Fresh economic information, and regular news affect the Forex market instantly. Sharp moves in currency pairs can be seen as the news breaks out.
Quote information is transferred electronically through multinational companies such as Reuters, Bloomberg, and many more. Financial news passes through television, radio, and of course, the internet.
This real time behavior (almost) totally disables the ability of anyone to gain early information, thus creating equal conditions between all traders, from the smallest investor to George Soros.
In addition, major economic news, such as changes in interest rate, inflation reports, and other key economic indicators are published at a known time, and immediately reach all the world.
So, this high availability of data helps us traders to react quickly.