คลังความรู้

The article explains how missing ticker-date observations can undermine quantitative analysis when data is stored in long form. Causes include new listings, trading halts, delistings and corporate actions; the examples focus on stocks with different starting…

The article divides solo trading work into four roles: researching whether a market effect is real, engineering a tradable strategy, building a portfolio from strategies, and operating the resulting system. Each role calls for a different focus, from…

This brief excerpt raises the question of how a trader can tell whether a strategy has an edge. It points first to setting reasonable expectations for the profit and loss distribution, then to evaluating results after trading begins. It also suggests that…