You mean: they can get actual values of the news events before those values are released by the governments?
No, no one can ... such a group does not exist...
I think - there are people/websites/threads who are discussing the the probability of the price to be moved on some way based on the fundamental analysis and forecasts.
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The summary -
All about Calendar tab and Macro Economic Eventsmore -
- What is Fundamental Analysis and how use MT5 for that.
- What are the events and the available indicators in calendar tab?

- www.metatrader5.com
Forum on trading, automated trading systems and testing trading strategies
All about Calendar tab and Macro Economic Events.
Sergey Golubev, 2017.12.12 15:34
10 reasons to set up a professional economic calendar from MetaQuotes
Monitoring of macroeconomic events is available for free in 7 languages with no ads. However, this is not the only reason our calendar will attract your audience — you have another 10 extra reasons to add it in your website:
...
Forum on trading, automated trading systems and testing trading strategies
All about Calendar tab and Macro Economic Events.
Sergey Golubev, 2017.12.12 15:42
Economic CalendarThe beginning:
- Indicators/EAs for news and trading signals - the thread
- Economic Calendar EA - the thread
- Economic Calendar EA - the second thread
- News Trader EA thread (MT4)
- AvoidTheNews.mqh for short term systems - the thread with files
- News Reader Indicator! - the thread (MT4)
- FF Calendar Indicator for MT - the thread (MT4)
After
I listened to one successful Trader. He said it is a member of certain twitter group and the group is helping him to get the news ahead of its release
If you know any of such group, forum or ... Please Share. I love fundamental
you may want to follow forex updates on www.dailyfx.com. I am not marketing for them, but they really have some good neutral views most of the times!!

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If you know any of such group, forum or ... Please Share. I love fundamental