Apr 25 (Reuters) - Spain's main stock index closed its fourth consecutive session in the red on Tuesday, the worst run since early December, after a series of mixed results on both sides of the Atlantic and weak economic data dampened investors' appetite for risk.

In the U.S., consumer confidence fell to a nine-month low in April, pushed down by an increasingly gloomy outlook that portends a near-term recession, according to a survey by The Conference Board, accentuating losses on Wall Street.

"There's a lot of uncertainty. People still don't know how much bank lending has been affected by recent events (...) or when inflation will peak on a lasting basis," said Prashant Bhayani of BNP Paribas Wealth Management.

Spain's Ibex-35 closed down 116.10 points on Tuesday, down 1.23%, to 9,290.30 points, marking its worst session in a month.

The FTSE Eurofirst 300 index of large European stocks lost 0.33%.

In the banking sector, BBVA fell 2.44%, Caixabank dropped 1.69%, Sabadell fell 4.41%, Bankinter dropped 0.25%, and Unicaja Banco lost 1.63%.

Among the large non-financial stocks, Telefónica fell 0.97%, Inditex advanced 0.19%, Iberdrola gained 0.08%, Cellnex fell 0.32%, and the oil company Repsol lost 0.11%.

Among the other electricity companies, Naturgy fell 0.21%, while Endesa advanced 0.56%.

Santander fell 5.97%, after publishing a first quarter net profit that exceeded forecasts and revealing a reduction in earnings in Brazil and the United States.

Gas network operator Enagás dropped 1.98%, after announcing that its March net profit fell 21%, affected by lower revenues from its regulated business in Spain.

(Reporting by Benjamín Mejías Valencia; additional reporting by Amanda Cooper; editing by Juana Casas)