Compounder Blog
Latest articles, published on auto-pilot.
13F Filing Deadlines: The Quarterly Calendar Every Investor Needs
Track the SEC's 45-day 13F filing deadlines each quarter and learn how to spot fresh institutional moves before the data goes stale.
13F Filings of Top Investors: How to Read Buffett, Klarman, Burry and More Without Losing a Weekend
Learn how to track 13F filings of top investors like Buffett, Klarman, and Burry, and what position changes actually reveal about conviction and risk.
Prompt Engineering for Stock Research: How to Ask Your AI Analyst Better Questions
Learn how to write a sharper ai stock analysis prompt—comparisons, thesis stress-tests, and screener handoffs—to get institutional-grade answers fast.
A Repeatable Options Analysis Framework for Every Trade
A step-by-step options analysis framework covering Greeks, breakeven, probability of profit, and payoff—so every trade gets the same rigorous check.
How to Search 13F Filings on SEC EDGAR (Step-by-Step Guide)
Learn how to search 13F filings on SEC EDGAR to see what hedge funds own, then see why sortable tables beat scrolling through raw filings.
What Reddit Really Says About AI Stock Analysis Tools
We dug into what investors say about AI stock analysis on Reddit — the recurring complaints, the praise, and what actually separates a trustworthy tool.
AI Stock Analysis on GitHub: What DIY Scripts Get Right (and Where They Fall Short)
Exploring the appeal of AI stock analysis GitHub projects—and why source-verified, maintained tools solve the reliability gaps DIY scripts can't.
7 Stock Research Tools Serious Investors Actually Use
A practical comparison of stock research platforms — from free screeners to AI-driven analysts — showing what each is good for and where Compounder's Comp…
AI Stock Analysis Tools: What They Actually Do (and Don't)
A clear-eyed look at how an AI stock analysis tool really works — chat-based Q&A vs. cited deep research — and where human judgment still matters.
Free Stock Screener Guide: Find Quality Stocks in Seconds
Learn how to use a free stock screener to filter thousands of stocks fast, then see how quality-scored presets take your research further.
13F Filings Explained: What They Are and Why They Matter
A plain-English breakdown of what a 13F filing discloses, who must file, and how to read one — then shows how to browse a legend investor's holdings, hist…
Options Analysis Tools: How to Build a Multi-Leg Strategy Without a Bloomberg Terminal
Learn how to evaluate options with Greeks, payoff diagrams, and breakeven points, then build a multi-leg strategy step by step with Compounder.
Compounder Score vs. F-Score vs. Z-Score: Which to Trust for Quality Investing
Compounder Score, Piotroski F-Score, and Altman Z-Score all rate stocks differently. Here's what each measures and when quality investors should use them.
Stock Research Platforms: Institutional Power, Retail Price
See how modern stock research platforms bring Bloomberg-style analysis, AI research, and backtesting to individual investors—without the terminal price tag.
What Wall Street Analysts Do—and How AI Now Does It Too
See what a stock research analyst actually does day to day, and how AI Analyst Chat and Deep Research modes now handle much of that workflow.
Finviz Screener Limits: What It Can't Tell You About Quality
The Finviz screener is great for price and technical filters, but it misses business quality. Here's what it can't show you—and what to check instead.
Sector Rotation Explained: How to Spot the Shift Before It's Obvious
Learn what drives sector rotation and how tracking quality scores across sectors can help you spot the shift before the headlines catch up.
Special Situations Investing: How to Spot Spin-Offs, IPOs, and Insider Buys Before the Crowd Does
Learn how special situations investing—spin-offs, IPOs, and insider buying—can uncover mispriced stocks, and how to screen for them systematically.
Portfolio Tracker vs. Spreadsheet: What You're Actually Missing
Spreadsheets work until your portfolio grows. See what a dedicated portfolio tracker adds that manual tracking can't — crypto, context, and more.
Backtesting Stocks: How to Avoid Fooling Yourself With History
Backtesting stocks can mislead as easily as it can inform. Learn the common traps and how to configure a realistic test with Compounder.
What Makes a True Compounder Stock? A Practical Checklist
Learn the traits that define real compounder stocks and how to screen, track, and backtest candidates using a repeatable, data-driven checklist.
Quality Investing 101: The Five Metrics That Actually Matter
A no-jargon guide to quality investing: the five metrics that define a quality company and how to compare scoring systems to find them faster.
Modern Value Investing: Data-Driven Rules for Today's Market
Value investing isn't dead—it's just under-tooled. Learn how to apply Graham's classic rules with modern data, alerts, and insider signals.
Building a Stock Screener for Day Trading: Criteria That Matter
What separates a stock screener for day trading from a long-term value screen? We break down volume, volatility, momentum, and how to build your workflow.
How to Find Quality Dividend Stocks Beyond the Yield Chase
High yield can signal trouble, not opportunity. Learn how to screen for quality dividend stocks using FCF trends, payout discipline, and backtesting.
Stock Alerts That Matter: Cutting Noise From Signal
Generic price alerts create noise, not decisions. Learn how signal-based stock alerts like Fat Pitch and Score Regime Change cut through it.
What Is Intrinsic Value — and Why Most Tools Get It Wrong
Learn how intrinsic value calculation really works, which hidden assumptions break most screeners, and what a transparent intrinsic value calculator for stocks shows you.