SAN DIEGO – San Diego County Treasurer-Tax Collector Dan McAllister announced that Fitch Ratings reaffirmed the 'AAAf/S1' rating on the San Diego County Investment Pool.

This marks the 23rd year in a row the investment pool has received a 'AAAf/S1' rating, which is the highest rating category. The 'AAAf' rating reflects the investment portfolio's vulnerability to losses as a result of defaults in its bond holdings and is based on the actual and expected credit quality of the portfolio's investments.

The 'S1' Fund Market Risk Sensitivity Rating reflects the relative sensitivity of the por...