Interactive Brokers Group Inc (IBKR)vsCarMax Inc (KMX)
IBKR
Interactive Brokers Group Inc
$84.42
+0.85%
FINANCIAL SERVICES · Cap: $143.52B
KMX
CarMax Inc
$40.34
+1.08%
CONSUMER CYCLICAL · Cap: $5.66B
Smart Verdict
WallStSmart Research — data-driven comparison
CarMax Inc generates 331% more annual revenue ($27.76B vs $6.45B). IBKR leads profitability with a 16.1% profit margin vs 0.9%. KMX appears more attractively valued with a PEG of 0.38. IBKR earns a higher WallStSmart Score of 64/100 (C+).
IBKR
Buy64
out of 100
Grade: C+
KMX
Buy52
out of 100
Grade: C-
Intrinsic Value Comparison
Multi-model valuation · Graham Formula
Intrinsic value data unavailable for IBKR.
Margin of Safety
+83.0%
Fair Value
$270.07
Current Price
$40.34
$229.73 discount
Key Strengths & Concerns
Side-by-side fundamental analysis
Key Strengths
Strong operational efficiency at 76.8%
Conservative balance sheet, low leverage
Large-cap with strong market position
Every $100 of equity generates 24 in profit
16.8% revenue growth
Earnings expanding 21.6% YoY
Growing faster than its price suggests
Reasonable price relative to book value
Areas to Watch
Expensive relative to growth rate
Premium valuation, high expectations priced in
Weak financial health signals
Distress zone — elevated risk
ROE of 4.1% — below average capital efficiency
0.9% margin — thin
Operating margin of 1.8%
Comparative Analysis Report
WallStSmart ResearchBull Case : IBKR
The strongest argument for IBKR centers on Operating Margin, Debt/Equity, Market Cap. Profitability is solid with margins at 16.1% and operating margin at 76.8%. Revenue growth of 16.8% demonstrates continued momentum.
Bull Case : KMX
The strongest argument for KMX centers on PEG Ratio, Price/Book. PEG of 0.38 suggests the stock is reasonably priced for its growth.
Bear Case : IBKR
The primary concerns for IBKR are PEG Ratio, P/E Ratio, Piotroski F-Score.
Bear Case : KMX
The primary concerns for KMX are Altman Z-Score, Return on Equity, Profit Margin. Debt-to-equity of 2.75 is elevated, increasing financial risk. Thin 0.9% margins leave little buffer for downturns.
Key Dynamics to Monitor
IBKR profiles as a growth stock while KMX is a value play — different risk/reward profiles.
IBKR carries more volatility with a beta of 1.32 — expect wider price swings.
IBKR is growing revenue faster at 16.8% — sustainability is the question.
Monitor CAPITAL MARKETS industry trends, competitive dynamics, and regulatory changes.
Bottom Line
IBKR scores higher overall (64/100 vs 52/100), backed by strong 16.1% margins and 16.8% revenue growth. KMX offers better value entry with a 83.0% margin of safety. Both earn "Buy" and "Buy" ratings respectively — the choice depends on your investment horizon and risk tolerance.
This analysis is generated from publicly available financial data. Not financial advice.
Interactive Brokers Group Inc
FINANCIAL SERVICES · CAPITAL MARKETS · USA
Interactive Brokers Group, Inc. is a global automated electronic broker. The company is headquartered in Greenwich, Connecticut.
CarMax Inc
CONSUMER CYCLICAL · AUTO & TRUCK DEALERSHIPS · USA
CarMax is a used vehicle retailer based in the United States. It operates two business segments: CarMax Sales Operations and CarMax Auto Finance.
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