Building Auditable U.S. Equity Research Data Pipelines from Official Sources

Summary

This guide organizes U.S. equity research inputs into five source groups: company filings, investor relations materials, government macroeconomic releases, trading calendars and halt notices, and public checks on brokers or advisers. It treats regulatory filings as the primary reference for company disclosures, while company investor relations pages provide earnings releases, presentations, and event materials. For macro and market data, it recommends preserving contextual fields such as units, frequency, seasonal adjustment, release time, and revision vintage.

The central method is to retain enough lineage to reproduce and inspect each observation: source and retrieval time, issuer or filing identifiers, reporting period, measurement units, revision, raw-file hash, and parser version. It also cautions that ordinary weekdays are not a reliable proxy for trading sessions because holidays, early closes, time-zone changes, daylight saving, and halts affect market availability. The document offers a practical checklist rather than a demonstrated pipeline or empirical study; official sources can update, so saved records should remain traceable to their original materials.

Key ideas

• Use regulatory filings as the reference point for company disclosure data.
• Keep filing identifiers and original documents alongside parsed values.
• Record units, release timestamps, and revision vintages for macroeconomic series.
• Trading calendars must account for holidays, early closes, time zones, and halts.
• Store retrieval details, raw-file hashes, and parser versions to support audits.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.