24 years to earn your money back works out to a 2.9% annual rate of return, which is a little bit above both the 20 and 30 year treasury yields (~2.23%), reflec

24 years to earn your money back works out to a 2.9% annual rate of return, which is a little bit above both the 20 and 30 year treasury yields (~2.23%), reflecting a small but positive risk premium for a big blue-chip company that is generally seen as a low-risk investment. This looks like another example of how low interest rates cause stock valuations to run up until their long-term yields end up only slightly higher than bond yields. Investors expecting that rapid growth to continue might be disappointed.