Price history
¥6,540Latest+287.0%
Drag across the chart to measure the move between two points.Delayed 15 minutes · monthly closing basis
Business overview
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Key numbersShowing 8 of 19
PER
25.5How many years of earnings it would take to buy the stock. The market average is generally considered to be around 15.PBR
3.77How many times the company's net assets? Around 1x is generally considered a benchmark.ROE
14.8%Earning power. A figure above 10% is generally considered good.Dividend yield
0.0%The annual dividend as a percentage of the share price.Market capitalization
¥26bnShare price × number of shares. The value of the entire company.Equity ratio
82.4%The proportion of assets funded by money that does not have to be repaid.Operating margin
17.1%The percentage of revenue remaining from the company’s core business.Revenue growth (3 years)
-20.2%The average annual growth in sales over the past three years.What to watch next
Progress in Sega’s patent infringement litigation related to MementoMori and Cryptract, including any settlement, ruling or presentation of terms
Impact HighLikelihood Medium
Changes in the operating structure and cost structure resulting from the absorption-type merger in which Koiniwa will be the surviving company, scheduled to take effect on 1 July 2026
July 2026Impact MediumLikelihood Medium
A bottoming-out in the decline of the core title MementoMori, including its billing revenue and retention rate, or the commercialization of a new app or subsequent title, with quantitative disclosure
Next quarter through the full-year resultsImpact HighLikelihood Medium
Changes to the terms, fees and specifications of the App Store and Google Play, as well as the foreign exchange impact on overseas revenue when converted from local currencies into yen
Impact MediumLikelihood Low
What to watch next
Who owns itTop holders total 66.4%
Listed holders 66.4%Everyone else 33.6%
Higuchi Tomohiro (樋口智裕)43.85%
Tanaka Daisuke (田中大介)7.04%
楽天証券株式会社3.84%
SBI Securities Co., Ltd.3.72%
Cygames, Inc.1.99%
須田忠雄1.31%
NOMURA INTERNATIONAL PLC A/C JAPAN FLOW1.19%
BOFAS INC SEGREGATION ACCOUNT1.07%
3 other listed holders2.36%
| Holder | Ownership (%) |
|---|---|
| Higuchi Tomohiro (樋口智裕) | 43.85 |
| Tanaka Daisuke (田中大介) | 7.04 |
| 楽天証券株式会社 | 3.84 |
| SBI Securities Co., Ltd. | 3.72 |
| Cygames, Inc. | 1.99 |
| 須田忠雄 | 1.31 |
| NOMURA INTERNATIONAL PLC A/C JAPAN FLOW | 1.19 |
| BOFAS INC SEGREGATION ACCOUNT | 1.07 |
| 3 other listed holders | 2.36 |
This company's documents
Filings
Timely disclosures
- 2026-09-29Notice Regarding Full-Year Consolidated Earnings Forecast
- 2026-08-25Notice Regarding a Change in the Corporate Name of a Consolidated Subsidiary, a Change in Representative Director, and the Establishment of a Subsidiary (Sub-subsidiary) through a Company Split (Simplified Incorporation-type Company Split)
- 2026-08-14Financial Results Presentation for the Third Quarter of the Fiscal Year Ending September 2026
- 2026-08-14Financial Results for the Third Quarter of the Fiscal Year Ending September 2026 [Japanese GAAP] (Consolidated)
- 2026-07-01Statutory Post-Transaction Disclosure Document (Merger) (Koiniwa Co., Ltd.)
