What is the ruling on buying and selling shares based on news related to company expansions, or circulating news about gatherings of speculators that temporarily raise the share price before it falls, and what are the regulations for this trade?

The process of buying and selling shares involves risks, and one must be wary of rumors to preserve wealth. Shares are divided into three categories: shares of prohibited companies (not permissible to trade), shares of permissible companies (permissible to trade), and shares of mixed companies that deal with usury (the preponderant opinion is that owning their shares is forbidden). The fundamental guideline is that the shares must be of companies whose work is permissible, while avoiding lying and deception.