SPX (June 2011)
500-600 Call Spread (short, collect prem)
1,500- 1,400 Put Spread (short, collect prem)
Bid 185.70
Mid 195.65
Ask 205.60
Assuming both legs end up ITM. At the Mid, represents interest of 3.53% for the 227 days to expiry. Way too high, a box spread would be much...