Interactive Brokers Group, Inc. (IBKR) vs Main Street Capital Corporation (MAIN)
A side-by-side comparison of Interactive Brokers Group, Inc. and Main Street Capital Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 28, 2026. Differences are shown without an overall score or investment verdict.
IBKR
Interactive Brokers Group, Inc.
$90.91Financial ServicesDelayed quote: Jul 28, 2026, 4:00 PM EDT
MAIN
Main Street Capital Corporation
$55.32Financial ServicesDelayed quote: Jul 28, 2026, 4:00 PM EDT
Total return — IBKR vs MAIN
growth of $100 · dividends reinvested · last 19yIBKR +1499.0%MAIN +1592.4%MAIN compounded faster
IBKR MAIN
IBKR vs MAIN: by the numbers
- •IBKR is the larger company ($157.10B vs $5.14B market cap).
- •MAIN trades at the lower trailing earnings multiple (11.33 vs 36.91 P/E), one valuation lens rather than an overall verdict.
- •MAIN converts more revenue to profit (58.59% vs 10.14% net margin).
- •IBKR grew revenue faster over the past five years (32.59% vs 16.32% CAGR).
- •MAIN pays the higher dividend yield (7.99% vs 0.35%).
Metrics side by side
Valuation
| Metric | IBKR | MAIN |
|---|---|---|
| P/E ratio | 36.91 | 11.33 |
| Forward P/E | 34.05 | 14.01 |
| P/S ratio | 3.74 | 6.70 |
| P/B ratio | 7.03 | 1.58 |
| PEG ratio | 1.05 | 0.17 |
Profitability
| Metric | IBKR | MAIN |
|---|---|---|
| Gross margin | 93.34% | 100.00% |
| Operating margin | 87.09% | 80.71% |
| Net margin | 10.14% | 58.59% |
| ROE | 19.07% | 13.78% |
| ROIC | 17.47% | 8.64% |
Dividends
| Metric | IBKR | MAIN |
|---|---|---|
| Dividend yield | 0.35% | 7.99% |
| Payout ratio | 14.69% | 77.90% |
Growth (annualized)
| Metric | IBKR | MAIN |
|---|---|---|
| Revenue CAGR (5Y) | 32.59% | 16.32% |
| EPS CAGR (5Y) | 29.60% | 65.11% |
| Total return CAGR (5Y) | 44.39% | 13.87% |
Frequently asked
- Which has the lower trailing P/E, IBKR or MAIN?
- MAIN has the lower trailing P/E: IBKR trades at 36.91 and MAIN at 11.33. P/E is one valuation measure and does not by itself establish which business is cheaper.
- Which has grown faster, IBKR or MAIN?
- Over the past five years, IBKR grew revenue faster — IBKR at a 32.59% CAGR versus MAIN at 16.32%.
- Does IBKR or MAIN pay a bigger dividend?
- IBKR yields 0.35% and MAIN yields 7.99% based on trailing dividends and the latest price.
- Is IBKR or MAIN more profitable?
- MAIN runs the higher net margin — IBKR at 10.14% versus MAIN at 58.59%.
- How have IBKR and MAIN total returns compared?
- Over the past 10 years, IBKR delivered 27.42% and MAIN delivered 13.24% annualized total return. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
Interactive Brokers P/E ratioMain Street Capital P/E ratioInteractive Brokers dividend yieldMain Street Capital dividend yieldInteractive Brokers ROEMain Street Capital ROEInteractive Brokers operating marginMain Street Capital operating marginInteractive Brokers revenue growthMain Street Capital revenue growthInteractive Brokers free cash flowMain Street Capital free cash flow
Interactive Brokers & Main Street Capital 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 28, 2026.