Q.S.I Co., LTD. (KOSDAQ:066310)

South Korea · Delayed Price · Currency is KRW

7,410.00

-60.00 (-0.80%)

Oct 23, 2026, 3:30 PM KST

Revenue by Segment

Financials in millions KRW. Fiscal year is January - December.

Millions KRW. Fiscal year is Jan - Dec.

Fiscal Year	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021	FY 2020	FY 2019	FY 2018	FY 2017	FY 2016
Period Ending	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021	Dec '20 Dec 31, 2020	Dec '19 Dec 31, 2019	Dec '18 Dec 31, 2018	Dec '17 Dec 31, 2017	Dec '16 Dec 31, 2016
Optical Semiconductor Business	23.28B	21.36B	18.69B	22.70B	29.38B
Total	23.28B	21.36B	18.69B	22.70B	29.38B

Revenue by Geography

Financials in millions KRW. Fiscal year is January - December.

Millions KRW. Fiscal year is Jan - Dec.

Fiscal Year	FY 2023	FY 2022	FY 2021	FY 2020	FY 2019	FY 2018	FY 2017	FY 2016
Period Ending	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021	Dec '20 Dec 31, 2020	Dec '19 Dec 31, 2019	Dec '18 Dec 31, 2018	Dec '17 Dec 31, 2017	Dec '16 Dec 31, 2016
South Korea	2.10B	3.18B	7.84B
United States of America	1.48B	2.10B	4.10B
China	11.75B	13.94B	14.09B
Europe	2.89B	2.84B	2.82B
Other	463.41M	636.26M	534.71M
Total	18.69B	22.70B	29.38B