Trade Parameters
SPX
S&P 500 Index
ES
E-mini Futures
Current Fed Funds Rate
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Trade Summary
Order Instructions
Show Yields:
§1256: 39.6% rate
Great Fill
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Fair Fill
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Bad Fill
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📊 BOX Spread vs. Treasury Comparison
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Your BOX Yield
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Treasury Yield
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Tax Treatment: BOX spreads (§1256): 60/40 rule + 9% MA state = ~39.6% rate.
Treasury: Federal only (state-exempt) = ~40.8% rate.
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After-tax advantage
Box Strikes
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Box Width
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Contracts
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Tick Size
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Liquidity
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Days to Expiry
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Total Investment (Fair)
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Return at Expiration
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Commission (4 legs)
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Box Width Comparison
Wider boxes = fewer contracts & less commission, but potentially lower liquidity
| Width | Strikes | Contracts | Fair Fill | Yield (Fair) | Commission | Liquidity |
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Custom Box Analysis
Order Instructions
Current Fed Funds Rate
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Yield at Various Fill Prices
Lower fill price = higher yield (you pay less to receive the same return)
Show Yields:
§1256: 39.6% rate
Price Range:
±5 ticks
| Fill Price | Label | Total Cost | Profit | Annualized Yield |
|---|
Theoretical Fair Value
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Days to Expiry
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Tick Size
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Commission (4 legs)
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Return at Expiration
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Enter trade parameters and click Calculate
to see BOX spread details
to see BOX spread details