Maryland is retaining its top grade from the three major bond rating agencies ahead of a March 15th sale of general obligation bonds. Fitch Ratings, Moody’s Investors Services and S&P Global all gave the state the coveted triple-A ranking it has held since 1993. State treasurer Dereck Davis says the top ratings help the state achieve a better interest rate when borrowing money for construction projects, saving taxpayers millions of dollars. Maryland is one of only 13 states to hold the triple-A rating.