---
project: anomaly-atlas
document: expA_data_reality/README
author: Simon-Pierre Boucher
contact: contact@spboucher.ai
data_source: hfmarketdata.io
created: 2026-08-12
status: draft
---

# expA_data_reality

Data reality check: what hfmarketdata.io actually returns (granularity, depth, timestamps, corporate actions, limits)

Status: **completed 2026-08-12** — see analysis.md and results/expA_data_reality/. Output: research/data_source_profile.md.