Arena Pharmaceuticals, Inc. (ARNA)

[windansea]

According to my broker (Interactive Brokers), the ARNA shares in my margin account would be available for shorting only if I was actually USING MARGIN myself. As long as I am not borrowing money from the broker, they will not "borrow" my shares to make them available for shorting. I do not know if this rule applies to all brokers, or this is just I.B.'s company policy.