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Multi-market insider intelligence. Official public filings, re-aggregated and scored. Free account open.

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Built in Paris. Public sources across 43 markets: AMF France, SEC EDGAR Form 4 US, BaFin Germany, SIX SER Switzerland, RNS United Kingdom, SEDI Canada, Consob Italy, CNMV Spain, AFM Netherlands, FSMA Belgium, Oslo Bors Norway, Nasdaq Helsinki, Nasdaq Copenhagen, ASX Australia, FMA Austria, CVM Brazil, HKEX Hong Kong, BSE-Sofia Bulgaria, Tadawul Saudi Arabia, DART South Korea, EDINET Japan, SSE and SZSE China, SEBI India, KNF Poland, PSE Philippines, NZX New Zealand, JSE South Africa, among others. Prices + fundamentals via Yahoo Finance, STOXX 600 sector ETFs (iShares Xetra). Stack: Next.js 16, Prisma, Vercel. Live out-of-sample tracker since 2026-05-27. Methodology audits: /methodologie and /docs/method-review/.

Sources: official public filings under MAR Art.19 (EU and EEA), SEC Section 16 / Form 4 (US), Art.56 SESTA (CH, SIX SER), NI 55-104 / SEDI (CA), Corporations Act s205G (AU) and equivalent regimes. Signals on this site are for educational use only and do not constitute investment advice within the meaning of MiFID II / SEC Reg-IA. Past performance does not guarantee future results. Swiss SIX SER filings are anonymised by law (role only, no name).

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Sigma Journal / Market Mechanics

Market Mechanics

From filing to price impact: microstructure, currency-normalised comparisons, walk-forward design.

721

published studies

Market Mechanics

Twist Bioscience: 5 insider sales after a 15.65% jump

Twist Bioscience rallied 15.65% on August 5, then five insiders filed sales. Here is what the cluster says, and what it does not.

Aug 6, 202610 min

Market Mechanics

Meta director sells EUR 243,436 as AI capex bites

Meta’s AI spending, ad growth and a director sale collide after a rough earnings reaction. Here is what the filing adds, and what it does not.

Aug 6, 20269 min

Market Mechanics

1 2 3 4 5 6 7 8 9 10

Ibotta CTO sells EUR 2.7k after Q2 beat and rally

Ibotta CTO Luke Roy Swanson sold EUR 2.7k after a Q2 beat and a sharp post-earnings rally. Here is the bull case, the catch, and the cohort read.

Aug 6, 202610 min

Market Mechanics

BillionToOne CEO sells EUR 744k as BLLN tests $150

BillionToOne’s CEO sold shares after a sharp Q2 print. We set the filing against Natera, Guardant and the biotech bid.

Aug 6, 20268 min

Market Mechanics

Airbnb CFO sells EUR 498k as July sales stack up

Airbnb CFO Elinor Mertz sold EUR 498k after a run of July insider sales. Read the filing against travel demand, peers and the latest print.

Aug 6, 20268 min

Market Mechanics

Power Corp’s August 4 to 5 buys versus Great-West

Power Corp bought through August 4 and 5 while Great-West kept the sector bid alive. Here is what the filings add, and where they do not.

Aug 6, 20269 min

Market Mechanics

Power Corp buys EUR 57 as Manulife trails

Power Corporation bought back into its own name for EUR 57 on August 4, while the stock outpaced Manulife and peers on a strong year.

Aug 5, 20269 min

Market Mechanics

Philip Petursson buys C$8.8k of IGM after Q2 growth

IGM Financial posted C$622 billion in AUM and 2.2 billion in net flows, then director Philip Petursson bought about EUR 6,418 on August 4.

Aug 5, 20269 min

Market Mechanics

Samir Patel buys EUR 132,647 as silver firms up

First Majestic’s Samir Patel bought twice on August 4 as silver firmed, but the cluster, the Q2 miss and the cohort math complicate the bull case.

Aug 5, 20269 min

Market Mechanics

Verallia’s EUR 1.62m board buys after July 28 results

Verallia’s board bought EUR 1.62m each after July 28 results. Glass packaging, peer valuation gaps, and what the filings add now.

Aug 5, 20268 min

Market Mechanics

Thermador’s August buy cluster versus Ferguson’s scale

Thermador Groupe’s August buying cluster lands beside a buyback and a stronger first half. Here is how it stacks up against Ferguson.

Aug 5, 20269 min

Market Mechanics

Amundi’s 2 August sales land near EUR 96 record highs

Amundi saw two August 3 insider sales as the stock hovered near record highs. Here is how the filings look against sector flows and peer positioning.

Aug 5, 202610 min