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

Market Mechanics

Patricia Geibel-Conrad buys EUR 103,114 as DEUTZ rallies

DEUTZ drew a fresh insider-buying cluster in August, with Patricia Geibel-Conrad adding EUR 103,114 after a sharp defense-led rerating.

Sep 1, 20268 min

Market Mechanics

BNP Paribas at 102 euros after JPMorgan's upgrade

JPMorgan turned bullish on BNP Paribas, but the bank's latest move sits inside a strong sector tape, a fresh rating affirmation and no new insider filing.

When insiders speak, we transcribe.

Patricia Geibel-Conrad buys EUR 103,114 as DEUTZ rallies

BNP Paribas at 102 euros after JPMorgan's upgrade

Airbus near €195, with no fresh insider bid

Sanofi at €77.25, and the missing insider bid

Nordnet’s two co-CTOs sold and bought EUR 105,515 each

Sea Ltd: 4.93% drop, then EUR 5.9m of sales

Viaplay's 31 August buy cluster and 1.33 SEK floor

Zee Entertainment's Rs 757.9m warrant buy vs Sun TV

HSBC at 1,528.40p, and the buyback keeps biting

Attendo CFO Mikael Malmgren trades EUR 381k twice

HSBC after $1bn buyback and 23% profit jump

HSBC at 1,528.40p, buy-backs keep the bid alive