Which financial regulation prohibits unfair or deceptive practices in the sale of securities?

The Securities Act of 1933 is designed to ensure transparency in financial statements for investors and aims to eliminate fraud in the securities market. One of its key features is the prohibition of unfair or deceptive practices in the sale of securities. This means that any misleading information or omission that could influence an investor's decision is not allowed under this regulation. The Act requires that companies provide all material information about the securities being offered in order to allow investors to make informed decisions.

While the other acts listed focus on different aspects of securities law—such as the regulation of exchanges, requirements for investment advisors, or the specifics of trust indentures—they do not specifically address the prohibition of unfair or deceptive practices in the same comprehensive manner as the Securities Act of 1933. Therefore, the Act is the foundational legislation that protects investors from misleading practices in the sale of securities.