The solid green light indicates that the market(s) is open
and a price update can occur at any time.
The flashing green light means the market has opened but
active trading hasn't yet begun. This is often the situation
after New York has closed and the Sydney market is just waking
The red light goes on when the market(s) is closed. When
it's displayed on the New York table the price shown is the
day's market close. A red light on the Asia/Europe table simply
reflects the last price quoted from what is usually the London
You will rarely see a yellow light since it indicates an
irregularity somewhere. Reasons for displaying a yellow light
in the Asia/Europe table could be that one of the major markets
are on holiday. The New York table might display a yellow
light if we feel the data may be less reliable than usual
for whatever reason.