In this study we use a unique dataset to examine whether professional and nonprofessional investors use different online quarterly financial information when making investment decisions, and whether the online information they use depends on whether they are researching a new investment or evaluating a current investment. Our results suggest professional investors prefer to view PDF-formatted quarterly reports and tend to rely directly on the financial statements compared to nonprofessional investors who prefer to view HTML-formatted reports and have a tendency to rely more on management's discussion of the quarter's results. Our results also suggest that for nonprofessional investors, investment familiarity (i.e., whether they are evaluating a current investment or researching a new investment) strongly impacts the type of financial information they view within a firm's quarterly reports. Our results have implications for the design of experimental studies, and provide information useful to managers, financial report users, standard setters, and researchers as they attempt to better understand the types of information that professional and nonprofessional investors use when making investment decisions.