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Long-term Investments (Tables)

12 Months Ended

Dec. 31, 2025

Long-term Investments

Schedule of changes in the Group's long-term investments


		Equity Securities						Equity Securities With
		Without Readily						Readily Determinable
		Determinable Fair Values			Equity Method			Fair Values			Total

		(In US$ thousands)
Balance at December 31, 2022		$	196,579		$	557,501		$	239,550		$	993,630
Investments made/transfers from prepayments			70,864			303,845			—			374,709
Income from equity method investments, net			—			13,392			—			13,392
Dividend declared from equity method investments			—			(4,683)			—			(4,683)
Disposal of investments			(3,463)			(14,250)			—			(17,713)
Changes from measurement alternative to consolidation (Note 6)			(43,988)			—			—			(43,988)
Reclassification of equity investment with readily determinable fair value to equity-method investment			—			153,407			(153,407)			—
Impairment on investments			(25,706)			—			—			(25,706)
Fair value change through earnings			10,877			—			32,125			43,002
Currency translation adjustment			(3,873)			(8,384)			—			(12,257)
Balance at December 31, 2023			201,290			1,000,828			118,268			1,320,386
Investments made/transfers from prepayments/other non-current assets			136,985			25,838			—			162,823
Loss from equity method investments, net			—			(12,170)			—			(12,170)
Dividend declared from equity method investments			—			(10,269)			—			(10,269)
Disposal of investments			(2,228)			(21,811)			—			(24,039)
Impairment on investments			(38,689)			—			—			(38,689)
Fair value change through earnings			—			—			18,564			18,564
Currency translation adjustment			(1,383)			(26,024)			—			(27,407)
Balance at December 31, 2024			295,975			956,392			136,832			1,389,199
Investments made/transfers from prepayments/other non-current assets			357			186,038			—			186,395
Income from equity method investments, net			—			76,666			—			76,666
Dividend declared from equity method investments			—			(12,807)			—			(12,807)
Disposal of investments			(522)			(23,460)			—			(23,982)
Impairment on investments			(5,972)			—			—			(5,972)
Fair value change through earnings			—			—			21,258			21,258
Currency translation adjustment			1,854			30,735			—			32,589
Balance at December 31, 2025		$	291,692		$	1,213,564		$	158,090		$	1,663,346

Schedule of the total carrying value of the equity investments accounted for under the measurement alternative


		Cumulative Results
		(In US$ thousands)
Initial cost basis		$	824,481
Upward adjustments			92,736
Downward adjustments			(618,408)
Foreign currency translation			(2,834)
Total carrying value at December 31, 2024		$	295,975

Initial cost basis		$	824,316
Upward adjustments			92,736
Downward adjustments			(624,380)
Foreign currency translation			(980)
Total carrying value at December 31, 2025		$	291,692

Schedule of the carrying amount and fair value of the marketable security


					Gross			Gross
		Cost			Unrealized			Unrealized			Fair
		Basis			Gains			Losses			Value

		(In US$ thousands)
Didi		$	142,000		$	—		$	(5,168)		$	136,832
December 31, 2024		$	142,000		$	—		$	(5,168)		$	136,832

Didi		$	142,000		$	16,090		$	—		$	158,090
December 31, 2025		$	142,000		$	16,090		$	—		$	158,090

Summary of condensed financial information on equity method investments


		Year ended December 31,
		2023			2024			2025

		(In US$ thousands)
Operating data:
Revenue		$	850,102		$	744,438		$	724,635
Gross profit		$	298,736		$	159,383		$	248,742
Income (loss) from operations		$	12,153		$	(35,142)		$	261,453
Net income (loss)		$	8,188		$	(72,168)		$	226,200
Net income (loss) attributable to the investees’ shareholders		$	9,856		$	(68,129)		$	227,062


		As of December 31,
		2024			2025

		(In US$ thousands)
Balance sheet data:
Current assets		$	1,833,099		$	2,105,598
Non-current assets		$	2,770,207		$	3,388,111
Current liabilities		$	1,310,409		$	1,297,642
Long-term liabilities		$	4,230		$	168,023
Non-controlling interests		$	(4,121)		$	(2,387)