Valuation Update With 7 Day Price Move • May 11
Investor sentiment deteriorates as stock falls 15% After last week's 15% share price decline to ₩2,325, the stock trades at a trailing P/E ratio of 8.3x. Average trailing P/E is 18x in the Electronic industry in South Korea. Total loss to shareholders of 36% over the past three years. Valuation Update With 7 Day Price Move • Apr 14
Investor sentiment improves as stock rises 19% After last week's 19% share price gain to ₩2,650, the stock trades at a trailing P/E ratio of 9.5x. Average trailing P/E is 16x in the Electronic industry in South Korea. Total loss to shareholders of 37% over the past three years. Announcement • Mar 17
RYUK-IL C&S.,Ltd., Annual General Meeting, Mar 27, 2026 RYUK-IL C&S.,Ltd., Annual General Meeting, Mar 27, 2026, at 09:01 Tokyo Standard Time. Location: conference room, 150, haemarugongwon-ro, gyeongsangbuk-do, gumi South Korea Valuation Update With 7 Day Price Move • Mar 04
Investor sentiment deteriorates as stock falls 18% After last week's 18% share price decline to ₩2,535, the stock trades at a trailing P/E ratio of 2.3x. Average trailing P/E is 17x in the Electronic industry in South Korea. Total loss to shareholders of 9.0% over the past three years. Valuation Update With 7 Day Price Move • Feb 11
Investor sentiment deteriorates as stock falls 16% After last week's 16% share price decline to ₩3,445, the stock trades at a trailing P/E ratio of 3.2x. Average trailing P/E is 17x in the Electronic industry in South Korea. Total returns to shareholders of 22% over the past three years. Valuation Update With 7 Day Price Move • Jan 28
Investor sentiment improves as stock rises 25% After last week's 25% share price gain to ₩3,645, the stock trades at a trailing P/E ratio of 3.3x. Average trailing P/E is 17x in the Electronic industry in South Korea. Total returns to shareholders of 30% over the past three years. Valuation Update With 7 Day Price Move • Dec 18
Investor sentiment improves as stock rises 27% After last week's 27% share price gain to ₩2,600, the stock trades at a trailing P/E ratio of 2.4x. Average trailing P/E is 16x in the Electronic industry in South Korea. Total loss to shareholders of 10% over the past three years. New Risk • Nov 24
New minor risk - Share price stability The company's share price has been volatile over the past 3 months. It is more volatile than 75% of South Korean stocks, typically moving 9.9% a week. This is considered a minor risk. Share price volatility indicates the stock is highly sensitive to market conditions or economic conditions rather than being sensitive to its own business performance, which may also be inconsistent. It also increases the risk of potential losses in the short term as the stock tends to have larger drops in price more frequently than other stocks. Currently, the following risks have been identified for the company: Minor Risks Share price has been volatile over the past 3 months (9.9% average weekly change). Market cap is less than US$100m (₩23.1b market cap, or US$15.7m). New Risk • May 29
New minor risk - Share price stability The company's share price has been volatile over the past 3 months. It is more volatile than 75% of South Korean stocks, typically moving 9.0% a week. This is considered a minor risk. Share price volatility indicates the stock is highly sensitive to market conditions or economic conditions rather than being sensitive to its own business performance, which may also be inconsistent. It also increases the risk of potential losses in the short term as the stock tends to have larger drops in price more frequently than other stocks. Currently, the following risks have been identified for the company: Minor Risks Share price has been volatile over the past 3 months (9.0% average weekly change). Market cap is less than US$100m (₩23.4b market cap, or US$17.0m). Announcement • Apr 24
G-TECH Optoelectronics Corporation (TWSE:3149) agreed to acquire Sd Global Vietnam Limited Liability Company from RYUK-IL C&S.,Ltd. (KOSDAQ:A191410) for KRW 14.2 billion. G-TECH Optoelectronics Corporation (TWSE:3149) agreed to acquire Sd Global Vietnam Limited Liability Company from RYUK-IL C&S.,Ltd. (KOSDAQ:A191410) for KRW 14.2 billion on April 22, 2025. A cash consideration of KRW 14.19 billion will be paid by G-TECH Optoelectronics Corporation. As part of consideration, KRW 14.19 billion is paid towards common equity of Sd Global Vietnam Limited Liability Company.
