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Research & Methodology

Methodology, data analysis, and the thinking behind StockDrifts signals.

Methodology · Updated

Korea Insider Signal Tiers — Cross-Sectional Alpha from 56K+ DART Filings

170,720 share-count changes across 56,930 Korean DART filings, ranked by cross-sectional alpha into signal tiers. See which insider buys actually pay.

Methodology · Updated

Japan Insider Signal Tiers — 12-Month Forward Returns from 101K+ Filings

101,000+ Japanese large-shareholding filings scored on fixed 12-month forward returns. See which EDINET insider signals predict returns, and which don't.

Methodology

How We Rate Japan's Insider Investors — Our Methodology

How StockDrifts rates every EDINET filer 1–5 stars, using a composite of 5-year and 3-month returns across 50,000+ filings. The full methodology, in detail.