Save on every dollar leveraged
Let's talk about borrowing. Cheap borrowing. BoxSpreads scans listed option chains to build cash-settled box spreads, where funding near market rates is available to anyone with an IBKR account, not just the desks who already know how to build one.
Three steps, one order type you never have to build yourself.
Set size and term
Pick an amount and a term — monthly, quarterly, or annual. BoxSpreads maps it to the nearest liquid expiry.
BoxSpreads builds the box
It screens the SPX options chain for the tightest spread that fits your size.
Legs fill in your account
Each leg is worked and filled individually for best execution.
SPX
SPX options have the structure and liquidity that make cash-settled box spreads practical at scale.
Cash-settled
No assignment risk at expiry, and no round-trip commissions on the underlying.
European-style
Can't be exercised early, so the structure can't be broken before its term.
Deep and liquid
Tight bid/ask on every strike BoxSpreads needs, so fills land close to mid.
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