Two broad approaches to markets — plus a third Douglas adds. Fundamental analysis estimates intrinsic value from economics, financial statements, and metrics (P/E, P/B, D/E, ROI, ROA, EPS trends). Technical analysis reads price and volume on charts — trendlines, moving averages, volume patterns, momentum indicators — on the premise that supply and demand are already encoded in price. Mental analysis (trading-in-the-zone) studies beliefs and perception: why the same chart produces execution in one trader and self-sabotage in another.

Fundamental side

Aims to buy below true value and sell above it. Works across stocks (earnings, balance sheets), forex (GDP, CPI, trade data), and commodities (supply/demand fundamentals). Strength: grounded in cash flows and business reality. Weakness: slow, research-heavy; narrative can outrun spreadsheet updates in fast markets.

Technical side

Ignores stated intrinsic value; trades probable direction from historical price action. Strength: fast, applicable when fundamentals are disputed or lagging. Weakness: indicator overload — "endless list" of tools; what works on one stock may fail on another (market-specialization). CFI's indicator stack lives on trading-technical-indicator.

Neither camp has a monopoly on success. CFI's framing: both have rich and poor practitioners. Hybrid traders use fundamentals for what to watch and technicals for when to enter — common in anticipation and flow work at higher sophistication.

Relation to random walk

random-walk-theory declares both approaches futile for beating the market; active traders implicitly reject that and invest in one or both skill stacks.

Sources