From the best options broker Optionsxpress.com
If you have a bullish short-term feeling about Coca Cola Co. (KO) when it is trading at $54.14, you might put on a bull put spread by selling the 55 put for $2.55 and buying the 50 put for $0.85. In this case, the maximum profit would be the $1,700 you received when you initiated the position.
The maximum loss would be the difference between strike prices less the $1,700 credit you received for putting on the trade. In this example, the maximum loss would be $3,300 (((55 – 50) x 1,000) – $1,700). For margin purposes, however, the maximum loss is considered to be the difference between strike prices-in this case $5,000-because that is the amount that must be available should the position reach a maximum loss.
KO trading @ $54.14
10 KO AUG 55 Put @ $2.55
10 KO AUG 50 Put @ $0.85
Credit from Trade
If you like the idea behind the bull put spread, be sure to check out bull call spreads and bear put spreads. These can be comparable strategies depending on your objectives.