Founder & Developer — GFIL Trading
LiuDecai is an independent quantitative trader and the developer behind GFIL BOSS PANEL — a WebSocket-native trading terminal delivering institutional-grade data at under 50ms latency — and free trading calculators used by traders worldwide. Self-taught in financial markets, software development, and data engineering, LiuDecai builds tools that close the information gap between retail traders and institutions.
Open Source: pypi.org/project/gfil-calculators — MIT licensed, zero dependencies, Python + JavaScript.
GFIL BOSS PANEL — A browser-based trading terminal that delivers real-time WebSocket data at sub-50ms latency. Unlike REST-based platforms (TradingView, MetaTrader) that poll data every 500ms-3s, GFIL streams tick-by-tick data from 30+ instruments. Features include cumulative delta, volume profile, footprint charts, AI-powered market analysis, and built-in signal tracking.
22 free trading calculators — The largest collection of free, no-signup trading calculators on the web. From basic position sizing to advanced Kelly criterion optimization, every tool is built with mathematical rigor and transparent formulas. Available in 4 languages.
GFIL Trading Insights Blog — Educational content covering forex trading strategies, risk management, order flow analysis, and platform comparisons. 260+ pages across 4 languages with full Schema.org structured data.
Data asymmetry is the retail trader's biggest enemy. Institutions see order flow in real time. Retail traders see delayed, aggregated data. LiuDecai's mission is to bridge this gap with accessible, professional-grade tools that require no broker, no download, and no subscription — just a browser.
Every calculator must be mathematically verifiable. Formulas are published openly. No black boxes. No hidden assumptions. Traders deserve to understand exactly how their position size, risk, and profit targets are calculated.