MongoDB, Inc. (MDB) vs Roblox Corporation (RBLX)
A side-by-side comparison of MongoDB, Inc. and Roblox Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 31, 2026. Differences are shown without an overall score or investment verdict.
MDB
MongoDB, Inc.
$337.48TechnologyDelayed quote: Jul 31, 2026, 4:00 PM EDT
RBLX
Roblox Corporation
$35.60TechnologyAt close: Jul 31, 2026, 4:00 PM ET
Total return — MDB vs RBLX
growth of $100 · dividends reinvested · last 5yMDB +16.8%RBLX -48.8%MDB compounded faster
MDB RBLX
MDB vs RBLX: by the numbers
- •MDB is the larger company ($27.14B vs $25.49B market cap).
- •Both run net losses; MDB's is the smaller (-1.12% vs -17.60% net margin).
Metrics side by side
Valuation
| Metric | MDB | RBLX |
|---|---|---|
| Forward P/E | 67.67 | N/A |
| P/S ratio | 10.22 | 4.49 |
| P/B ratio | 9.06 | 167.87 |
| FCF yield | 2.25% | 7.12% |
Profitability
| Metric | MDB | RBLX |
|---|---|---|
| Gross margin | 71.97% | 78.94% |
| Operating margin | -4.16% | -20.72% |
| Net margin | -1.12% | -17.60% |
| ROE | -0.99% | -658.31% |
| ROIC | -4.42% | -26.81% |
Growth (annualized)
| Metric | MDB | RBLX |
|---|---|---|
| Revenue CAGR (5Y) | 32.32% | 32.30% |
| FCF CAGR (5Y) | N/A | 25.32% |
| Total return CAGR (5Y) | -1.36% | -14.29% |
Frequently asked
- Which has grown faster, MDB or RBLX?
- Over the past five years, MDB grew revenue faster — MDB at a 32.32% CAGR versus RBLX at 32.30%.
- How have MDB and RBLX total returns compared?
- Over the past 5 years, MDB delivered -1.36% and RBLX delivered -14.29% annualized total return. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
MongoDB P/E ratioRoblox P/E ratioMongoDB dividend yieldRoblox dividend yieldMongoDB ROERoblox ROEMongoDB operating marginRoblox operating marginMongoDB revenue growthRoblox revenue growthMongoDB free cash flowRoblox free cash flow
MongoDB & Roblox appear in these rankings
Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified July 31, 2026.