Tracking the week's ups and downs in the business of entertainment.

DOWN: Mark Zuckerberg

Facebook's chairman loses $5.6 billion between the company's May 18 IPO at a $38 stock price and its June 4 close at $26.90. Some analysts predict an even further slide.

UP: Kathleen Kennedy

The producer is named co-chair of Lucasfilm, positioning her to succeed George Lucas atop the Star Wars studio and jump-start its creative ambition.

DOWN: Russell Brand

The Brand-hosted MTV Movie Awards tumbles 29 percent in total viewers, with 3.2 million watching the latest Twilight best The Hunger Games for movie of the year.

DOWN: Nicollette Sheridan

An appeals court deals the former Desperate Housewives actress a setback in her wrongful termination lawsuit, putting on hold a planned September retrial amid questions about her case.

SHOWBIZ STOCKS

UP: Avid Technology (AVID)
$7.40 (+10.8%)

Some see a buying opportunity in the maker of audio, video and editing tools after its stock dropped almost 40 percent in three months.

DOWN: Tivo (TIVO)
$8.13 (-11.3%)

After disappointing quarterly earnings for the DVR pioneer, TheStreet Ratings cuts its recommendation to "sell" from "hold."