Craft beer is defined as any beer with less than 2 million barrels sold each year. In the overall beer market, it's a small segment, despite accounting for about $7 billion in annual sales.
The market share might be small, but the opportunity for investing profits is another story.
The two publicly traded companies have seen explosive growth in the last year.
Craft Brewers Alliance, with brands like Red Hook and Kona Brewing Company, trades on the NASDAQ and traded as low as $2.03 in the last 52-weeks. The stock has quadrupled since then.