Stocks end rough week on a down note, Nasdaq sheds over 1%

A rough week for the markets ends on a down note. Plus – Facebook’s terrible week weighs on tech. Can Zuckerberg and crew reverse this PR nightmare? And – March Madness is in full swing – but we have our own Final Round tournament – and it has a startup twist. Plus a look ahead to everything you need to know for the week ahead. Catch The Final Round at 3:55 ET p.m. with Jen Rogers and Yahoo Finance markets correspondent Andy Serwer, Myles Udland and Lee Munson.

Winners and losers

Stocks in the red today include Progenics as the FDA extended its review of one of its experimental treatments, Chipotle as investors take some money off the table following a pop in shares this week, and Micron Technology – shares of the chipmaker sliding after its said supply disruptions may affect current quarter production

Shares in the green include Nike as the world’s largest athletic wear retailer beat on earnings on an adjusted basis, with revenue topping estimates as well, KB Home as the Detroit-based homebuilder beat on earnings by a healthy margin, although it missed slightly on revenue, and Dropbox – shares soaring on the cloud company’s public debut, after initialing pricing at $21 a share. A good day for the former tech unicorn.