Companies growing at a breakneck pace often don’t come cheap, but investors who hold on for years as that growth plays out can be rewarded handsomely if things go right. If you’re on the prowl for some high-growth stocks for your portfolio, take a look at MercadoLibre (NASDAQ: MELI), Vertex Pharmaceuticals (NASDAQ: VRTX), and Investors Bancorp (NASDAQ: ISBC). You won’t be disappointed.