In simple terms
A bullish bias is the working view that a market is more likely to rise than fall over a stated horizon. It is an interpretation, not an order: a trader can be bullish and remain flat.
View, trigger, and position
Bias guides the scenario under study; a trigger defines when action is allowed; a long position is actual exposure after execution. Treating them as one thing turns an unconfirmed forecast into a trade. Instrument, horizon, supporting evidence, and invalidation make the view testable.
When the view becomes a filter
A bullish view is not automatically a cognitive error. It becomes one when only favorable information is admitted or invalidation is moved to protect the conclusion. Writing both confirming and disconfirming conditions before entry helps expose that behavior. A bullish bias does not itself prove that a valid long setup exists or that prices will rise.
Sources
- CME Group, Trading Strategies in Your Trade Plan — Places setups, triggers, and exits inside a defined plan.
- Investor.gov, Investor Bulletin: Behavioral Patterns of U.S. Investors — Reviews behaviors and preferences that can weaken investment decisions.