A Data-Driven Workflow for Tracking Hedge Fund Portfolios with 13F Filings

Most people discover 13F filings, look up what Warren Buffett bought, and stop there. That's leaving 90% of the value on the table. The 5-Step Workflow 1. Pick 3-5 High-Signal Filers Not all 13F filers are equal. Start with managers known for concentrated portfolios — large hedge funds with <100 holdings have more signal per position. 2. Rank by Portfolio Weight A stock that's 9% of a manager's portfolio tells you more about conviction than a 0.3% position that got CNBC coverage. 3. Tag Recurring Names When the same ticker appears in top-10 positions across 3+ different managers, that's a signal worth investigating. 4. Track Quarter-over-Quarter Changes New positions : potential new thesis Consecutive adds : increasing conviction Trims with continued holding : profit-taking, still bullish Full exits : thesis broken 5. Build Your Watchlist from Repeat Buys Names showing up repeatedly across multiple managers over multiple quarters. Single-quarter, single-manager positions are noise. Com