US Russ 2000 is a CFD product offered by OANDA with the Russell 2000 as its underlying reference asset.

The Russell 2000 comprises small-cap stocks ranked between 1,001st and 3,000th by market capitalisation.

Along with the Russell 1000, which represents large-cap stocks, and the Russell 3000, which covers approximately 98% of the total US stock market capitalisation, the Russell 2000 is widely used as a benchmark by institutional investors.

Further reading: What are stock market indices? How to invest in them?