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

South Korea · Delayed Price · Currency is KRW

6,890.00

+160.00 (2.38%)

Jul 21, 2026, 3:30 PM KST

-15.15% (1Y)

Market Cap	60.92B -15.1%
Revenue (ttm)	23.79B +8.0%
Net Income	4.57B +154.6%
EPS	508.41 +153.4%
Shares Out	8.84M
PE Ratio	13.55
Forward PE	n/a
Dividend	100.00 (1.49%)
Ex-Dividend Date	Dec 29, 2025

Volume	49,289
Open	6,600.00
Previous Close	6,730.00
Day's Range	6,570.00 - 7,020.00
52-Week Range	6,610.00 - 22,750.00
Beta	0.78
Analysts	n/a
Price Target	n/a
Earnings Date	May 28, 2026

About Q.S.I Co., LTD.

Q.S.I Co., LTD. develops, manufactures, and sells red and infra-red laser diodes in South Korea and internationally. The company also provides foundry services, that includes Epi wafers, wafer foundry services, and package services. Its laser diodes are used in power tools, medical, motion recognition, laser printers, lidar, and various sensors. The company was founded in 2000 and is based in Cheonan-si, South Korea. [Read more]

Industry Semiconductors

Sector Technology

Founded 2000

Employees 105

Stock Exchange KOSDAQ

Ticker Symbol 066310

Full Company Profile

Financial Performance

In 2025, Q.S.I Co., LTD.'s revenue was 23.28 billion, an increase of 8.98% compared to the previous year's 21.36 billion. Earnings were 2.52 billion, a decrease of -22.67%.

Financial Statements