Companies whose shares are expected to trade actively during today’s session are Dell Inc. (NASDAQ:DELL), Tyson Foods, Inc. (NYSE:TSN), Audience Inc. (NASDAQ:ADNC), VIVUS, Inc. (NASDAQ:VVUS), Perrigo Company (NASDAQ:PRGO), TeleCommunication Systems, Inc. (NASDAQ:TSYS) and Green Dot Corporation (NYSE:GDOT).

stocks to watch

Dell Inc. (NASDAQ:DELL): The stock rallied 5.81 percent to $14 in early trading session as the company nears an agreement to sell itself to a consortium led by Michael Dell and Silver Lake Partners, a private equity firm. The deal is expected to be announced on Monday, according to Reuters.

Tyson Foods, Inc. (NYSE:TSN): The meat processor’s first quarter earnings rose 11 percent, beating Wall Street estimates. Tyson said beef and chicken sales increased on better margins and higher prices. Shares rose 2.5 percent to $22.68 in early trading.

Audience Inc (NASDAQ:ADNC): The audio processing firm revenues beat estimates and the company swung to profits during the fourth quarter. Audience said more people are using its technology on mobile devices. The company also gave stronger first quarter estimates. Shares rose 24.40 percent to $15.25.

VIVUS, Inc. (NASDAQ:VVUS): The pharmaceutical company said that clinical trials have demonstrated positive results for its Qsymia capsules. They said the drug lowers weight and also reduces certain associated risky conditions. Shares surged 4.20 percent to $12.60 in early market trading.

Perrigo Company (NASDAQ:PRGO): The nutritional and pharmaceutical products maker said its second quarter earnings rose 6.2 percent amid strong revenue growth in the consumer health sector. However, margin rates declined slightly. Perrigo also announced the acquisition of Velcera Inc (NDA) (PINK:VLCR), a pet-health company, for $160 million. Shares rose 6.84 percent to $107.38 in early trading.

TeleCommunication Systems, Inc. (NASDAQ:TSYS): The computer software company posted fourth quarter revenues and earnings that beat Wall Street estimates. The company saw strong results in TotalCom customer solutions, sales of navigation technology and revenue growth in 9-1-1 services. Shares rose 5.75 percent to $2.40 in early trading.

Green Dot Corporation (NYSE:GDOT): The company said its fourth quarter revenues grew 15 percent as consumer spending increased and it activated more cards. Green Dot markets debit cards through grocery stores, online and pharmacies. Shares were up 2.54 percent to $13.74 in early market trading.