Sigma Journal, insider research, quant studies, transparency

Sigma Journal

Long-form, data-driven studies on 1.6M+ filings across 43 markets. Comparative regulation, walk-forward backtests, profiles, market mechanics.

780

published studies

1.6M+

filings analysed

markets covered

Regulation & Transparency

ASX director interest notices explained: Appendix 3Y rules and deadlines

Who files ASX Appendix 3X, 3Y and 3Z notices, the 5 business day deadline under Listing Rule 3.19A, how Forms 603/604/605 substantial holder notices differ, and the traps in reading them.

Jul 10, 20267 min

Regulation & Transparency

SEBI insider-trading disclosures explained: PIT and SAST filings in India

How India's two disclosure regimes work: PIT Regulation 7 insider trades over Rs 10 lakh a quarter, SAST 5 and 25 percent stake thresholds, deadlines, and reading traps.

When insiders speak, we transcribe.

ASX director interest notices explained: Appendix 3Y rules and deadlines

SEBI insider-trading disclosures explained: PIT and SAST filings in India

Kootenay Resources insider buy lands in a thin silver tape

Clip Money insider cluster meets a cash-management tape

Séché Environnement buying cluster meets a steady waste tape

Puma Biotechnology CEO sale lands in a hot biotech tape

EWSB insider buying lands as regional banks firm up

Parex Resources insider buying cluster meets a shaky oil tape

Cuentas insider buying cluster meets a thin tape

Butterfly Network insider selling meets a crowded tape

Glaukos insider selling meets a hot ophthalmic tape

Mirum’s CEO sold into strength, and the tape matters