About Protos Systems

Financial data infrastructure for modern software.

Financial data infrastructure for modern software

Protos Systems builds infrastructure that transforms regulatory financial filings into deterministic datasets for software systems.

Financial disclosures contain critical information used by investors, researchers, and financial platforms. Yet working directly with regulatory filings remains difficult for developers. Filings are revised, statements are restated, and historical values can change over time. These inconsistencies make it challenging to build reliable financial models, research systems, and analytics platforms.

Protos Systems exists to make regulatory financial data reliable for software.

Our systems convert raw filings into structured financial intelligence while preserving filing lineage, historical context, and point-in-time correctness. This allows developers to query financial data with the same reliability expected from modern data infrastructure.

Arche API

Arche API is the primary product developed by Protos Systems.

Arche provides deterministic EDGAR intelligence through a developer-first API designed for quantitative research, financial applications, and data engineering workflows. By preserving restatement history and filing context, Arche enables reproducible financial queries and historical analysis without requiring teams to maintain their own ingestion and normalization pipelines.

Developers can integrate structured financial statements, historical datasets, and regulatory intelligence directly into their systems.

Engineering principles

Protos Systems is built around a set of principles designed for reliable financial infrastructure.

deterministic datasets

Financial queries should produce reproducible results across environments and over time.

point-in-time correctness

Historical financial data must reflect what was known at the time.

transparent lineage

Restatements and revisions are preserved so downstream systems can trace the full history of financial statements.

developer-first infrastructure

Financial intelligence should integrate into software systems through reliable, well-structured APIs.

Building the infrastructure layer for financial disclosures

Protos Systems sits between regulatory disclosure systems and financial software.

By transforming raw filings into structured datasets, Protos enables developers to build financial applications, research systems, and analytics platforms on top of reliable regulatory intelligence.