Vasileios Koutsokostas

Vasileios built Verity Signals after spending years tracking SEC Form 4 insider filings manually — cross-referencing EDGAR data, filtering out noise, and isolating the discretionary open-market purchases that academic research consistently shows carry the most predictive signal. When the filtering process was automated and results showed consistent alpha, the natural step was to make it available to retail investors.

He works on the trading team at Plum Fintech, where his focus is financial data pipelines, data quality, and market microstructure. That background directly shapes how Verity Signals is built: as a rigorous signal-filtering layer on top of public SEC data, applying the same standards used in institutional quantitative research.

Every article published on Verity Signals is based on primary source data from SEC EDGAR and reviewed against the scoring methodology described in the Verity Signals whitepaper.