Buffet didn't make the decision. It was someone else in the Berkshire operations. But I was dying to buy before the announcement when it broke $90. Buying a company with 30% ROI the prior year selling at 5 times free cash flow and a quality mote like Apple's is so obvious. You don't need...
Every broker provides a specific margin requirement. Usually around 2.5 times premium or 20% of the full vulnerability. But this is not a game you want to be playing. Personally, if I sell puts on 10 stocks, I feel safe with only 10% margin use during a vicious downdraft. Some of those will be...