Researchers are often interested in knowing what proportion of a company's stock is held by insiders, large investors, institutions, or other shareholders. Here are some resources for finding that information.
Most databases and financial web sites provide only a few years of stock price history. Daily stock price history is available in relatively fewer sources.
Marianne Hageman (St. Paul)
John Heintz (Mpls. & St. Paul)
Andrea Koeppe (Mpls.)