Portfolio Yield Error
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Posted by George on July 11, 2004 at 23:53:49:
I believe there is an error when calculating the yields that are displayed when displaying a portfolio graph. I'm running the latest version, 6.8. Here is an example of what I'm seeing, not my actual numbers. Say the Portfolio Gain-H graph is used. The beginning date is 3/25/99 and the ending date is 7/9/04. On 3/25/99 the portfolio suffered a $10000 loss. The yield displayed for the entire length of the graph, the "gph" yield is 6.5%. I change the beginning of the graph to 3/24/99 which the portfolio had a big gain of $40000. The "gph" yield is now 5.8%?? No way can the yield be lower when I move back one day that had a large gain. The "gph" yield has to be more than 6.5%, not less. I think this error was introduced after version 6.6. I went from 6.6 to 6.8, skipping 6.7. I believe the yield was acting correctly on 6.6. Its like the yield calculations is no longer considering the gain/loss the portfolio receives on the beginning day of the graph.
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