- 2026-06-23Key Questions and Answers Regarding the “MementoMori Web Store” (June 2026)
- 2026-05-15Second-Quarter Financial Results Presentation for the Fiscal Year Ending September 2026
- 2026-05-15Summary of Financial Results for the Second Quarter (Interim Period) of the Fiscal Year Ending September 2026 [Japanese GAAP] (Consolidated)
46 more
- 2026-03-24Statutory Advance Disclosure Documents (Merger) (株式会社Koiniwa)
- 2026-03-24Notice Regarding the Absorption-Type Merger of a Consolidated Subsidiary (Simplified Merger and Abbreviated Merger) and Waiver of Receivables
- 2026-02-13Fiscal year ending September 2026 First-Quarter Financial Results Presentation
- 2026-02-13First-Quarter Financial Results for the Fiscal Year Ending September 2026 [Japanese GAAP] (Consolidated)
- 2025-11-14Financial Results Briefing Materials for the fiscal year ending September 2025 (Business Plan and Matters Concerning Growth Potential)
- 2025-11-14Summary of Financial Results for the Fiscal Year Ended September 2025 [Japanese GAAP] (Consolidated)
- 2025-09-19Notice Regarding Full-Year Consolidated Earnings Forecast
- 2025-08-12Fiscal Year Ended September 2025 Third-Quarter Financial Results Presentation
- 2025-08-12Third-Quarter Financial Results for the Fiscal Year Ended September 2025 [Japanese GAAP] (Consolidated)
- 2025-06-13Notice concerning the execution of an agreement for the development and operation of a new game based on another company’s IP
- 2025-05-13Second-Quarter (Interim) Financial Results for the Fiscal Year Ended September 2025 [Japanese GAAP] (Consolidated)
- 2025-05-13Financial Results Briefing Materials for the six months ended September 2025
- 2025-02-14Financial Results Briefing Materials for the three months ended December 2024
- 2025-02-14Summary of Financial Results for the First Quarter of the Fiscal Year Ended September 2025 [Japanese GAAP] (Consolidated)
- 2024-11-12Financial Results Briefing Materials for the fiscal year ended September 2024 (Business Plan and Matters Concerning Growth Potential)
- 2024-11-12Summary of Financial Results for the fiscal year ended September 2024 [Japanese GAAP] (Consolidated)
- 2024-10-21Notice concerning the filing of a lawsuit seeking an injunction against patent infringement and other relief
- 2024-10-01Notice Regarding the Status of Share Buybacks and Completion of the Buyback
- 2024-09-24Notice Regarding Full-Year Consolidated Earnings Forecast
- 2024-09-02Notice Regarding the Status of Share Repurchases
- 2024-08-13Financial Results Briefing Materials for the nine months ended September 2024
- 2024-08-13Summary of Financial Results for the nine months ended September 2024 [Japanese GAAP] (Consolidated)
- 2024-08-01Notice Regarding the Status of Share Repurchases
- 2024-07-01Notice Regarding the Status of Share Repurchases
- 2024-05-31Notice Regarding the Status of Share Repurchases
- 2024-05-14Financial Results Briefing Materials for the six months ended September 2024
- 2024-05-14Summary of Financial Results for the six months ended September 2024 [Japanese GAAP] (Consolidated)
- 2024-05-01Notice Regarding the Status of Share Repurchases
- 2024-03-19Notice regarding the decision on matters concerning the acquisition of treasury shares
- 2024-02-29Notice Regarding the Status of Share Buybacks and Completion of the Buyback
- 2024-02-13Summary of Financial Results for the three months ended December 2023 [Japanese GAAP] (Consolidated)
- 2024-02-13Financial Results Briefing Materials for the three months ended December 2023
- 2024-02-01Notice Regarding the Status of Share Repurchases
- 2023-12-22Notice regarding the decision on matters concerning the acquisition of treasury shares
- 2023-11-14Summary of Financial Results for the fiscal year ended September 2023 [Japanese GAAP] (Consolidated)
- 2023-11-14Financial Results Briefing Materials for the fiscal year ended September 2023 (Business Plan and Matters Concerning Growth Potential)
- 2023-09-22Notice Regarding Full-Year Consolidated Earnings Forecast
- 2023-08-09Financial Results Briefing Materials for the nine months ended September 2023
- 2023-08-09Summary of Financial Results for the nine months ended September 2023 [Japanese GAAP] (Consolidated)
- 2023-07-03Notice concerning the completion of the acquisition and cancellation of the 9th and 10th Stock Acquisition Rights with third-party allotment, exercise price adjustment and exercise suspension provisions
- 2023-06-16Notice concerning the acquisition and cancellation of the 9th and 10th Stock Acquisition Rights with third-party allotment, exercise price adjustment and exercise suspension provisions
- 2023-05-12Financial Results Briefing Materials for the six months ended September 2023
- 2023-05-12Summary of Financial Results for the six months ended September 2023 [Japanese GAAP] (Consolidated)
- 2023-02-13First-Quarter Financial Results for the Fiscal Year Ending September 2023 [Japanese GAAP] (Consolidated)
- 2023-02-13Financial Results Briefing Materials for the three months ended June 2023
- 2022-12-05Notice concerning preliminary November figures for in-game spending, downloads and advertising expenses for the new major RPG “Memento Mori”
Threads
- 2026-09-29Revenue Dependence on Apple’s and Google’s App Stores
