Long-Term Investments

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

6. LONG-TERM INVESTMENTS

As of December 31, 2022 and 2023, the Company held equity investments in several privately-held companies with the carrying value as follows:


	Percentage of Ownership						December 31
	2022			2023			2022		2023
							US$		US$
Non-marketable equity securities:
Cashido Corp . (Cashido)		0.6	%		0.6	%		—		—
Vastview Technology, Corp. (Vastview)		2.9	%		2.9	%		—		—
Kinara, Inc (Kinara)		14.1	%		14.1	%		6,500		6,500

								6,500		6,500
Marketable equity securities:
BIWIN Storage Technology Corp.(BIWIN)		0.3	%		0.3	%		2,767		10,616

								9,267		17,116

In June 2018, the Company invested US$3,000 thousand in the preferred stock of Kinara which is accounted for under the cost method. Kinara, previously known as Deep Vision, is a developer of

low-power

deep-learning processors. In March 2020 and May 2021, the Company invested US$2,000 thousand and

US$

1,500 thousand, respectively, in the preferred stock of Kinara.

In July 2021, the Company invested US$2,041 thousand in the common stock of BIWIN, which is a leading module maker in China focusing on solid state storage devices and is one of our customers and was listed on the Science and Technology Innovation Board of Shanghai Stock Exchange in December 2022. The Company had unrealized holding gains of US$896 thousand and US$8,002 thousand for the years ended December 31, 2022, and 2023, respectively.