Based on the ongoing claims that comprehensive income measures financial performance better than net income, thus enhance the transparency and usefulness of financial statements, International Accounting Standard No.1 (IAS 1) allows reporting comprehensive income in a primary and separate financial statement. From this point forth, we compare the usefulness of comprehensive income with net income in terms of financial performance proxied by stock price, stock returns and operating cash flows. Using a sample of listed companies in Turkey, we find some evidence that comprehensive income is a better measurement than net income, especially explaining stock price and market returns. However, the association between comprehensive income and stock price is negative. In that sense, our findings are consistent with previous researches arguing that investors find the financial information in comprehensive income is more volatile, risky, transitory and incomplete than net income, resulting in decreased stock price.