Answer:
Dhani is liable under the Securities Exchange Act of 1934, because the information on which he based his purchase of Eureka stock was "non-public"
Explanation:
The U.S. Securities and Exchange Commission (SEC) has laws against illegal insider trading which it defines as; "buying or selling a security, in breach of a fiduciary duty or other relationship of trust and confidence, on the basis of material, non-public information about the security."
As long as a company has not legally provided a piece of information to the public, then such information is considered "non-public".
Someone trading with non-public information is in a position to make more profits and as such, has an unfair advantage over other investors.
Dhani by trading with, and sharing "non-public information" with his friends, has committed illegal insider trading and is therefore liable under the Securities Exchange Act of 1934.