Check out which companies are making headlines before the bell:
Dish Network (NASDAQ: DISH) — The satellite TV company earned 76 cents per share for its latest quarter, 7 cents above estimates. However, revenue was below forecasts, and the company also reported that broadband and net pay-TV subscribers declined.
Newell Brands (NYSE: NWL) — The consumer products maker was downgraded to market perform from outperform at Wells Fargo, which points to a difficult U.S. macroeconomic environment, lower than expected first-quarter earnings and exposure to the pressured shopping-mall market.
Dunkin' Brands (NASDAQ: DNKN) — The restaurant chain was upgraded to outperform from sector perform by RBC, which notes the potential for cash being returned to shareholders, among other positive factors.
Twitter (NYSE: TWTR) — CEO Jack Dorsey bought 574,000 more shares of the company, according to an SEC filing. Dorsey has now purchased 1 million Twitter shares this year.
Cardinal Health (NYSE: CAH) — The drug distributor reported adjusted quarterly profit of $1.53 per share, 7 cents above estimates, though revenue came in somewhat below Street forecasts. The company did give a full-year earnings outlook that falls largely above consensus forecasts.
Valeant Pharmaceuticals (Toronto Stock Exchange: VRX-CA) — The drugmaker announced that it has scaled down its debt load by an additional $220 million, after the sale of three skincare brands closed earlier than anticipated.
Fitbit (NYSE: FIT) — The fitness device maker responded to reports that one of its devices had exploded, saying a third party firm had tested the device and concluded that the Fitbit Flex 2 in question did not malfunction. The company said the test showed that external forces caused damage.
BHP Billiton (ASX: BHP-AU) — BHP shareholders in Australia will be meeting with activist investor Elliott Management this week, according to Reuters, as the firm pushes for changes at the world's biggest mining company.
Las Vegas Sands (NYSE: LVS) , Wynn Resorts (NASDAQ: WYNN) — Casino revenue in Macau rose 16.3 percent in April, near the high end of analyst estimates, possibly boosting stocks of companies that operate casinos there.
Tribune Media (NYSE: TRCO) — Tribune now has a possible additional suitor. The Wall Street Journal is reporting that 21st Century Fox (NASDAQ: FOXA) is joining the fray in partnership with Blackstone (NYSE: BX). Sinclair Broadcast Group (NASDAQ: SBGI) and Nexstar Media (NASDAQ: NXST) are also said to be in the bidding for the TV station operator, with final bids due this Thursday.