Arbiter Quant

Vietnam has 7 million retail trading accounts on a $200B market with almost no access to professional research tools. As someone close to this market, I built the tool I wished existed — a quant desk that speaks Vietnamese and reasons in Vietnamese market context. The core idea: don't predict price — pick the right method for the current market. Arbiter classifies each trading day into a named market regime (e.g., bull_choppy, sideways_low_vol) using six features: trend, volatility, breadth, foreign flow, session phase, and news intensity. It then mines historical days that match today's regime and asks Claude Opus 4.7 to allocate 3-6 diversified paper trades across 11 strategies, citing bucket statistics, news sentiment, upcoming macro events, and the live portfolio in a single prompt.