PARIS, June 13 (Reuters) - Shares in France's biggest banks BNP Paribas, Societe Generale and Credit Agricole

Credit Agricole, BNP Paribas and SocGen all fell by between 2.4-2.7% in early session trading.

Macron's centrist Ensemble camp held a razor-thin edge over its main left-wing rival, according to results after Sunday's first round.

"In the first round, exit polls indicate that President Emmanuel Macron is at risk of losing his outright majority after a strong showing by the left-wing alliance in the first round of the country’s parliamentary election ... So a nervy wait ahead of the second round," wrote Deutsche Bank in a research note.

(Reporting by Sudip Kar-Gupta; Editing by Edmund Blair)