(8)  Investments in Available-for-Sale Securities and Other Cost Investments

All marketable equity and debt securities held by the Company are classified as AFS and are carried at fair value generally based on quoted market prices. GAAP permits entities to choose to measure many financial instruments, such as AFS securities, and certain other items at fair value and to recognize the changes in fair value of such instruments in the entity's statements of operations (the "fair value option"). Liberty has elected the fair value option for its AFS securities ("Fair Value Option Securities"). Accordingly, changes in the fair value of Fair Value Option Securities, as determined by quoted market prices, are reported in realized and unrealized gains (losses) on financial instruments in the accompanying consolidated statements of operations.

Investments in AFS securities, the majority of which are considered Fair Value Option Securities and other cost investments, are summarized as follows: