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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, insider research, quant studies, transparency · page 52

Sigma Journal

When insiders speak, we transcribe.

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

43

markets covered

All Regulation & Transparency Quant & Backtests Insider Profiles Market Mechanics Engineering Industry Analysis Newsletter

Market Mechanics

Eldorado Gold insider buying cluster meets a hot gold tape

Multiple Eldorado Gold insiders bought on June 30 as gold stayed volatile and peers traded mixed. Here is the read against the tape.

Jul 1, 202610 min

Market Mechanics

Grey Matters insider buys land as biotech tape firms

Grey Matters Health drew a two-insider buying cluster in late June. Here is how the filings read against micro-cap biotech, cash, and the tape.

1 2 3 4 5 6 7 8 9 10 11

Jul 1, 202610 min

Market Mechanics

Kootenay Resources insider buy lands in a weak tape

Chris Curran bought Kootenay Resources shares on June 30 as juniors sold off, after a small financing and amid a sharp metals pullback.

Jul 1, 20269 min

Market Mechanics

CMG insider buying lands as energy software firms reprice

A June 30 director buy at Computer Modelling Group lands inside a wider insider cluster as energy software names trade against a mixed oil tape.

Jul 1, 202610 min

Market Mechanics

Stockworks Gold insider buys land in a weak gold tape

CEO Nasim Tyab bought about EUR 12,354 of Stockworks Gold on June 30 as gold miners lag and the company leans on a Brazil project.

Jul 1, 20269 min

Market Mechanics

Beta Bionics CFO sale lands as diabetes tech stays hot

Beta Bionics CFO Stephen Feider sold about EUR 170,000 of stock in late June. Here is how the filing reads against diabetes tech peers and the tape.

Jul 1, 202610 min

Market Mechanics

Vertex Resource Group buys land as the tape stays weak

Two June 30 buys by Terry Allan Stephenson put Vertex Resource Group back on the insider radar, but the stock and cohort math keep the read grounded.

Jul 1, 202610 min

Market Mechanics

Séché Environnement insider buying cluster meets a steady tape

Maxime Séché bought EUR 417,550 of Séché Environnement stock on June 29. Here is how the cluster reads against the sector, peers and tape.

Jul 1, 202611 min

Market Mechanics

908 Devices insider sales land as the tape softens

Kevin J. Knopp sold 2,798 MASS shares on June 26 under a 10b5-1 plan. Here is how the cluster reads against peers, rates and the tape.

Jul 1, 20269 min

Market Mechanics

NordX Metals insider buys land in a hot uranium tape

CEO Andrew William Bowering bought NordX Metals stock on June 29 and 30. Read the cluster buy against Sweden's uranium policy shift and the junior tape.

Jul 1, 20269 min

Market Mechanics

Tikehau Capital insider buying cluster meets a soft tape

Antoine Flamarion bought Tikehau Capital shares through late June. Here is how the cluster, buybacks and private-markets backdrop fit together.

Jun 30, 20269 min

Market Mechanics

Inverite insider buys land as open banking heats up

Michele Marrandino bought Inverite shares on June 29 as open banking and Canadian fintech policy sharpen the backdrop for the micro-cap.

Jun 30, 20269 min