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Date/Time: Sun, 06 Jul 2025 06:03:55 +0000



Post From: Data basics - who when what

[2019-03-16 11:16:44]
User97684 - Posts: 136
Hi ,

Pls help me understand the mechanics of data provision. I do use very long term volume profiles ( 3 years) and tick data is important to me.

So - am i correct ? ( Gain is my real time data provider) :

1. Gain gives me real time data, and Sierra gives me all the data prior to this very moment. So for example , at weekeneds, I can delete and download without even being connected to GAIN , and Sierra will provide all the data? Correct ?

2. At rollovers, when i press the 'perform rollover ' button, data starts being downloaded - and it is all coming from Gain ? Say I press rollover button at 12.00 midday Thursday, and Gain gives me that new contract data from the very beginning of Thursday ( after wednesday settlement ) and sierra provides the rest - or Gain provides all 3 years back of data? ( I tried rolling over at weekend but sierra did not provide the data )

3. Tha data that I accumulate by never ever switching my computer off, is all tick data, so very good quality. Is my charting using this data , or every time say i update new version of sierra and restart it, it loads the 3 years worth of minute data from Sierra's own servers ? Is there a way I can make charting use locally stored data rarther than download less accurate data from Sierra server?

Thank you very much