Fear & Greed
Why do markets seem calm for long periods, only to move sharply when emotions begin to take hold?
There are moments when price movements feel measured and controlled, and others when they seem to accelerate with little warning. In those faster periods, decisions can begin to feel more urgent. Opportunities appear more compelling, risks feel more immediate, and the pace of change becomes harder to ignore. The shift is not always driven by new information. It often reflects a change in how that information is experienced.
This is where fear and greed begin to influence behaviour. These are not constant states, but they tend to emerge at different points in the market cycle. Greed often appears during rising markets, when confidence builds and participation increases. Fear tends to surface during declines, when uncertainty grows and the focus shifts toward preservation. Both emotions can amplify decision-making, pushing it away from measured analysis and towards more reactive responses.
The role of emotion in decision-making has been studied across psychology and behavioural finance, including the work of Daniel Kahneman, who explored how intuitive, fast thinking can dominate under pressure. When emotions are heightened, decisions are more likely to be influenced by immediate feelings rather than deliberate reasoning. The balance between reflection and reaction begins to shift.
In markets, this can be seen in the way trends accelerate. Rising prices can create a sense of urgency to participate, while falling prices can create a desire to reduce exposure quickly. In both cases, behaviour becomes more aligned with the prevailing direction. The emotional tone of the market begins to reinforce the movement itself.
What makes this difficult to recognise is that these responses can feel justified. Acting quickly during uncertainty or leaning into opportunity during strong trends can appear rational in isolation. The challenge is that when fear or greed becomes the dominant influence, decisions are shaped more by emotion than by underlying reasoning.
You may notice this in yourself when a rising market begins to feel increasingly compelling, or when a decline creates a stronger-than-usual urge to act. There can also be a tendency to interpret information differently depending on whether the environment feels positive or negative.
Fear and greed do not create market movements on their own, but they can shape how those movements are experienced, and how decisions are made within them.