I would guess that LLMs are biased towards making a positive assessment of ambiguous information, with specific social triggers prompting negative reaction.
Warren Buffett always said "...the best thing to do is buy a stock that you don't ever want to sell", but practically speaking the mean hold time for amateurs is around 2 to 4 months.
The stock market was built on information asymmetry, unfair positions, and ambitious gamblers... statistically it is rarely a reasonable investment for amateurs.