Your risk level is determined by a simple algorithm calculating the compounded average beta of your portfolio.

'Beta' is a measure of a stocks' volatility in relation to the market or index it's compared to.

A Beta greater than 1 means the stock, on average, will gain a larger percentage than the market when it goes up and loose more than the index when it goes down.

Beta is the basic measure used to determines a stocks risk or volatility.

Most Beta figures are calculated 5 years back on the stocks historical prices.