Embraer is trading 4.07% up at $78.58 after Reuters reported on November 4 that IndiGo is in early-stage talks to buy 100 regional jets, with an option for about 50 more. - The model and order size remain undecided; no deal is guaranteed. - Embraer’s São Paulo-traded shares rose 2.3%, outperforming the Bovespa’s 0.8% gain. - The potential order could be one of Embraer’s largest, a clear company-specific catalyst. Supplied context is the basis for the cited U.S.-traded price and change.