Unfortunately GLD doesn't have options.Quote from powerfade:
Okay! Streettracks Gold, right?
Now... TWS will display that symbol but will not give me the option of getting an options quote... maybe another symbol, although that would be strange - TWS always seems to give you the option of seeing the underlying or the option.
Off to find out.
Btw, 50 call and 45 put is a strangle not a straddle. A straddle would be 45 call and 45 put, or 50 call and 50 put, or to get ATM you would trade 47.5 call and put since the stock is 47.69 now.