A method and system to facilitate on-line transactions is presented. An example system, in one embodiment, comprises a content scanner, a security symbol resolver, a web page manipulator, an event detector, and a trading ticket activator. The content scanner may be configured to scan a web page in order to detect security symbol information. The page manipulator may be configured to insert a trading control into the web page to produce a trade-enabled web page. The trading control may be used by users accessing the trade-enabled web page to initiate trades using the trading service associated with the trading control. The system may be provided on a client (e.g., as a browser plug-in) or on a server, as a trading access module associated with a particular web site.