Financial intermediation plays a central role in connecting capital demanders, i. e. firms, and capital suppliers, i. e. investors. My essays focus on two types of financial intermediaries, namely investment banks, who provide a variety of services for firms and institutional investors, and sell-side security analysts, who analyze and provide information about firms, mainly, to institutional investors. The first essay studies security analysts’ cognitive biases in issuing earnings forecasts; the second essay studies analysts’ capital expenditure forecasts; and, the third essay studies the underwriting relationship value between investment banks and their client firms