Free for the Community. Full SEC filing API, all datasets, no cost.
3spread

About 3spread

Rethinking SEC data infrastructure

We're building the financial data layer that should have existed years ago, turning raw SEC filings into clean, standardized, comparable data for anyone who needs it.

SEC filings are public. Usable SEC data isn't.

Every public company in the United States files detailed financial reports with the SEC: income statements, balance sheets, cash flows, insider transactions, institutional holdings, proxy statements, and more. It's one of the richest datasets in the world, and it's entirely free to access.

The problem is that “free to access” and “ready to use” are very different things. Every company structures its filings differently. They use different labels for the same data points, different layouts for the same tables, and different conventions for the same disclosures. Comparing two companies means hours of manual reconciliation. Building a pipeline across thousands of companies means building an entire data normalization infrastructure from scratch.

The existing solutions fall into two camps. Enterprise vendors like FactSet and Bloomberg solve the problem, but at price points that start in the hundreds of thousands and scale into the millions, designed for institutions with dedicated data budgets. Smaller vendors either don't cover the full breadth of filing types, can't maintain consistency across companies, or charge prices that don't reflect what they're actually delivering.

We started 3spread because we think that's a solvable problem. Public companies file their data with a public agency. It exists to serve the public, and there's no reason it should be this hard to use. So we did the hard part, and for the community we give it away: the full datasets through our API. The data was always yours. We just make it usable.

3spread sits in the gap. We deliver the same depth of standardization and coverage as the enterprise platforms, through a modern API. For the Community it's free, always. The businesses that build on 3spread commercially or run it at scale pay for a license, which keeps the data free for everyone else.

Standardization is the point

Bringing the data into a standardized format and serving it through an accessible API lets anyone take full advantage of the massive volume of data the SEC publishes, without dealing with the headaches and costs of data engineering.

Built on principles

Sector-specific standardization

A bank's income statement is fundamentally different from a tech company's or an insurer's. We don't force them into a single generic template. We maintain separate schemas for each sector so comparisons are actually meaningful.

Deterministic processing

Our pipeline uses structured algorithms, not black-box models that drift over time. The same filing processed today will produce the same output tomorrow: consistency you can build on.

Breadth and depth

Our API already spans 30+ filing types, from insider transactions and institutional holdings to fund disclosures and proxy statements, and we're actively expanding into new filing types and data categories.

Who we are

3spread is a small team based in Denver, Colorado. Our backgrounds span mathematics, engineering, and finance, including time spent in banking and at major tech firms.

We built 3spread because we lived the problem firsthand. As long-time investors, we spent years reading through filings and trying to integrate that data into our own analysis. The experience was consistently painful. Not because the information wasn't there, but because getting it into a usable format required more engineering work than the actual analysis. When we looked at what was available, we found enterprise platforms we couldn't afford and smaller providers that couldn't deliver the consistency we needed.

So we decided to build it ourselves.

Jamie & Mackenzie, Founders

team@3spread.com

By the numbers

500K+
Filers tracked
From companies to the people behind them
30+
Filing types
Across companies, funds, and people
2012
Earliest filing
Retroactively standardized

What's next

Two ways in: start building, or read the reference.

Try the API

Free for the Community, always. Build against real data, no commitment.

Read the docs

Browse the full API reference, endpoints, and example queries.