Information bias is the tendency to seek excessive information, believing that more data leads to better decisions, even when the extra information is irrelevant or misleading—a behavior often addressed in trading psychology. We make thousands of decisions on a daily basis. Some are tougher; some are easier. But usually, the best ones are those made quickly, before we are influenced by the...
I have four things for you this week: A very interesting market update given the turmoil in the markets this week A psychological bias that is super common and really hurts traders Position sizing tip to keep you in the game How to think about stop losses to improve your performance Let’s jump in...Stock Market Update for 15 March 2025This week was certainly not the most fun long side traders...
Loss aversion is a psychological bias where the pain of losing feels much stronger than the joy of winning—a core concept in trading psychology. In everyday life, this explains why people avoid selling a house at a loss, even if it's a rational decision, or why they hold onto outdated technology because they "paid too much to replace it." When it comes to stock trading, anyone can talk about...
The Disposability Effect is a cognitive bias where people undervalue things they already own, leading them to discard useful resources prematurely. Imagine buying a high-quality kitchen appliance, only to throw it away after a few minor issues instead of repairing it. This mindset isn’t just wasteful; it reflects a deeper illusion in trading psychology that can be financially devastating when...
As humans, we love to stay consistent with our past decisions even when they’re wrong. This is known as Commitment and Consistency Bias, a cognitive shortcut where we subconsciously justify and stick with previous choices to avoid the discomfort of admitting mistakes—one of many patterns explored in trading psychology. For example, imagine you bought an expensive gym membership at the start of...
The Decoy Effect is a well-documented psychological bias that subtly manipulates decision-making by introducing a target option that makes one of the other choices appear significantly more attractive. This subtle manipulation was first introduced in a 1982 study as the “Asymmetric Dominance Effect” and is now widely used in consumer choice strategies, pricing models, trading psychology, and...
The contrast effect is a cognitive bias where our perception of something is influenced by what came before it. Humans are particularly susceptible to this bias, especially when it comes to how we perceive stock prices and value. You would think a bottle of wine that costs $300 is cheap after looking at a list full of $1000 bottles, right? Now think of how this impacts institutional investors...
The House Money Effect is a psychological bias where people treat money they’ve recently won (or earned easily) as less valuable than their original capital. This leads to riskier decisions like a gambler taking bigger bets after a hot streak. This cognitive bias, borrowed from casino psychology, transforms how traders perceive and handle risk after periods of success—a pattern well recognized...
The Chaikin Money Flow (CMF) is a volume-based trading indicator developed by Marc Chaikin. It measures the volume of money flow into or out of a security over a given trading period, typically 21 trading days. The core principle behind CMF is that when closing prices are near the high on increasing trading volume, it indicates strong accumulation or distribution. Conversely, when closing prices...
The Woodie’s Pivot Points trading indicator is a set of calculated pivot point levels used by traders to identify potential support and resistance areas in the market. These types of pivot points help traders predict possible price reversals and breakouts by establishing key levels based on past price data. Unlike traditional pivot point calculation methods, which distribute weight evenly among...
Hyperbolic discounting is one of the most powerful yet least understood psychological forces in trading. This cognitive bias leads investors to choose smaller, immediate gains over larger future rewards, fundamentally altering how they approach position management and long-term strategy—a classic challenge highlighted in trading psychology. It's a pattern that repeatedly undermines thoughtful...
Have you ever refused to sell a stock at a loss because you “knew” it would recover? Or hesitated to buy because the price seemed too high compared to a past level? That’s anchoring bias, and it’s one of the most dangerous traps in trading. It tricks you into making decisions based on outdated price points rather than real-time market data. The best traders don’t anchor to the past—they adapt to...