Data Sources & Accuracy
We think you should know exactly where every number on the site comes from. Most of our fundamental data is drawn directly from companies' official filings with the U.S. Securities and Exchange Commission (SEC) — public, primary sources.
| Data | Source | Updated |
|---|---|---|
| Stock prices & market cap | Market-data providers | Through each trading day |
| Fundamentals (P/E, margins, ROE, growth, debt) | Company filings via the U.S. SEC | Refreshed regularly |
| 5-year financials (revenue, earnings, cash flow, balance sheet) | SEC EDGAR (10-K / 10-Q filings) | Updated as new filings are released |
| Institutional holdings (Portfolio Tracker) | SEC 13F filings | Quarterly, after each filing window |
| Insider buying & selling | SEC Form 4 filings | Ongoing (rolling window) |
How updates work
Prices update several times through each trading day. Fundamentals and financials are refreshed on a regular schedule as companies file with the SEC. Ratings are recomputed from the latest data automatically — see exactly how on our methodology page.
Accuracy & limitations
- Data is not real-time. Prices and filings can be delayed, and figures may be restated by companies later.
- Some values are estimates or derived (for example, forward P/E or projected figures) and are labeled as such.
- We aim for accuracy but cannot guarantee data is complete or error-free — always verify important figures against the original SEC filing.
Spotted an error?
We take corrections seriously. If a number looks wrong, email contact@startlongterm.com and we'll review it.
Last reviewed: June 2026
Educational content only — not financial advice. Data is provided for information and may contain delays or errors; verify against primary sources before relying on it.