Yesterday we took a look at the S&P 500's biggest losers of 2015. The other side of the coin is Netflix, the top performing stock in the S&P 500 this year. It opened the year at 49 and is now sitting at around 119, for a gain of a stunning 144 percent.
In second place is Amazon.com, which is up 114 percent on the year. Like Netflix, Amazon.com is in the S&P 500's consumer discretionary sector, which ended up being the best-performing sector of the year. It's up 9 percent in 2015.
In third place is the video game company Activision Blizzard, which could also be considered a consumer discretionary stock but is classified by S&P as an information technology company. It's up about 95 percent on the year.