Shares of Southwest Airlines Co. /zigman2/quotes/201071949/composite LUV -0.85% fell 0.2% in premarket trading Thursday after the air carrier reported a fourth-quarter profit and load factor that missed expectations, while revenue rose a little above forecasts. Net income fell to $514 million, or 98 cents a share, from $654 million, or $1.17 a share, in the year-ago period, below the FactSet consensus for net earnings per share was $1.12. Chief Executive Gary Kelly said operational performance in 2019 was reduced by an estimated $828 million due to the grounding of Boeing Co.'s /zigman2/quotes/208579720/composite BA -0.17% 737 MAX planes. Revenue rose 0.4% to $5.73 billion, above the FactSet consensus of $5.72 billion. Load factor declined to 83.1% from 83.5%, while the FactSet consensus was for rise to 83.9%. Costs for available seat mile (CASM) rose 4.6%, and is expected to increase 6.0% to 8.0% for the first quarter. The stock rose 0.5% has over the past three months through Wednesday, while the Dow Jones Transportation Average /zigman2/quotes/210598063/realtime DJT +0.71% has gained 2.5% and the Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA +0.40% has advanced 8.8%.