A little warning on margin calls. Some of you may already be aware of this, but I was not.
In one scenario, I was desparately fighting off margin calls late in the game. At this point I had sold off all the stock in my other companies, so all I could do was to have the company buy back stock. The margin call pops up at the beginning of a month. During the month I was able to get my account back into the black. However the end of the month was the end of the quarter and expenses came out, sent the stock price down, and sent my margin account back into the red. The broker immediately sold off all my shares because once you start selling your shares, the price goes down which means you have to sell more, which sends the price down,etc.
SO even though I had gotten my margin account back into the black, it does not turn off the margin call so when it checks at the end of the month, there is still an open margin call.
