# Data accuracy

**URL:** <https://forums.collective2.com/t/data-accuracy/7129>\
**Category:** C2\
**Created:** [July 26, 2013, 10:03am UTC](https://forums.collective2.com/t/data-accuracy/7129 "2013-07-26T10:03:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![QunYu3](https://avatars.discourse-cdn.com/v4/letter/q/4bbf92/32.png) [@QunYu3](https://forums.collective2.com/u/QunYu3)\
**Post date:** [July 26, 2013, 10:03am UTC](https://forums.collective2.com/t/data-accuracy/7129/1 "2013-07-26T10:03:16Z")

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Hi Matthew,  
  
  
  
My system is one month old today, currently my accumulative $ is $2773,  
  
which is up more than 5%, but the return is recorded as -1%, how is that possible?  
  
  
  
I calculated all my profit and loss including the open P/L, I have positive return for sure.  
  
  
  
Any explanation?  
  
  
  
Qun

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<div class="post-metadata">

**Author:** ![MatthewKlein](https://yyz2.discourse-cdn.com/flex028/user_avatar/forums.collective2.com/matthewklein/32/21382_2.png) [@MatthewKlein](https://forums.collective2.com/u/MatthewKlein)\
**Post date:** [July 26, 2013, 10:11am UTC](https://forums.collective2.com/t/data-accuracy/7129/2 "2013-07-26T10:11:48Z")

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First of all, stats are calculated periodically. The stats on your system page were last calculated at 8:57 am, before the markets opened this morning. So your results don’t include currently marked-to-market positions using today’s prices (yet).  
  
Second, please remember that your system subscription fee is included in results. This means your results will be lowered by the monthly fee you choose.  
  
I assure you the results are accurate (based on 8:57 AM data). When your system gets updated again, the results will be updated as well.