For the period ending December 31, 2024, Sd Global Vietnam Limited Liability Company reported total revenue of KRW 3.83 billion and net loss of KRW 26.07 million. As of December 31, 2024, Sd Global Vietnam Limited Liability Company reported total debt of KRW 706.59 million, total assets of KRW 19.22 billion and total common equity of KRW 18.51 billion. Announcement • Mar 12
RYUK-IL C&S.,Ltd., Annual General Meeting, Mar 28, 2025 RYUK-IL C&S.,Ltd., Annual General Meeting, Mar 28, 2025, at 09:00 Tokyo Standard Time. Location: conference room, 150, haemarugongwon-ro, sandong-eup, gyeongsangbuk-do, gumi South Korea New Risk • Dec 16
New major risk - Financial data availability The company has not reported any financial data. This is considered a major risk. With no or incomplete audited reported financial data, it is virtually impossible to assess the company's investment potential. Currently, the following risks have been identified for the company: Major Risk No financial data reported. Minor Risk Market cap is less than US$100m (₩16.8b market cap, or US$11.7m). New Risk • Nov 26
New major risk - Financial position The company's debt is not well covered by operating cash flow. Operating cash flow to total debt ratio: 10% This is considered a major risk. If the company's operating cash flows are too small relative to the size of their debt, it increases their balance sheet risk. The company has less cash from operations to cover its expenses from servicing large debt and it increases the risk of liquidity issues. It also extends the time it would take for the company to pay back the debt in full, meaning it may not be able to easily pay it all off in a distress scenario. Currently, the following risks have been identified for the company: Major Risk Debt is not well covered by operating cash flow (10% operating cash flow to total debt). Minor Risks Large one-off items impacting financial results. Market cap is less than US$100m (₩18.4b market cap, or US$13.2m). Valuation Update With 7 Day Price Move • Aug 05
Investor sentiment deteriorates as stock falls 16% After last week's 16% share price decline to ₩1,900, the stock trades at a trailing P/E ratio of 12.3x. Average trailing P/E is 13x in the Electronic industry in South Korea. Total loss to shareholders of 63% over the past three years. New Risk • Jul 05
New major risk - Share price stability The company's share price has been highly volatile over the past 3 months. It is more volatile than 90% of South Korean stocks, typically moving 11% a week. This is considered a major risk. Share price volatility increases the risk of potential losses in the short-term as the stock tends to have larger drops in price more frequently than other stocks. It may also indicate the stock is highly sensitive to market conditions or economic conditions rather than being sensitive to its own business performance, which may also be inconsistent. Currently, the following risks have been identified for the company: Major Risk Share price has been highly volatile over the past 3 months (11% average weekly change). Minor Risks Large one-off items impacting financial results. Shareholders have been diluted in the past year (26% increase in shares outstanding). Market cap is less than US$100m (₩33.8b market cap, or US$24.5m). Announcement • Jun 20
RYUK-IL C&S.,Ltd. announced that it expects to receive KRW 5 billion in funding RYUK-IL C&S.,Ltd. announced a private placement to issue Zero Coupon Series 3 Bearer-Bearing Interest-Bearing, Unsecured Private Placement Convertible Bonds due July 10, 2027for the gross proceeds of KRW 5,000,000,000 on June 18, 2024. The transaction will include participation from new investors Lee Don-won for KRW 3,700,000,000 and Jeonggyun Lee for KRW 1,300,000,000. The transaction has been approved by shareholders, restricted to a hold period and is expected to close on July 10, 2024. The bonds are 100% convertible into 1,922,337 shares at a fixed conversion price of KRW 2,601 from July 10, 2025 to July 10, 2027. The bonds bear zero coupon rate, 2% maturity rate and is matures on July 21, 2027. Announcement • Jun 19
RYUK-IL C&S.,Ltd. (KOSDAQ:A191410) agreed to acquire 92.93% stake in Combustech Co., Ltd. RYUK-IL C&S.,Ltd. (KOSDAQ:A191410) agreed to acquire 92.93% stake in Combustech Co., Ltd. from Lee Don Won and Jungkyun Lee for KRW 11.5 trillion on June 18, 2024. For the period ending December 31, 2023, Combustech Co., Ltd. reported total revenue of KRW 30.25 billion and net income of KRW 1.55 billion. As of December 31, 2023, Combustech Co., Ltd. reported total debt of KRW 17.73 billion, total assets of KRW 25.85 billion and total common equity of KRW 8.12 billion. The expected completion of the transaction is July 10, 2024. Valuation Update With 7 Day Price Move • Jun 06
Investor sentiment deteriorates as stock falls 18% After last week's 18% share price decline to ₩2,380, the stock trades at a trailing P/E ratio of 16.9x. Average trailing P/E is 15x in the Electronic industry in South Korea. Total loss to shareholders of 34% over the past three years. New Risk • May 30
