The annual income is calculated from the difference between monthly total returns and split adjusted monthly price changes. (portfoliovisualizer.com)
Using monthly total returns for BOND and PTTRX during March 2012 through May 2014, he finds that: Keep Reading (cxoadvisory.com)
Using monthly total returns for SPY and IEF and monthly T - bill yield during July 2002 (inception of IEF) through December 2016, we find that: Keep Reading (cxoadvisory.com)