my wife is divorcing me after 5 years am I m entitled to her investments she had prior to our marriage

Minnesota is an equitable distribution state that recognizes the premarital property of the parties as "separate" from their marital property. As a general proposition, each party retains their respective "separate" property in divorce. There are some exceptions to this rule, but that's the general rule. Consult an attorney to discuss the specifics of your case.