New minor risk - Share price stability The company's share price has been volatile over the past 3 months. It is more volatile than 75% of South Korean stocks, typically moving 7.7% a week. This is considered a minor risk. Share price volatility indicates the stock is highly sensitive to market conditions or economic conditions rather than being sensitive to its own business performance, which may also be inconsistent. It also increases the risk of potential losses in the short term as the stock tends to have larger drops in price more frequently than other stocks. Currently, the following risks have been identified for the company: Minor Risks Share price has been volatile over the past 3 months (7.7% average weekly change). Shareholders have been diluted in the past year (28% increase in shares outstanding). Market cap is less than US$100m (₩37.5b market cap, or US$27.2m). Reported Earnings • Mar 19
Full year 2023 earnings released: ₩1.48 loss per share (vs ₩116 profit in FY 2022) Full year 2023 results: ₩1.48 loss per share (down from ₩116 profit in FY 2022). Revenue: ₩29.0b (down 13% from FY 2022). Net loss: ₩10.6m (down 101% from profit in FY 2022). Profit margin: 0% (down from 3.9% in FY 2022). Over the last 3 years on average, earnings per share has increased by 78% per year but the company’s share price has fallen by 13% per year, which means it is significantly lagging earnings. Valuation Update With 7 Day Price Move • Apr 24
Investor sentiment improves as stock rises 15% After last week's 15% share price gain to ₩4,500, the stock trades at a trailing P/E ratio of 77.3x. Average trailing P/E is 15x in the Electronic industry in South Korea. Total returns to shareholders of 63% over the past three years. Valuation Update With 7 Day Price Move • Apr 06
Investor sentiment improves as stock rises 19% After last week's 19% share price gain to ₩3,390, the stock trades at a trailing P/E ratio of 58.2x. Average trailing P/E is 15x in the Electronic industry in South Korea. Total returns to shareholders of 58% over the past three years. Reported Earnings • Mar 22
Full year 2022 earnings released: EPS: ₩60.00 (vs ₩307 in FY 2021) Full year 2022 results: EPS: ₩60.00 (down from ₩307 in FY 2021). Revenue: ₩32.9b (up 6.7% from FY 2021). Net income: ₩671.6m (down 78% from FY 2021). Profit margin: 2.0% (down from 9.7% in FY 2021). Over the last 3 years on average, earnings per share has increased by 56% per year but the company’s share price has only increased by 29% per year, which means it is significantly lagging earnings growth. Valuation Update With 7 Day Price Move • Sep 26
Investor sentiment deteriorated over the past week After last week's 15% share price decline to ₩2,720, the stock trades at a trailing P/E ratio of 3.1x. Average trailing P/E is 11x in the Electronic industry in South Korea. Total returns to shareholders of 7.7% over the past three years. Announcement • Jun 22
RYUK-IL C&S., Ltd announced that it expects to receive KRW 5 billion in funding RYUK-IL C&S., Ltd (KOSDAQ:A191410) announced a private placement of series 2 non-guaranteed private equity convertible bonds with bearer type interest part for an aggregate gross proceeds of KRW 5,000,000,000 on June 21, 2021. The transaction will include participation from Skyline Investment Co., Ltd. for KRW 4,000,000,000 and Golden Park Partners Co., Ltd. for KRW 1,000,000,000. The bonds carry zero coupon rate and maturity rate of 2% per annum. The bonds will mature on July 30, 2024. The bonds are fully convertible into 1,290,655 common shares of the company at a conversion price of KRW 3,874 per share. The conversion period will start from July 30, 2022 and ends on June 30, 2024. The bonds are redeemable. The transaction is expected to close on July 30, 2021. The transaction has been approved by the board of directors of the company. Is New 90 Day High Low • Feb 09
New 90-day low: ₩2,380 The company is down 32% from its price of ₩3,515 on 11 November 2020. The South Korean market is up 24% over the last 90 days, indicating the company underperformed over that time. It also underperformed the Electronic industry, which is up 37% over the same period. Is New 90 Day High Low • Jan 18
New 90-day low: ₩2,650 The company is down 40% from its price of ₩4,430 on 20 October 2020. The South Korean market is up 30% over the last 90 days, indicating the company underperformed over that time. It also underperformed the Electronic industry, which is up 45% over the same period. Is New 90 Day High Low • Nov 29
New 90-day low: ₩3,120 The company is down 13% from its price of ₩3,600 on 31 August 2020. The South Korean market is up 11% over the last 90 days, indicating the company underperformed over that time. It also underperformed the Electronic industry, which is up 13% over the same period. 
