Blog
Notes on SEC EDGAR data, financial APIs, and building with Edgrapi.
How to track congressional stock trades (free, 2026)
Track what members of Congress are buying and selling, free. The STOCK Act 45-day rule, how to read a PTR, the best free trackers, and whether copying their trades works.
How to track hedge fund holdings with 13F filings (2026)
Track hedge fund holdings free with 13F filings: what a 13F shows and hides, the 45-day lag, the best trackers, and how to get alerted on new filings.
Types of SEC filings: the complete guide (2026)
A plain-English map of every major SEC filing: 10-K, 10-Q, 8-K, Form 3/4/5, 13F, 13D/G, S-1, 424B, Form D, DEF 14A, Form 144, grouped by what each one is for.
What is an S-1 filing? IPO registration explained (2026)
What an S-1 filing is, what's inside the prospectus, the IPO process from S-1 to first trade, how it differs from a 10-K and a 424B, and what it reveals about a company.
SEC filing deadlines: when every filing is due (2026)
A plain-English map of every SEC filing deadline: 10-K in 60/75/90 days, 10-Q in 40/45, 8-K in 4 business days, Form 4 in 2, 13F in 45, 13D in 5, plus late-filing rules.
What is a 13F filing? Fund holdings explained (2026)
What a 13F filing is, who files it, the 45-day lag, what it hides (shorts, cash, foreign stocks), and the put/call trap that makes people read it backwards.
What is a Form 8-K? Material events explained (2026)
What a Form 8-K is, the events that trigger one, the item codes that actually matter (5.02, 2.01, 4.02...), the four-business-day deadline, and how it differs from a 10-K.
What is a Form 10-K? The annual report explained (2026)
What a Form 10-K is, the four sections that matter (Item 1, 1A, 7, 8), the 60-to-90-day filing deadlines, and how it differs from a 10-Q and the glossy annual report.
SEC EDGAR API for insider cluster buys: the multi-insider signal
One insider buying is noise; three buying the same stock in a week is signal. Here is what a cluster buy is, how to pull it from the SEC EDGAR API as JSON, and where it misleads you.
SEC EDGAR API for 13D and 13G: activist stakes data
Cross 5% of a company and you must file a 13D or 13G. Here is what each one signals, how to pull them from the SEC EDGAR API as clean JSON, and the field most people read wrong.
What is SEC Form 4? Insider trades explained (2026)
What SEC Form 4 is, who has to file it, the two-business-day deadline, and what the transaction codes (P, S, A, M, F, G) mean, so you can read one and tell a real buy from noise.
SEC EDGAR API as an MCP server: SEC filings for any AI agent (2026)
What a SEC EDGAR MCP server is, the seven tools it exposes, which AI clients can connect, and an honest comparison of the hosted and open-source options. Free tier, no card.
SEC EDGAR API in Claude: add an MCP connector for SEC filings (2026)
Add SEC EDGAR data to Claude as a custom connector: insider trades, 8-K events, filings and financials as MCP tools. The OAuth setup, the config-file route, and what breaks.
SEC EDGAR API in Cursor: connect an MCP server for SEC filings (2026)
Add SEC EDGAR data to Cursor with one block in mcp.json: insider trades, 8-K events, filings and financials as MCP tools. Both auth paths, the tool budget, and what breaks.
OpenInsider alternatives: 7 insider trading trackers compared (2026)
An honest comparison of OpenInsider alternatives for 2026: which insider trading trackers add alerts, an official API, or webhooks, and when OpenInsider is still the best pick.
How to get real-time insider trading alerts (Form 4 webhooks, 2026)
How to get alerted the moment a company insider buys stock: register a webhook on a ticker watchlist and get a signed, parsed SEC Form 4 alert minutes after it files. Free tier.
How to track insider buying: code P, cluster buys, and Form 4 (2026)
How to track which stocks insiders are buying with their own money: read Form 4 code P, ignore the noise, and watch for cluster buys. Plus a free live radar of the day's biggest buys.
