About FinBrief
An AI-powered financial briefing service built on transparency — about our sources, our methodology, and our use of artificial intelligence.
What FinBrief Does
FinBrief is a daily financial intelligence service. Every morning at 8:00 AM KST, our automated pipeline collects news from 8+ financial news sources, scores each article for importance and relevance, and uses Google Gemini AI to analyze and summarize the most material developments.
Alongside the news analysis, the pipeline calculates the One-Way Market Probability Index — a proprietary composite indicator measuring the strength and conviction of the current market trend using S&P 500 technical data and VIX readings.
The briefing is delivered via Telegram bot, with a web archive available at finbrief.yeomniverse.com/briefing.
Our Methodology
Step 1 — News Collection
We collect news via RSS feeds from the following sources, with deduplication to ensure each story is counted once:
Step 2 — Importance Scoring
Each article is scored 0–100 based on four signals: source credibility (weighted by publication tier), cross-source corroboration (same story from multiple outlets scores higher), recency (articles within the last 6 hours score higher), and content depth (keyword signals for materiality: earnings, Fed, rate, GDP, etc.). Only the top-scored articles proceed to AI analysis.
Step 3 — AI Analysis
Filtered articles are sent to Google Gemini with a structured prompt that instructs the model to act as a senior market strategist, selecting the most materially significant news items and summarizing each in three sentences: what happened, the mechanism that makes it significant, and the likely second-order effect.
The AI is given explicit criteria: materiality (would a portfolio manager adjust positions?), timeliness (is this actionable now?), and signal quality (exclude rumors and promotional content). The model is not given trading instructions and does not make buy/sell recommendations.
Step 4 — One-Way Market Index Calculation
In parallel with news analysis, we calculate the One-Way Market Probability Index using one year of S&P 500 (^GSPC) price/volume data and VIX (^VIX) readings. The composite score is a weighted average of 7 technical components:
Full methodology: One-Way Index page
AI Usage Disclosure
FinBrief uses artificial intelligence (Google Gemini) to analyze and summarize financial news. The AI-generated content is not reviewed by human editors before publication. The summaries represent the model's interpretation of source material and may contain errors, omissions, or mischaracterizations.
The One-Way Market Index is calculated algorithmically from public market data. It is a quantitative tool, not a prediction model, and does not incorporate fundamental analysis, macroeconomic forecasting, or human judgment.
All FinBrief content is provided for informational and educational purposes only. Nothing published by FinBrief constitutes financial, investment, legal, or tax advice. Always conduct your own research and consult qualified professionals before making investment decisions.
Who Built This
FinBrief is an independent project built and maintained by Seungjun Yeom, a software engineer interested in the intersection of AI and financial markets. It is not affiliated with any financial institution, broker, or investment advisor.
The project is part of the Yeomniverse collection of independent digital projects.
Contact & Feedback
For questions, data corrections, or feedback about the briefing quality or One-Way Index methodology, please reach out via GitHub Issues on the project repository, or contact via the Telegram bot.
Financial Disclaimer: All content on FinBrief is for informational purposes only. FinBrief is not a registered investment advisor, broker-dealer, or financial planner. Nothing on this site constitutes financial advice, investment advice, trading advice, or any other sort of advice. You should not treat any of FinBrief's content as such.
FinBrief is not responsible for any investment decisions made based on information provided on this site. Past performance is not indicative of future results. Investing involves risk, including the possible loss of principal.