Feb 8 (Reuters) - Robinhood Markets Inc reported a 5% rise in fourth-quarter revenue on Wednesday, as interest income surged at the online brokerage in the wake of the U.S. Federal Reserve's rapid rate hikes through most of last year.

The Menlo Park, California-based company reported revenue of $380 million in the three months ended Dec. 31, compared with $363 million a year earlier.

(Reporting by Manya Saini in Bengaluru; Editing by Krishna Chandra Eluri)