# Legging-out of Spreads

## Why might closing only one side of an Iron Condor or Iron Butterfly actually increase risk and utilize additional trading funds?

Both an Iron Condor and Iron Butterfly involve simultaneously opening a Credit Call Spread and a Credit Put spread. The margin requirement of both strategies is the width of *either* the Call or Put Spread (the wider spread if they are not equal). Therefore, to open an Iron Condor or Iron Butterfly an account must have sufficient trading funds to cover the margin requirement, less the net credit received from selling to open the position.

For example, if an Iron Condor with equal $1 wide spreads is sold to open at $0.45 ($45 credit) then the margin requirement is $100 and the available funds required (or the theoretical max loss) is $55 ($100-$45).

But, for example, if only one side (the call or put spread) of the Iron Condor is closed for $0.05 ($5 debit) the margin requirement remains at $100 (the width of the remaining spread). However, the remaining credit is now only $40 ($45-$5) and therefore the available funds required (or the theoretical max loss) is now $60 ($100-$40).

So, while splitting and legging out of the spreads of an Iron Condor or Iron Butterfly can certainly provide benefits such as increasing potential profits prior to expiration, these opportunities should be carefully considered along with the potential risks highlighted above.


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