Fitch Ratings said the deal would have "neutral" implications for YPF, whose depositary reciepts were trading up 3% in New York after initially spiking higher on Wednesday.
The company has a B- rating from the agency with a negative outlook.
Chevron, which after months of negotiations on Tuesday signed the exploration deal for 100 wells in the Loma La Lata Norte and Loma Campana areas, was up .45%
