applicable. Investments in equity securities are carried at fair value, if the fair value of the security is readily determinable. Equity investments 

carried at fair value are classified as either trading or available-for-sale securities. Realized and unrealized gains and losses on trading securities and realized gains and losses on available-for-sale securities are included in net income. Unrealized gains and losses, net of deferred taxes, on available-for-sale securities are included in our consolidated balance sheets as a component of accumulated other comprehensive income (loss) ("AOCI"). Trading securities are reported as marketable securities in our consolidated balance sheets. Securities classified as available-for-sale are reported as either marketable securities or other investments in our consolidated balance sheets, depending on the length of time we intend to hold the investment. Investments in equity securities that do not qualify for fair value accounting are accounted for under the cost method. In accordance with the cost method, our initial investment is recorded at cost and we record dividend income when applicable dividends are declared. Cost method investments are reported as other investments in our consolidated balance sheets. 

Our investments in debt securities are carried at either amortized cost or fair value. Investments in debt securities that the Company has the positive intent and ability to hold to maturity are carried at amortized cost and classified as held-to-maturity. Investments in debt securities that are not classified as held-to-maturity are carried at fair value and classified as either trading or available-for-sale. 

Investments classified as trading securities are not assessed for impairment, since they are carried at fair value with the change in fair value included in net income. We review our investments in equity and debt securities that are accounted for using the equity method or cost method or that are classified as available-for-sale or held-to-maturity each reporting period to determine whether a significant event or change in circumstances has occurred that may have an adverse effect on the fair value of each investment. When such events or changes occur, we evaluate the fair value compared to our cost basis in the investment. We also perform this evaluation every reporting period for each investment for which our cost basis has exceeded the fair value in the prior period. The fair values of most of our Company's investments in publicly traded companies are often readily available based on quoted market prices. For investments in nonpublicly traded companies, management's assessment of fair value is based on valuation methodologies including discounted cash flows, estimates of sales proceeds and appraisals, as appropriate. We consider the assumptions that we believe hypothetical marketplace participants would use in evaluating estimated future cash flows when employing the discounted cash flow or estimates of sales proceeds valuation methodologies. The ability to accurately predict future cash flows, especially in developing and emerging markets, may impact the determination of fair