Based on feedback I’ve received from readers, I’ve made some changes to the reporting methodology. None of the actual trades or data have been altered in any way. I’ve just changed how they are reported.
All month-to-month results start at the close of the last trading day of the prior month and end at the close of the last trading day of the next month. This is true for both PDS results and those of the benchmark index.
The only exception to this is the first month of reporting. Since PDS trades at the open, there will be no data available before the open of the starting month. To make a direct comparison with the benchmark index, tracking of it also begins on the open of the first day of tracking, rather than at the close of the last day before tracking begins.
With commissions and the benchmark index, commissions are only counted once, at the open of the trade, as this replicates buy-and-hold.
I hope this clears up any confusion from previous reporting.
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The ALKS debacle really punished the system performance in October. That trade was the worst single trade loss of the last 10 years.
I will have more analysis of the effect of the ALKS trade on the system as well as Year-To-Date results, published this weekend.
Wood,
ALKS surely did screw up the October results, because I missed that one and taking mostly 1% trades came out almost as well as I did in September.
Glad to hear it Hawaii!
I can see how the ALKS trade really was a curve ball. I read somewhere that ALKS was the largest single day fall (including pre-market trading) in NASDAQ history – a fall of about 50%. Fortunately, it opened somewhat higher. I don’t consider the result to be that bad, given what can only described as bad luck.
Yes, bad luck for sure, but a reality nonetheless when trading a system.
Wood,
That is my new e-mail.
jog on
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