ERJ Current Action: Embraer cleared a trendline Tuesday and is getting extended from this entry. The buy point was derived by using the stock's 10-week moving average as of Tuesday. ERJ is also teasing a 29.95 buy point in a new double-bottom base. Expect earnings on Aug. 9.Leaderboard Analysis: Embraer shot out of a flat base in strong volume on May 14. It rallied for several days before pulling back to its 50-day moving average. Embraer fell sharply below its 50-day line in heavy volume on June 28, but the stock recovered well.