...Ratings Affirmed: Trustmark Corp.'s (TRMK) ratings were affirmed at `BBB+' in August 2015 and continue to be supported by its good asset quality and the leading market share in TRMK's home state of Mississippi and growing market share in other parts of the Southeastern U.S. Good Franchise: TRMK continues to hold the highest deposit market share in the state of Mississippi. Fitch Ratings views this positively as it provides TRMK with relatively strong deposit and loan pricing power. TRMK maintains a solid core funding base owing to its strong deposit franchise, with core deposits representing 90% of total deposits as of 1Q15. Positioned for Rate Increase: While Fitch expects some deposit runoff as rates rise across the industry, TRMK's strong franchise, especially in rural markets, should position it well to retain a sound level of funding at reasonable costs. This should aid in managing rate risk as rates potentially rise toward the end of 2015 and into 2016. This view has been reflected...