Almost four years ago we developed the Sessions product located in the top-left of the homepage. With the introduction of Market we decided to revamp Sessions with a new layout and a first-of-its-kind liquidity gauge. A red icon () indicates high liquidity, orange () indicates moderate liquidity, and yellow () means liquidity is low. Please read the user guide to learn more about Sessions.
The new layout increases pre-click information and shows the local time of each city, and the liquidity gauge is a unique indicator powered by our Market Data System (MDS). MDS was built from the ground up to supply data to the Market page, but it also collects valuable information about spreads and tick volume across seventeen brokers (and counting). Since spread size and tick volume can individually estimate liquidity, we built the liquidity gauge to combine both metrics. The calculations are listed in the user guide.
Fyi, the old version of Sessions will still run on the homepage until the new version is tested enough to replace it.
Posted by Scot, Forex Factory Senior Developer