QSI Co

QSI Co Diluted EPS

The Diluted Earnings per Share of QSI Co (066310.KQ) as of Oct 21, 2026 is 304.06 KRW. In the previous year, Diluted Earnings per Share was 393.22 KRW — a change of -22.67% (lower).

Diluted EPS

304.06KRW

YoY

-22.67%

Last updated:

Diluted Earnings per Share of QSI Co is 2025 304.06 KRW. Diluted Earnings per Share of QSI Co was 2024 393.22 KRW. It decreases by -22.67% lower compared to the previous year.

The QSI Co Diluted EPS history

  • 3 Years

  • 10 Years

  • 25 Years

  • Max

Diluted EPS
Date
Diluted EPS
Jan 1, 2018
-43.69 KRW
Jan 1, 2019
133.45 KRW
Jan 1, 2020
16.42 KRW
Jan 1, 2021
188.38 KRW
Jan 1, 2022
847.05 KRW
Jan 1, 2023
327.72 KRW
Jan 1, 2024
393.22 KRW
Jan 1, 2025
304.06 KRW
The QSI Co Diluted EPS history
YEARDiluted EPSYoY
304.06KRW-22.67%
393.22KRW+19.98%
327.72KRW-61.31%
847.05KRW+349.65%
188.38KRW+1,047.42%
16.42KRW-87.70%
133.45KRW-405.42%
-43.69KRW-147.77%
91.47KRW-46.66%
171.47KRW+2.43%
167.39KRW-56.52%
385.02KRW—

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QSI Co Stock analysis

What does QSI Co do? Q.S.I Co., Ltd. manufactures and sells semiconductor laser and optical semiconductor products under the brand name QSI Laser Diode. The company produces LDs for power tools, laser modules, barcode scanners, laser beam printers, optical pickup units for DVDs and CDs, medical equipment, sensors, and optical communications. Its clients include Fuji Xerox, Panasonic, Samsung, and Stabila, purchasing these products for integration into their devices and systems. The firm distributes its products domestically and internationally, focusing on the manufacturing and sale of specialized optical components for various industries. Q.S.I Co., Ltd. generates revenue through the sale of its branded semiconductor laser products to major electronics manufacturers and equipment providers. The company's product portfolio targets applications in consumer electronics, medical devices, and industrial tools, with key customers like Samsung and Panasonic driving demand. By supplying components such as LDs for optical pickup units in media players and sensors for industrial applications, QSI meets the needs of established brands in the technology sector. The firm's business model relies on direct sales to clients including Fuji Xerox, Panasonic, Samsung, and Stabila, who incorporate QSI Laser Diode products into their end products. These customers operate in diverse sectors such as office equipment, consumer electronics, and industrial tools, creating consistent demand for QSI's specialized optical semiconductor solutions. The company's focus on both domestic and international markets ensures a broad customer base across multiple industries. QSI Co is one of the most popular companies on Eulerpool.

Frequently Asked Questions about QSI Co stock

Diluted Earnings per Share of QSI Co is 304.06 KRW in 2025.

Diluted Earnings per Share of QSI Co changed from 393.22 KRW to 304.06 KRW, representing a -22.67% change. The value is lower than the previous year.

On Eulerpool you can find the complete historical development of Diluted Earnings per Share QSI Co since 2006 – with annual values, charts, and detailed analysis.

Diluted EPS accounts for all potential shares from options, warrants, and convertible securities. It provides a more conservative per-share earnings measure.

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Income Statement — QSI Co

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