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SEC Filings: The Primary Source That Analysts Summarize and Mislead About

alphactor.aiApril 18, 2026
secfilingsfundamentals

Why Primary Filings Matter

Every third-party analysis of a public company — Bloomberg, Seeking Alpha, sell-side notes, StockTwits — is a summary of SEC filings. And every summary loses information. Management footnotes that explain why GAAP earnings diverged from non-GAAP get cut. Changes in accounting estimates with billion-dollar P&L impact get buried. New risk factors in the 10-K get ignored because risk factors are boring until they matter. Reading primary filings is the highest-leverage research activity available to retail investors who're willing to do it, precisely because most aren't.

What the SEC Filings Card Shows

The SEC Filings card lists the last 24 months of EDGAR filings: 10-K (annual), 10-Q (quarterly), 8-K (material event), DEF 14A (proxy), Form 4 (insider), 13F (institutional), and foreign private-issuer 20-F where applicable. Each filing is searchable full-text. Crucially, the card includes a change-diff view between the current 10-K/10-Q and the prior year's filing — surfacing every added, removed, or materially changed paragraph, with emphasis on risk factors, accounting policies, and management discussion. An AI summary per filing highlights the top 5-10 material changes in plain English.

SEC filings card on alphactor.ai
SEC filings card on alphactor.ai

Reading Filings Productively

Three practices turn this into a usable workflow. First, start with the risk-factors diff on every 10-K — newly added risk factors are disproportionately informative about what management's actually worried about; they're written by lawyers who are paranoid about being sued for what they didn't warn you about. Second, scan the critical-accounting-estimates section on every 10-Q — changes in inventory reserves, revenue recognition timing, or tax provisions can move reported earnings by 10-20% without changing anything real. Third, read the CEO/CFO certifications in 8-Ks for management transitions — the tone and detail of the departing executive's letter often gives more signal than the corporate statement.

Where It Fits

SEC Filings is the primary-source backbone of the fundamentals page. Pair with Accruals Quality for the earnings-quality read on what's in those filings, Insider Transactions for the Form 4 side, and Institutional Holders for the 13F side.

Open the SEC Filings card → /app/stocks/AAPL/fundamentals

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For informational and educational purposes only. Not financial advice. Learn more