The risk of loss of full return of principal is :
- Least for Treasury Bills because they are issued by the US
Treasury, and therefore are issued with the full faith and credit
of the US Government.
- Reverse repurchase agreements have higher risk than Treasury
Bills because they are agreements with banks and financial
institutions. However, their risk is lower than commercial paper
because reverse repurchase agreements are done for very short-time
periods
- Commercial paper has the highest risk because they are issued
by corporates, and have maturity upto 1 year