Shares of El Pollo Loco Holdings Inc. /zigman2/quotes/203043086/composite LOCO +0.08% were flat in extended trading Thursday after the fast-food chain announced fiscal fourth-quarter results. El Pollo Loco reported net income of $5.5 million, or 15 cents a share, compared with net income of $3.5 million, or 10 cents a share, in the year-ago quarter. Revenue increased 3% to $110.3 million from $107.5 million a year ago. Analysts surveyed by FactSet had expected net income of 15 cents a share on revenue of $110.2 million. El Pollo Loco's stock is up 8% this year. The broader S&P 500 index /zigman2/quotes/210599714/realtime SPX -0.48% has improved 5% in 2021.