Final answer:
The minimum initial requirement for buying 100 shares at $30 each would normally be $1,500, based on a general initial margin requirement of 50% of the stock purchase price.
Step-by-step explanation:
The minimum initial requirement when purchasing 100 shares at $30 in a new account would depend on the brokerage's account minimums and the Federal Reserve's Regulation T requirement, which generally sets the initial margin requirement at 50% of the purchase price of the stock. So, if you are buying 100 shares at $30 each, the total cost would be $3,000. Therefore, the minimum initial requirement would usually be $1,500, which is 50% of the total purchase amount. However, brokerage firms could require more than this minimum.