CNBC:

2019 was a historic year for the S&P 500, and the benchmark has two stocks to thank.

Apple and Microsoft, which surged 85% and 54% this year, respectively, together accounted for nearly 15% of the S&P 500′s advance in 2019, according to S&P Dow Jones Indices. Their influence to the cap-weighted index this year is greater than the next eight biggest contributors combined. The S&P 500 rallied more than 28% this year, its best annual performance since 2013.

Shares of Apple posted their best year since 2009 as investors shook off trade-induced worries and turned bullish on its services and wearable device businesses. With the launch of Apple TV, Apple Watch and Airpods, Apple managed to offset some of the loss from waning demand for iPhones. Enthusiasm for the upcoming 5G cycle has also lifted the stock.

Apple had its ups and downs but, from a stock market and share price POV, it was a spectacular year.