New Strong Sell Stocks for September 19th

Group 1 - AZUL is one of the largest airlines in Brazil, with a significant number of departures and destinations, and its current year earnings estimate has been revised downward by 35.0% over the last 60 days [1] - Arch Resources is a major coal producer in the United States, operating nine mines, and its current year earnings estimate has been revised downward by almost 19.5% over the last 60 days [1] - Ambac is a holding company providing financial guarantees and services globally, and its current year earnings estimate has been revised downward by 10.3% over the last 60 days [1]