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Plain-English guides to the public disclosures that move markets — how to read them, what the research says about them, and how to build an alert strategy around them. Written by the Stock Alerts team; every guide links back to primary sources. For a product-by-product catalog of the app and website, see all Stock Alerts features.
How to Read an SEC Form 4: Insider Trading Filings Explained
Who has to file, what every transaction code means (P, S, A, M, F, G…), and how to tell a conviction buy from compensation noise — with a worked example.
Read the guide → Insider TradingInsider Buying vs. Selling: What Each Signal Really Tells You
Why purchases carry more information than sales, when selling does matter, the power of cluster buying, and how 10b5-1 plans change the picture.
Read the guide → InstitutionsWhat Is a 13F Filing? How to Track Hedge Fund Portfolios
Who files, the 45-day lag, what the form hides (shorts, cash, foreign holdings), and how professionals actually use quarterly holdings data.
Read the guide → InstitutionsSchedule 13D vs. 13G: Activist Stakes and Beneficial Ownership
The 5% rule, why a 13D can move a stock in a day, what Item 4 reveals about activist intent, and the 13G-to-13D switch that signals a campaign.
Read the guide → CongressHow Congressional Stock Trading Disclosures Work: The STOCK Act
What members of Congress must report, the 30–45 day deadlines, the dollar-range problem, and how to interpret the data without the hype.
Read the guide → Alerts & StrategyThe Complete Guide to Stock Alerts: Price, Technical & Filing Alerts
Every major alert type — price levels, percent moves, moving averages, RSI, volume, 52-week levels, earnings, dividends, SEC filings — and how to combine them without alert fatigue.
Read the guide → SEC FilingsHow to Read an SEC 8-K: Current Reports and Item Numbers
What Form 8-K is, which item numbers move stocks (M&A, earnings, CEO changes, cyber incidents), and how Stock Alerts decodes each filing.
Read the guide → Insider TradingForm 3 vs Form 4 vs Form 5: Insider Ownership Filings
Initial holdings, two-business-day trade reports, and annual catch-up filings — how the three insider forms fit together and what each is not.
Read the guide → Stock ResearchHow to Research a Stock: Brands, Leadership, Ownership & Filings
A checklist for any ticker — brand portfolio, executives and board, 13F and insider ownership, EDGAR financials, earnings, and government contracts.
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