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Fair Value Measurement (Tables) | 12 Months Ended
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Dec. 31, 2025
Fair Value Measurement |
Schedule of assets measured at fair value on a recurring basis, the respective fair value and the classification by level of input within the fair value hierarchy | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements
​ | ​ ​ ​ | ​ | ​ | ​ ​ ​ | Quoted Prices in | ​ ​ ​ | ​ | ​ | ​ ​ ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Market | ​ | Significant Other | ​ | Significant
​ | ​ | ​ | ​ | ​ | for Identical Assets | ​ | Observable Inputs | ​ | Unobservable Inputs
​ | ​ | Total | ​ | (Level 1) | ​ | (Level 2) | ​ | (Level 3)
​ | ​ | (In US$ thousands)
As of December 31, 2024: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Wealth management products, short term (1) | ​ | $ | 69,947 | ​ | $ | — | ​ | $ | 69,947 | ​ | $ | —
Wealth management products, long term (2) | ​ | ​ | 194,746 | ​ | ​ | — | ​ | ​ | 194,746 | ​ | ​ | —
Equity securities with readily determinable market value (3) | ​ | ​ | 136,832 | ​ | ​ | 136,832 | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 401,525 | ​ | $ | 136,832 | ​ | $ | 264,693 | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of December 31, 2025: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Wealth management products, short term (1) | ​ | $ | 76,917 | ​ | $ | — | ​ | $ | 76,917 | ​ | $ | —
Wealth management products, long term (2) | ​ | ​ | 201,244 | ​ | ​ | — | ​ | ​ | 201,244 | ​ | ​ | —
Equity securities with readily determinable market value (3) | ​ | ​ | 158,090 | ​ | ​ | 158,090 | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 436,251 | ​ | $ | 158,090 | ​ | $ | 278,161 | ​ | $ | —
(1) | Included in short-term investments on the Group’s consolidated balance sheets.
(2) | Included in other non-current assets on the Group’s consolidated balance sheets.
(3) | Included in long-term investments on the Group’s consolidated balance sheets.

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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