The bar graph below shows the stock price of four different technology companies from 2011 to 2016. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The bar chart illustrates how much was the

stock

values of Facebook, Google, Apple, and Yahoo from 2011 to 2016.

Overall

, the

stock

price of Facebook gradually increased, and Google's

value

remained relatively stable over time.

While

Apple's

stock

value

followed an unstable trend, Yahoo's

value

decreased after six years. The

stock

price of Facebook was around 7,500 in 2011, and it moderately increased to just under 20,000 over the next five years. Yahoo's

value

was

also

roughly 7,500 at the beginning, and

then

slowly declined to about 3,000 in 2014 and 2015 before dropping to around 2,500

at the end

of the period. Apple's

stock

value

was just under 5,000 at the beginning, and just after one year it rocketed to over 30,000 level, experiencing the most drastic increase of the market. In 2013, it sharply dropped to approximately 7,000, and it varied between 12,500 and 2,500 over the next three years. Google's

value

remained relatively constant at roughly 1,000 from 2011 to 2016.