Stocks aren't lottery tickets or get-rich-quick opportunities, but there are some promising investment opportunities in the market that can be transformational forces within a portfolio. If you have enough risk tolerance, you should consider a few stocks that are in the earlier, less certain stages of their lifecycle but also have enormous potential and clear competitive advantages. Sometimes, these businesses can blossom into cash flow machines at a much larger scale in the future.

These three stocks below have a lot of potential room for growth ahead -- if all goes right for them -- and getting in early could fuel returns that can transform a personal financial plan.

Shockwave Medical (NASDAQ: SWAV) is a medical device company that's produced a novel treatment called Intravascular Lithotripsy (IVL) to modify calcium buildups in the cardiovascular system. IVL is adapted from an effective treatment for kidney stones involving rapid sonic pulses from a specialized catheter that can remove dangerous accumulations of calcium in blood vessels.

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Source Fool.com