CLOSE: UNG Naked Put +10.1%

On 5/22/08 I entered the trade as follows:
SOLD UNG JUN 08 52 PUT @ $0.92 credit
Exit order set at 80% profit at $0.18 debit.
Stop loss set to twice credit at $1.84 debit.

Today my exit order was triggered:
BOT UNG 100 JUN 08 52 PUT @ $0.20 debit

0.92-0.20/7.15 margin risk= 10.1% ROI in 13 days