The First Step to Breaking Free from Herd Mentality: A Mathematical Foundation Analysis of Automated Trading Auxiliary Indicators
The Korea Exchange's data for the first half of 2024 reveals a stark figure: the proportion of program and algorithmic trading by institutional and foreign investors reached an average of 68.7%. For individual investors, this manifests as a market where sharp intraday fluctuations of ±2% have become routine, not exceptional. The V-KOSPI index, a measure of expected volatility, consistently trades at levels 30-40% higher than the pre-pandemic five-year average. This environment systematically exploits the psychological vulnerabilities of retail investors—fear of missing out (FOMO) and loss aversion. The promise of automated trading systems and their myriad of auxiliary indicators (RSI, MACD, Bollinger Bands, etc.) is, fundamentally, a promise of reclaiming control in a chaotic system. However, most discussions focus on the "signal" these indicators generate, not the mathematical engine and its inherent assumptions that produce it. This is akin to drivi...