Most brokers require your account to be around $2000 to convert it to or open a margin account. But yea it doesn't take much. I would never buy a pink on margins, nore most any other stock, thats a great way to lose more than you actually invested and get hit with a margin call. Pinks specially are bad to buy on a margin, if you can even do that. They are too dynamic, when you buy a stock with a margin, you got strict maintance levels your stock must stay above or you risk getting a margin call. If you don't put more money in your account as collateral then you will lose everything or at the very least most of your investment depending on how far it drops below the margin.
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