KOYJ Co

KOYJ Co P/B

Delisted·Sep 14, 2026

The P/B (Price-to-Book Ratio) of KOYJ Co (121850.KQ) as of Oct 15, 2026 is 16.28. In the previous year, P/B (Price-to-Book Ratio) was 1.59 — a change of 924.73% (higher).

P/B

16.28

YoY

924.73%

Last updated:

P/B (Price-to-Book Ratio) of KOYJ Co is 2025 16.28 . P/B (Price-to-Book Ratio) of KOYJ Co was 2024 1.59 . It decreases by 924.73% higher compared to the previous year.

The KOYJ Co P/B history

  • 3 Years

  • 10 Years

  • 25 Years

  • Max

P/B
Date
P/B
Jan 1, 2018
1.26 KRW
Jan 1, 2019
1.02 KRW
Jan 1, 2020
1.17 KRW
Jan 1, 2021
4.32 KRW
Jan 1, 2022
1.02 KRW
Jan 1, 2023
1.30 KRW
Jan 1, 2024
1.59 KRW
Jan 1, 2025
16.28 KRW
The KOYJ Co P/B history
YEARP/BYoY
16.28+924.73%
1.59+22.12%
1.30+27.73%
1.02-76.44%
4.32+269.98%
1.17+14.95%
1.02-19.15%
1.26+45.30%
0.87+32.22%
0.65-8.26%
0.71+8.66%
0.66—

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KOYJ Co Stock analysis

What does KOYJ Co do? KOYJ Co Ltd, identified by the ticker symbol 121850.KQ and ISIN KR7121850002, is a specialized manufacturer operating within the Materials sector, specifically in the Chemicals industry. Headquartered in Chungju, South Korea, the company focuses on the production and sale of light crystal display optical part components. With a workforce of 63 employees, KOYJ has established itself as a niche player in the supply chain for display technology, providing essential optical materials that enhance the performance and durability of liquid crystal displays. The company officially entered the public markets with an initial public offering on September 27, 2012, marking a significant milestone in its corporate development and allowing it to access broader capital resources for operational expansion and research initiatives. The business operations of KOYJ Co Ltd are structured around three distinct and specialized divisions, each addressing a critical aspect of optical component manufacturing. The optical film coating division is responsible for the creation of high-performance optical functional films, hard coating films, adhesive protection films, and cushion sheets. These products are vital for protecting sensitive display surfaces while maintaining optical clarity and structural integrity. The light guide plates division produces light guide plates specifically designed for use in LCD technology. These components are fundamental in directing and distributing light evenly across the display panel, ensuring consistent brightness and visual quality for end-users. The third operational unit, the protection film division, manufactures protection films tailored for LCD panels. These films serve as a crucial barrier against physical damage, scratches, and environmental contaminants during both the manufacturing process and the product's lifecycle. KOYJ Co Ltd distributes its diverse range of optical components to both domestic markets within South Korea and international overseas markets. This dual-market approach allows the company to mitigate regional economic risks and tap into the growing global demand for high-quality display components. By maintaining a focused strategy on optical films and related accessories, KOYJ continues to support the broader electronics industry with reliable and technologically advanced materials. The company's website, http://www.koyj.co.kr/, serves as a primary resource for stakeholders seeking further information on its product specifications, corporate governance, and market presence. Despite its relatively small employee base, KOYJ leverages specialized expertise to meet the precise requirements of the optical display sector, contributing to the efficiency and quality of modern electronic devices. KOYJ Co is one of the most popular companies on Eulerpool.

Frequently Asked Questions about KOYJ Co stock

P/B (Price-to-Book Ratio) of KOYJ Co is 16.28 in 2025.

P/B (Price-to-Book Ratio) of KOYJ Co changed from 1.59 to 16.28, representing a 924.73% change. The value is higher than the previous year.

On Eulerpool you can find the complete historical development of P/B (Price-to-Book Ratio) KOYJ Co since 2006 – with annual values, charts, and detailed analysis.

The Price-to-Book ratio compares a company's market price to its book value. A low P/B may indicate an undervalued stock, while a high P/B could suggest overvaluation or strong growth expectations.

P/B = Stock Price / Book Value per Share

To evaluate P/B (Price-to-Book Ratio)'s, it is essential to compare it with peers in the same industry and sector. On Eulerpool, you can find direct industry comparisons for P/B (Price-to-Book Ratio).

A 'good' varies by industry and company stage. On Eulerpool, you can compare P/B (Price-to-Book Ratio)'s KOYJ Co with sector peers and the industry average to assess whether it is attractive.

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Valuation — KOYJ Co

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