The best performing stocks of the 21st century include Keurig Green Mountain, Monster Beverage, Medivation and Middleby. The majority of the most successful stocks this century are service or product-based industries due to constant shifts in industries such as technology and the medical field.
The performance of a stock depends largely on the period of time during which its stock price is measured. For this reason, companies with the highest performances may not be those that generate headlines such as Apple or Comcast. Keurig Green Mountain, a coffee company that produces K-Cup brews, notably those sold in Starbucks around the country, saw returns of over 45,000 percent between 2000 and 2015. This far overshadows even Apple's return on investment, which clocks in above 1,500 percent between 1980 and 2012.
Monster Beverage, a well-known producer of energy drinks, has seen returns of around 40,000 percent as well. A $1,000 investment in these companies in the year 2000 would be valued at over $400,000 at the beginning of 2015. Medivation, one of several high-performing biotechnology stocks, returned over 14,000 percent of its value to stockholders over the same period. Middleby, a supplier of restaurant and home cooking equipment, has seen over a 10,000 percent return.