about the signal history

 
Why some of the signals have a long time history like 1 year or 2 years, but we never seen them before, and we can see the equity for only 1 or 2 month? 
 
hero216:
Why some of the signals have a long time history like 1 year or 2 years, but we never seen them before, and we can see the equity for only 1 or 2 month? 

Because these accounts have been trading for a long time before they were published by the providers.

 
luenbo:

Because these accounts have been trading for a long time before they were published by the providers.

thanks
原因: