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Systematic discovery & rigorous validation of statistical anomalies in open HF market data (hfmarketdata.io) — pre-registered, artifact-null-driven, fully reproducible. Live atlas: www.anomaly-atlas.io

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# project: anomaly-atlas document: candidate_02/README author: Simon-Pierre Boucher contact: contact@spboucher.ai data_source: hfmarketdata.io created: 2026-08-12 status: draft

# candidate_02

H13 — Turn-of-month 2006–2026: did the last calendar survivor (Marquering et al. 2006) survive? One pre-registered window (−1..+3), permuted-calendar null, SPA.

Status: assigned 2026-08-12 (Phase 4); prototyping starts after expC–E scans.