The reason why the market doesn't move despite positive news can be multifaceted.
Expectation
The market may have already factored in the positive news before it becomes official, meaning that prices already reflect expectations rather than new news.
Quality and credibility of news
Not all positive news is of equal value or accuracy.
There may be doubts about the validity of the news or its actual impact on the market.
Other factors
There are many factors that affect the market at the same time such as economic reports, financial policies, geopolitical events or even global trends.
These factors may push the market in the opposite direction to positive news.
Economic Forecast
If there is an expectation that positive news will not last long or will not significantly impact economic growth, investors may be reluctant to push up stock prices or other investments.
Market correction
After a period of increase, the market may need a natural correction to return to a more balanced level even with positive news.
Algorithmic trading
Much of day trading is done by algorithms based on historical data rather than fresh news directly.
So positive news may not be enough to change the direction of the algorithms.
Fears and pessimism
Sometimes there is a general fear or pessimism among investors due to external or internal factors that may negatively affect the market, which prevents the market from moving despite positive news.
These are multiple and complex factors that reflect how financial markets work.
As it does not rely on one piece of news.
But on a complex set of factors
