FOMO (Fear Of Missing Out)
The anxiety of chasing in late for fear of being the only one to miss out — the classic emotion that pulls up the tail end of a bubble.
In plain terms
FOMO is "Fear Of Missing Out" — the feeling of being afraid only you will miss a good opportunity. Hearing that others made money on some stock or coin, you anxiously chase in for fear of falling behind.
The problem is that by the time you chase in, the price has usually already risen a lot. So buying swept up in FOMO easily gets you stuck at the top.
What it tells you
FOMO is the emotion that pulls up the tail end of a market bubble. When people crowd in with the urgency of "this is the last chance" is paradoxically often the most dangerous time.
This phrase carries the lesson "judge by your own criteria," not "because others are earning." The moment you get swept up in crowd psychology, you easily lose composure.
Formula
FOMO = the crowd psychology of buying an already-risen asset late out of anxiety that "only I will miss out"
What high or low means
When an asset spikes and a mood spreads that "you'll regret it forever if you don't buy now" is when FOMO peaks. It is sometimes read as a signal to be the more careful for it.
When money that came in on FOMO starts to leave, those who chased in late often take the biggest losses.
A purchase swept up in FOMO lacks the judgment of "why am I buying." You should always ask yourself whether you are buying because you understand the value, not because others are earning. (This is a concept explainer, not a trading suggestion.)
Conversely, avoiding even good opportunities saying "FOMO is always bad" is not the answer either. The key is deciding by basis, not emotion.
Metrics to read alongside
See it in real stocks
Search US stocks on Stocklore to see FOMO and other financial metrics alongside the sector average.
This explanation is for information and reference only and is not a recommendation to buy or sell any security. Investment decisions and their consequences are your own.