In a network for acquiring/discharging short sale stock locates, a server provides for displaying a graphic user interface (GUI) that includes: watchlist; pending locate; history; and inventory screens. Client devices of institutions and others seeking to sell stock locates transmit availability to the server. Investor client devices that enter symbol(s) corresponding to the availability have displayed, in their watchlist, data relating to the available locate including a rate, and can request particular locate share quantities using a locate button. The acquired locate shares are removed from the availability, and are listed in the inventory screen of the investor. The investor can request/enter a rate different than the institution's rate; and can offer for sale any unused or unneeded locate shares in his/her inventory at any time to the others using the pending locate screen, and can receive offers, which accepted or rejected offers appear in the history screen.