There’s one investing rule more important than all others. It has nothing to do with stock picking or market timing. Although about 95% of all investment commentary in the mainstream media deals with these two aspects of investing, you’d be surprised how little these actually matter.

Position sizing is what matters, says Brian Hunt, editor in chief of Stansberry Research in yesterday’s Growth Stock Wire. Trading psychologist Dr Van Tharp says its how “great traders manage their money.”

Smart position sizing is easy: never risk more than 2% of your capital on any one trade.

That’s it. We told you it wasn’t complicated. But would be surprised how few traders and investors actually follow this rule.

Here’s how it works. Take it away, Brian…

Let’s say you’re a trader with a $50,000 “grubstake.” And you’re thinking about buying Intel at $20 per share.

How many shares should you buy? Buy too much and