Inquiry lists for financial interests are submitted, negotiated and traded between investors and dealers over a network or networks. An investor interface for display is provided to an investor. A dealer interface for display is provided to a plurality of dealers. The investor can create an inquiry list via the investor interface containing a plurality of inquiries for a corresponding plurality of different financial interests and can send a message containing the inquiry list to selected dealer(s) where an established relationship exists between said investor and dealers. The dealer(s) can provide respective responses to the message, the response containing respective offers/bids on the plurality of inquiries contained in the inquiry list via the dealer interface. The respective offers/bids are displayed in the inquiry list on the investor interface. The investor may then select one of the respective dealer offers/bids for each inquiry list line item via the investor interface.