( CNN ) -- From tycoon bankruptcies to billion-dollar takeovers , 2013 has been a roller coaster year in business . As 2013 draws to a close , CNN takes a look at some of the winners and losers of the last 12 months . Some of the highlights include Nick D'Aloisio , the 18-year old tech wunderkind , who sold his app to Internet giant Yahoo ! ; Spanish billionaire Amancio Ortega , who rose to third on the Forbes rich list and incoming Federal Reserve Chair Janet Yellen , soon to become the first woman to take the helm at the world most powerful central bank . Have we missed someone ? Tell us who you think is the biggest winner or loser of 2013 in the comments section below .
the last 12 months has been a roller coaster year in business that has made and broken millionaires . Forbes taps the biggest winners , including Thorsten Heins , Janet Yellen and Nick D'Aloisio . CNN counts Thorsten Heins and Thorsten Heins among the business losers .