[montag813]

Initial margin is 50%.

Nope. 25% for accounts above $25,000. Who's "ignorant"?

[Toddsterpatriot]

Nope. 25% for accounts above $25,000.

No, initial margin on a stock purchase is 50%. Maintenance margin is 25%.

According to Regulation T, you may borrow up to 50% of the purchase price of securities that can be purchased on margin. This is known as the initial margin.

http://www.investopedia.com/terms/r/regulationt.asp

Who's "ignorant"?

Of Reg T? That would be you.