| Summary of Strategic Investments |
The following table summarizes our strategic investments as of December 31, 2023 and 2022: | | | | | | | | | | | | | As of December 31, | | 2023 | | 2022 | | | | | | (in thousands) | | Initial cost | $ | 106,368 | | | $ | 125,564 | | | Cumulative upward adjustments | 147,317 | | | 157,186 | | | Cumulative downward adjustments, including impairments | (58,357) | | | (30,411) | | | Carrying value | $ | 195,328 | | | $ | 252,339 | |
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| Summary of Gain (Loss) on Strategic Investments |
Gains and losses recognized during the periods presented were as follows: | | | | | | | | | | | | | | | | | | | Year Ended December 31, | | 2023 | | 2022 | | 2021 | | | | | | | | (in thousands) | | Gains (losses) recognized on strategic investments sold during the period, net | $ | — | | | $ | 45,935 | | | $ | 27,820 | | | Unrealized gains on strategic investments still held at the reporting date | 1,368 | | | 19,946 | | | 145,010 | | | Unrealized losses, including impairments, on strategic investments still held at the reporting date | (28,423) | | | (1,421) | | | (2,854) | | | Gains (losses) on strategic investments, net | $ | (27,055) | | | $ | 64,460 | | | $ | 169,976 | |
Gains and losses recognized during the periods presented, which are included within other income (expense), net on our consolidated statements of operations, were as follows: | | | | | | | | | | | | | | | | | | | Year Ended December 31, | | 2023 | | 2022 | | 2021 | | (in thousands) | | Gains (losses) recognized on publicly traded equity securities sold during the period, net | $ | 11,046 | | | $ | (22,095) | | | $ | — | | | Unrealized gains (losses) on publicly traded equity securities still held at the reporting date, net | (17,731) | | | (79,214) | | | 122,064 | | | Gains (losses) on publicly traded equity securities, net | $ | (6,685) | | | $ | (101,309) | | | $ | 122,064 | |
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