Up to the EServer! Please post to this site. It has a powerful relational database engine. It automatically purges out-of-date calls. It supports ISO Latin-1, so we can use accents and diacriticals. It has several easy-to-use search interfaces. It permits us to add, modify or delete our calls with a password. This site is run by many people.

A call is an instrument that gives a trader the right, but not the obligation, to acquire shares at a predefined level known as the striking price when purchased. Traders purchase a call contract when they want a limited risk position and anticipate the underlying stock or index to move higher. The cost for this right of ownership is the premium paid for the call option transacted in the open market.