The investment portfolio can comprise a large percentage of earning assets so portfolio income is a significant contributor to the earnings of the Authority. The ideal investment portfolio mix will provide the necessary degree of liquidity while maximizing interest within prescribed risk levels.

As a general rule, government and agency securities will be purchased in block sizes of $500,000 and municipals in block sizes of $100,000. However, purchases may be made in smaller or larger block sizes in order to take advantage of a particularly attractive price as long as such purchases are in compliance with other guidelines of this policy.