...Franchise Supports Rating: Trustmark Corp.'s (TRMK) ratings continue to be supported by its strong market share in TRMK's home state of Mississippi and growing market share in other parts of the Southeastern U.S. Fitch Ratings regards the company's deposit franchise as a rating strength and as having a higher influence on its rating. Lower and Less Volatile Credit Losses: Fitch believes TRMK has solid underwriting standards, supported by the company's consistent profitability and relatively low net charge-off (NCO) levels in aggregate during the financial crisis -- especially when compared with regional and national peers of similar size. TRMK has experienced roughly one-quarter fewer NCOs compared with regional peers over the past 45 quarters and 50% less than national peers. Manageable Energy Exposure: TRMK's energy-related exposure is considered manageable. At 3Q16, TRMK reported $476 million of energy sector exposure with outstanding balances of $256 million, or 3.4% of total held-for-investment...