The coloured dots (black, green, red or yellow) indicate the valuation of that share by Refinitiv (previously known as Thomson Reuters). These dots are shown on the 'My Holdings', 'Watchlist', 'Stock Research' and 'Target Portfolio' screens.
The dots can be interpreted as below:
Black = no valuation given
Green = that security is undervalued
Yellow = that security is considered 'fair' value
Red = that security is considered to be overvalued
Investors can use this information to help their decisions on whether to buy, hold or sell a security.