COMPARE · Reviewed August 3, 2026
QLYS vs RBRK
Verdict: Side-by-side breakdown using the Bull Rankings model. QLYS scored 72.0, RBRK scored 56.0 — QLYS leads.
Compare another set
QLYS
Qualys, Inc.
72
$154.89 · $5.5B
fundamentals as of
Score gap
16.0
QLYS leads
RBRK
Rubrik, Inc.
56
$74.74 · $15.4B
fundamentals as of
The model, pillar by pillar (0–100 each)
QLYS
stronger →← stronger
RBRK
94
Qualityreturns · margins · balance sheet
50
85
Growthrevenue & earnings expansion
100
47
Valuevaluation vs sector peers
35
QLYS is stronger on 2 of 3 pillars.
Fundamentals, head-to-head
QLYS
RBRK
$290mC
FCF
$294mC
+10.2%B
Rev
+45.7%A
0.09B+
D/E
—
27.8xB
P/E
—
5.68D
PEG
—
—
P/S
10.8xC
Winner per row is the stronger grade in our model; a tie or a missing value shows no highlight.
Valuation · DCF cross-check
QLYS
RBRK
26% below
Price vs fair valuelower is cheaper
153% above
~-1%/yr
Growth the price implies10-yr FCF · lower = less priced in
~40%/yr
+24%
1-yr DCF upside
-70%
+34%
5-yr DCF upside
-61%
+52%
10-yr DCF upside
-42%
The DCF is a cross-check on intrinsic value, separate from the quality-growth score above.
Model signals
QLYS
Why this score
- Buying back stock
- Durable high returns
RBRK
Why this score
- Diluting shareholders
- Short track record
The companies
QLYSQualys, Inc.
Why now
Software - Infrastructure · market cap $5.5b. 8% off the 52-week high of $167.86. Revenue growing +10%, comfortably above the S&P median. 18 sell-side analysts rate this a Hold with a mean 1-yr target of $131.13 (implying -15% upside).
Moat
Net margin 29% sits well above the S&P median (~11%) — suggests structural pricing advantage or cost discipline competitors can't quickly close. ROE 35% — top-decile capital efficiency. Either pricing leverage, low capital intensity, or aggressive buybacks; the durability story depends on which. FCF converts 144% of net income — earnings translate cleanly into cash, a sign that working capital and capex are well-disciplined.
Risk
Software — competitive moat is durable until it isn't; watch net revenue retention, gross margin trends, and any new market entrant with a fundamentally lower price point.
RBRKRubrik, Inc.
Why now
Software - Infrastructure · market cap $15.4b. Down 25% from 52-week high of $99.75 — deep drawdown territory. Revenue growing +46% — in hypergrowth territory. 26 sell-side analysts publish a mean 1-yr target of $95.23 (implying +27% upside).
Moat
Free cash flow runs well ahead of reported net income — non-cash charges (depreciation, intangible amortization) are holding down GAAP earnings while cash generation stays strong. Software economics — recurring revenue, embedded customer workflows, and high gross margin all compound the moat once a base account is won. Switching costs are the lever.
Risk
P/S 10.8x embeds aggressive forward growth — disappointing top-line guidance would compress the multiple hard. Net margin 4.2% is thin — operating leverage cuts both ways; input-cost inflation or pricing pressure hits the bottom line first. ROE -12% is below the long-run sustainable threshold of ~10% — capital efficiency would need to improve for the equity base to compound at the market rate.
Verdict — model-derived comparison
Generating verdict… typically 5–10 seconds
Not investment advice. The Bull Rankings publishes a quantitative ranking model and accompanying analysis for general informational purposes only. Nothing on this page is a recommendation to buy, sell, or hold any security; nothing is personalized to your circumstances, risk tolerance, or tax situation. Investing carries the risk of loss — invest at your own risk and consider consulting a licensed financial professional before acting on anything you read here. See terms and methodology for full disclosures.