This message is being thrown by Struts as it's trying to process your JSP. It's saying you've referred to a bean named displaySharesToFundForm that doesn't exist. Struts will only instantiate the bean associated with the action. So, if you have an html:form tag with action="myAction", when you define the mapping for "myAction", you must specify "displaySharesToFundForm" as the name associated with that action.
If you still can't find the problem, show us your JSP, and the relevant portions of your struts-config.xml file. Showing us the code in your Action class doesn't help.