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Product Requirements Document - Overview

1. Executive Summary​

1.1 Product Overview​

The Screener is a comprehensive data-driven stock screening and analysis platform designed for Korean individual investors. The platform enables users to discover investment opportunities through advanced filtering capabilities powered by 200+ financial and technical indicators.

1.2 Problem Statement​

Individual investors face several challenges in the Korean stock market:

  • Information Overload: Over 2,400 listed companies on KOSPI/KOSDAQ with complex financial data
  • Time Constraints: Analyzing hundreds of stocks manually is time-prohibitive
  • Limited Tools: Existing platforms lack sophisticated filtering or charge premium fees
  • Data Complexity: Financial metrics require expertise to interpret correctly

1.3 Proposed Solution​

A web-based platform that:

  • Provides instant stock screening using 200+ indicators with intuitive filters
  • Delivers comprehensive analysis for individual stocks with visual charts and financial breakdowns
  • Offers real-time insights on market trends, hot stocks, and sector movements
  • Enables portfolio tracking with performance analytics
  • Democratizes access to institutional-grade data for retail investors

1.4 Success Criteria​

MetricTargetTimeline
Active Users50,000+12 months
Conversion Rate (Free β†’ Paid)5%6 months
User Retention (30-day)40%6 months
Average Session Duration8+ minutes3 months
Screening Performance< 500ms query timeLaunch

2. Product Vision & Objectives​

2.1 Vision Statement​

"Empower every Korean investor with institutional-quality stock analysis tools, enabling data-driven investment decisions through simplicity and transparency."

2.2 Core Objectives​

Business Objectives​

  1. Market Leadership: Become the #1 stock screening platform in Korea within 18 months
  2. Revenue Growth: Achieve $500K ARR by end of Year 1
  3. User Base: Acquire 100,000 registered users within 12 months
  4. Brand Recognition: Establish thought leadership in data-driven investing

Product Objectives​

  1. Comprehensiveness: Support 200+ financial indicators covering all analysis dimensions
  2. Performance: Deliver screening results in under 500ms for 99th percentile queries
  3. Usability: Enable users to find relevant stocks within 60 seconds ("1λΆ„ λ§Œμ— κ³¨λΌλ³΄μ„Έμš”")
  4. Accuracy: Maintain 99.9% data accuracy with real-time updates
  5. Scalability: Support 10,000+ concurrent users without degradation

User Objectives​

  1. Discovery: Help users identify investment opportunities aligned with their strategy
  2. Education: Teach users how to interpret financial metrics through contextual guidance
  3. Efficiency: Reduce research time from hours to minutes
  4. Confidence: Provide reliable, audited data from official sources (KRX, F&Guide)

2.3 Key Differentiators​

FeatureOur PlatformCompetitors
Indicator Count200+ comprehensive metrics20-50 basic metrics
Response Time< 500ms2-5 seconds
Data SourcesKRX + F&Guide (official)Mixed/unverified sources
PricingFreemium with generous free tierExpensive premium-only
User ExperienceModern React SPALegacy interfaces
Real-time UpdatesLive market data15-20 min delay

3. Market Analysis​

3.1 Market Size & Opportunity​

Korean Stock Market Overview (2024)

  • Total Listed Companies: ~2,400 (KOSPI: ~900, KOSDAQ: ~1,500)
  • Active Trading Accounts: 35M+ (56% of population)
  • Individual Investor Market Share: 65% of daily trading volume
  • Average Age of Retail Investors: 35-45 years (increasingly younger)

Target Addressable Market

  • TAM (Total Addressable Market): 35M trading accounts
  • SAM (Serviceable Addressable Market): 10M active traders (trade monthly)
  • SOM (Serviceable Obtainable Market): 500K users (5% of SAM within 2 years)

3.2 Competitive Landscape​

Direct Competitors​

1. Naver Finance

  • Strengths: Massive user base, integrated news, free
  • Weaknesses: Limited screening, basic metrics only, slow
  • Market Share: ~60%

2. Investing.com Korea

  • Strengths: Global platform, technical analysis tools
  • Weaknesses: Not optimized for Korean market, English-focused
  • Market Share: ~5%

3. WiseFn/FnGuide Direct

  • Strengths: Professional-grade data
  • Weaknesses: Expensive (B2B focus), complex UI
  • Market Share: ~2% (retail)

4. Quantit (ν€€ν‹°νŠΈ)

  • Strengths: Quantitative focus, backtesting
  • Weaknesses: Complex for beginners, limited free tier
  • Market Share: ~3%

Competitive Advantages​

  1. Speed: Sub-500ms screening vs 2-5s competitors
  2. Depth: 200+ indicators vs 20-50 typical
  3. UX: Modern React SPA vs legacy interfaces
  4. Accessibility: Generous free tier vs paywall-first
  5. Education: Contextual metric explanations vs raw numbers
  1. Rising Retail Participation: Individual investors now dominate daily volume (65%+)
  2. Younger Demographics: 20-30s age group growing fastest (40% YoY)
  3. Mobile-First: 70% of trading via mobile apps
  4. Data Democratization: Demand for institutional-quality tools
  5. ESG/Thematic Investing: Growing interest in sector/theme-based strategies