- 2026-09-29Increase in Game Development, Operating, Advertising and Promotional Expenses
- 2026-09-29Disclosure of the consolidated earnings forecast for the fiscal year ending September 2026
- 2026-08-25Expansion into the Entertainment Sector Leveraging Smartphone Game Content
- 2026-08-25Transfer of new businesses other than the smartphone game business to a newly established subsidiary
- 2026-08-25Development of New Services Outside Smartphone Games
- 2026-08-14Expansion of Existing Titles and Development of New Titles
- 2026-08-14New Initiatives through Collaboration with External Companies
53 more
- 2026-08-14Results for the Cumulative Third Quarter of the 13th Fiscal Period
- 2026-08-14Differentiation Through High-Quality Original 2D Graphics and a Design-Led Development Structure
- 2026-08-14Long-Term Operation of Game Apps Through User Analysis and the PDCA Cycle
- 2026-08-14Diversifying Revenue by Establishing Proprietary IP and Expanding to PCs and Home Consoles
- 2026-08-14Increase in combined net sales and operating income for the three fiscal years beginning with the following fiscal year
- 2026-08-14Securing and developing talented personnel and strengthening recruitment capabilities
- 2026-08-14Reliance on Borrowing and Rising Funding Costs
- 2026-08-14Research and Development Activities and Expenditure
- 2026-08-14Growth target of increasing annual revenue severalfold every few years
- 2026-08-14Risk of declining quality and originality of outputs as AI technology advances
- 2026-08-14Aggressive monetization target for a major new RPG
- 2026-08-14Development criterion of targeting annual revenue of at least ¥10 billion for new services
- 2026-07-01Koiniwa Co., Ltd.’s Excess of Liabilities over Assets
- 2026-05-15Stable Growth in the Smartphone Gaming Market Driven by Hit Titles
- 2026-05-15Uncertainty in Overseas Economies and Volatility in Financial and Capital Markets
- 2026-05-15Dependence on Specific Titles
- 2026-05-15No dividends paid, prioritizing retained earnings and business expansion
- 2026-05-15Disaggregation of sales revenue by source, primarily user billing revenue
- 2026-05-15Prudent Management of Surplus Funds and No Speculative Transactions
- 2025-12-25Focus on the smartphone game business as a single segment
- 2025-12-25Our vision is to be an entertainment company that creates lasting memories.
- 2025-12-25Strengthening Game Safety and Soundness
- 2025-12-25Stable Service Delivery Through Strengthening the System Infrastructure and Management Framework
- 2025-12-25Enhancing Corporate Governance and Internal Management Systems
- 2025-12-25Maturation of the Smartphone Game Market and Intensifying Competition, Including from Overseas Developers
- 2025-12-25Decline in service credibility due to inappropriate user conduct and RMT
- 2025-12-25Communications Network and Computer System Failures
- 2025-12-25Delays in Developing High-Quality Titles and a Narrower Development Pipeline
- 2025-12-25Changes in Laws and Regulations Relating to Internet and Game Apps
- 2025-12-25Risk of Infringing Third-Party Intellectual Property Rights
- 2025-12-25Erosion of Corporate Value Due to Negative Publicity or Unexpected Problems
- 2025-12-25Dependence on the Representative Director and President
- 2025-12-25Dilution of Shareholder Value from the Exercise of Stock Acquisition Rights
- 2025-12-25Enhancing Per-Share Shareholder Value Through Share Repurchases
- 2025-12-25Beginning Preparation of Quarterly Consolidated Financial Statements
- 2025-12-25Recoverability of Deferred Tax Assets and Assumptions for Returning to Profitability
- 2025-12-25Concentration of receivables with a specific major payment processing provider
- 2025-12-25Policy for Determining Director Compensation to Promote Medium- to Long-Term Enhancement of Shareholder Value
- 2025-12-25Average length of service for both men and women to reach 7 years or more by 2027
- 2025-12-25Sustainability Basic Policy Not Yet Formulated and Response by Risk Management Committee
- 2025-12-25Risks Related to Local Laws and Regulations and Exchange-Rate Fluctuations Associated with Overseas Expansion
- 2025-12-25Inadequate Internal Management Systems Amid Rapid Business Expansion
- 2025-12-25Application of Accounting Standards for Corporate Taxes, Comprehensive Income and Tax Effects
- 2025-12-25Growth of the Online Matching Services Market and Regulatory Risks
- 2025-12-25Lease Accounting Standards Scheduled for Adoption from FY2028
- 2024-05-14Listing on the Tokyo Stock Exchange Mothers market
- 2023-12-25Business Impact of COVID-19
- 2023-12-25Return to profitability in the fiscal year ending September 2022 and recording operating profit in the fiscal year ending September 2023
- 2023-02-13Strengthening revenue generation through the introduction of a subscription plan for the “Koiniwa” game
- 2023-02-13Changing Financial Statement Presentation from Thousands of Yen to Millions of Yen
- 2022-02-14Application of the Revenue Recognition Accounting Standard for the Fiscal Year Ending September 2022
- 2021-08-13Establishing a Work-from-Home Framework as a Preventive Measure Against COVID-19
- 2018-12-26Use of Listing Proceeds for Business Expansion, Workforce Expansion and Repayment of Borrowings