Alphabet's Google must sell its Chrome browser, share data and search results with rivals and take other measures - including possibly selling Android - to end its monopoly on online search, prosecutors argued to a judge on Wednesday.

The Justice Department is looking to break up one of America’s most powerful companies following a court ruling in September that found Google violated antitrust law. Shares of Google-parent Alphabet plunged over 5% Thursday after prosecutors outlined proposed remedies that would significantly alter how the search giant conducts its business.