While they may appear similar at first glance, they are calculated differently. Keltner channels typically use an Average True Range (ATR) to measure volatility around a moving average, while Bollinger Bands use standard deviation to determine how far price is moving from its average.

This post builds on our Question of the Week and expands on how I think about measured move setups, specifically the 1-2-3-4-5 structure. Measured moves can both resolve and fail, depending on momentum, follow-through, and other data involved like $SPY phantom prints.

Question of the Week: What is the AB=CD Pattern? The AB=CD pattern is a classic harmonic structure used in technical analysis to identify potential areas of price symmetry. It focuses on measured moves within the market, where an initial price leg (AB) is followed by a corrective move (BC), and then a subsequent leg (CD) that often mirrors the length and duration of AB. I treat patterns as frameworks, not checklists.