thanks for your reply. i'm still confised though: i understand the bonds being issued are not neccesarily CTD for the future, so there will not be a demand from futures market deliverers per se. but why would there be a high demand for the buy side of futures contracts, yet no demand for the cash bonds at issuance ?
ie if people want delivery of the CTD in the futures market, why don;t they want any cash bonds at all ? whats the differnce?