Peter
Your total gain/loss % calculation is based upon the total of the five % gains less % losses and divided by 5 and reports my gain is 48.8%
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I have purchased the five shares I tipped and my net profit is about 30%
I have just loaded my five shares into Excel and included the $ gain or $ loss for the five shares since the start of year
Total of my five share prices is $43.465 at January 2 2018
Total of my five share prices is $61.715 at Sept 28 2018
Net Gain for my five share prices is $18.25 at Sept 28
$18.25/$43.465 represents weighted gain of 29.6%
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Are there any comments on choice of methods?