce meaningful uncertainty into price projections.
Business Model, Management & Competitive Position
Rubrik provides cloud data management and security solutions. The company makes money through subscription-based software that helps enterprises protect, manage, and recover their data across cloud, edge, and on-premises environments. The shift to subscription ARR creates predictable, recurring revenue with high gross margins (79%+). Rubrik sits at the intersection of three powerful trends: cybersecurity, data protection, and enterprise AI.
CEO Bipul Sinha is a co-founder with a strong track record of execution. He previously served as a partner at Lightspeed Venture Partners. Insider ownership at 2.58% is moderate but typical for a post-IPO company. Institutional ownership at 78.52% signals strong institutional confidence. Neuberger Berman recently increased its position, a positive signal.
Rubrik is the category leader in data security and cyber resilience — the only pure-play company at this scale. Wedbush notes 'No Lost Deals' amid market disruption. While CrowdStrike and Palo Alto are expanding into data protection, Rubrik's head start and specialized focus give it a meaningful moat. The company's zero-trust data security architecture is increasingly viewed as essential.
Rubrik is investing heavily in AI-powered security features including automated threat detection, anomaly identification, and intelligent data classification. The company's Ruby AI assistant and Rubrik Security Cloud platform represent next-generation capabilities. R&D spending is significant but appropriate for a company at this growth stage. The AI security opportunity adds ~$30B to the TAM.
Cybersecurity regulation is a tailwind for Rubrik. Increasing data protection requirements (GDPR, CCPA, SEC cyber disclosure rules) drive enterprise spending on solutions like Rubrik's. Geopolitical tensions and rising state-sponsored cyberattacks further accelerate demand. No significant regulatory headwinds identified.
Cybersecurity spending is relatively recession-resistant — enterprises cannot afford to cut security budgets. However, longer deal cycles in AI security have been noted. Interest rate sensitivity is moderate; as a growth stock, RBRK benefits from lower rates. The current macro environment of elevated cyber threats and AI adoption is strongly supportive of Rubrik's business.
Call to Action — Investor Summary
BUY — Fastest-growing cybersecurity name, trading at most attractive valuation since IPO. 45% below 52-week high creates compelling entry.
Stop-Loss: $46.00 (below 52-week low). Position sizing: 5-7% of portfolio for high-conviction growth investors.
Bullish Confirmation: Break above $62 (50-day MA) would confirm momentum. Watch Q4 earnings on March 12 for growth acceleration signals.
Management lowers growth guidance below 30%
Significant miss on Q4 FY2026 earnings (March 12)
Break below $46 on high volume
Acceleration in insider selling
Subscription ARR growth deceleration below 40%
AI-Powered Audio Analysis by Samantha, BUSI Stock Analyst

Samantha breaks down Rubrik's position as the fastest-growing cybersecurity company, the Q4 earnings catalyst, the compelling valuation reset, and what the data says about the path to $115 by 2029.
Duration: ~12 minutes | Generated by Samantha, Best of Us Investors AI Analyst