Sigma Journal · 208 studies

When insiders speak, we transcribe.

Long-form, data-driven studies on 1.3M+ filings across 43 markets. Comparative regulation, walk-forward backtests, profiles, market mechanics.

Market Mechanics

Predilife CEO buys again as cluster builds in June

Predilife CEO Stéphane Ragusa bought shares on June 25. Our data shows a micro-cap cluster, weak cohort history, and a score driven by role and timing.

Jun 26, 202612 min

Market Mechanics

Porterfield buys Visionary Copper and Gold in cluster

Isaac Max Porterfield bought about EUR 8,469 of Visionary Copper and Gold on June 24, 2026. Here is the cluster read, cohort data, and caveats.

When insiders speak, we transcribe.

Predilife CEO buys again as cluster builds in June

Porterfield buys Visionary Copper and Gold in cluster

AHIP insider buying cluster: what the directors did

illumin director buys into a June insider cluster

Séché Environnement insider buys cluster into late June

Bouygues insider sales cluster tests the tape

ILC insiders buy into a tiny tape after placement

Laing buys ASCU after Hudbay closes the deal

Decisive Dividend gets a buy cluster from L6 Holdings

Edge Copper’s insider buy cluster is the real tell

Visionary Copper insider buy lands inside a cluster

Beyond Oil insider cluster: what the June buys say