SEC EDGAR API in Python: pull company financials in a few lines (2026)
Pull clean SEC EDGAR company financials in Python. Step-by-step with auth, the free-SEC gotchas, all five endpoints, and a copy-paste snippet. No XBRL parsing.
SEC EDGAR API for Form 4: insider trading filings as JSON (2026)
Pull Form 4 insider filings from the SEC EDGAR API as clean JSON: what Form 4 reports, what the transaction codes actually mean, and how to get them by ticker. Free tier.
SEC EDGAR API for 8-K filings: track material events by ticker (2026)
Pull 8-K filing data from the SEC EDGAR API as clean JSON: what an 8-K reports, the item codes, and how to get every 8-K for a ticker with a link to the document. Free tier.
SEC EDGAR API for 10-K sections: Risk Factors & MD&A as text (2026)
Pull the narrative sections of a 10-K or 10-Q from the SEC EDGAR API as clean text: Risk Factors, MD&A, Business. Built for RAG and LLM equity research, not the numbers.
SEC EDGAR API for financial ratios: margins, ROE, leverage as JSON (2026)
Get a company's financial ratios from the SEC EDGAR API as JSON: margins, ROE, liquidity, leverage, growth. Which ratios come from filings, which need a stock price, and how to pull 14 in one call.
SEC EDGAR API: convert XBRL to JSON in one call (2026)
The SEC EDGAR API returns XBRL as JSON, but not in a usable shape. What converting SEC XBRL to clean JSON really means, and how to get named statement fields in one call.
SEC EDGAR API alternatives to sec-api.io: 5 options (2026)
Five real alternatives to sec-api.io for SEC EDGAR data, with July 2026 pricing, free-tier terms, and an honest read on which fits which job.
SEC EDGAR API for free: what you get, what it costs (2026)
The SEC EDGAR API is genuinely free: no key, 10 requests a second. Here is what $0 gets you, where the XBRL pain starts, and when paying makes sense.
SEC EDGAR API for financial statements: income, balance, cash flow (2026)
Pull a company's income statement, balance sheet, and cash flow from the SEC EDGAR API as clean JSON in one call, without decoding XBRL tags yourself.
SEC EDGAR API for CIK lookup: map any ticker to its CIK (2026)
Map any ticker to its SEC CIK as clean JSON. What a CIK is, why EDGAR indexes by CIK not ticker, why it survives ticker changes, and how to look it up in one API call.
SEC EDGAR API for 10-Q filings: quarterly financials by ticker (2026)
Pull 10-Q quarterly financials from SEC EDGAR as clean JSON. What a 10-Q is, how it differs from a 10-K, the filing deadlines, the trailing-twelve-month trap, and how to get the data by ticker in one API call.
SEC EDGAR API for Form 10-K: sections, deadlines, and financials (2026)
What a Form 10-K is, the sections that matter (Item 1, 1A, 7, 8), the filing deadlines, and how to pull its financial statements as clean JSON by ticker in one API call.
SEC EDGAR API for AI agents: function calling for financial data
AI agents guess financial numbers and get them wrong. Function calling fixes it: give the agent a tool that pulls real SEC data from the EDGAR API instead of guessing.
SEC EDGAR API with Zapier: no-code financial data automation
Pull SEC EDGAR financial data into Google Sheets, Slack, or email with Zapier and zero code. How to wire it up, what to automate, and what it actually costs.
SEC EDGAR API for 13F filings: institutional holdings data
13F filings show what big funds own, 45 days late and long-only. Here is what is in them, how to pull them from the SEC EDGAR API by CIK, and how to make them useful.
SEC EDGAR API key: how to get one in 2026 (step by step)
There is no SEC EDGAR API key. The SEC API uses a User-Agent header; a wrapper like Edgrapi gives you a free key (no card) in under two minutes.
SEC EDGAR API: the complete guide to clean financial data (2026)
The SEC EDGAR API turns raw XBRL filings into clean JSON. What it is, every endpoint, the real rate limits, the free tier, and how to pull company financials by ticker.
SEC EDGAR API: why pulling clean fundamentals is harder than it looks
EDGAR gives away every public company's financials for free. Getting clean, comparable numbers out of it is the part nobody warns you about.