You want to form a value-weighted technology stock index using Apple, Google, and Microsoft.
Apple's adjusted closing price for 2016 is $115.82 and for 2015 is $105.26; Google's adjusted closing price for 2016 is $771.82 and for 2015 is $758.88; Microsoft's adjusted closing price for 2016 is $62.14 and for 2015 is $55.48.
The additional information that you gathered is their market values at the end of 2015 or beginning of 2016; in billions of dollars, Apple's market value is $630.94 B, Google's market value is $561.64 B, and Microsoft's market value is $487.83 B.
What is the annual return for your value-weighted technology stock index for 2016?