(For more market insights, including options activity, click on ; for the Day Ahead newsletter link.reuters.com/mex49s; for the Morning News Call newsletter, link.reuters.com/nex49s) U.S. stock index futures advanced on Friday, indicating the S&P 500 will rebound from its biggest daily decline since late August, ahead of a key report on the labor market. S&P 500 futures was up 0.28 percent, Dow Jones industrial average futures was up 0.09 percent and Nasdaq 100 futures was up 0.23 percent.
** TWITTER INC, Thursday close $44.90, up 1 pct premarket
The micro-blogging site's shares jumped 73 percent in a frenzied trading debut that drove the seven-year-old company's market value to around $25 billion and evoked the heady days of the dot-com bubble.
** SANTARUS INC, Thursday close $23.22, up 37 pct after market
** SALIX PHARMACEUTICALS LTD, Thursday close $71.31, up 9.3 pct after market
Salix said it will buy Santarus for about $2.6 billion, gaining two new gastroenterology drugs to strengthen its leading presence in that market.
** TREMOR VIDEO INC, Thursday close $9.26, down 38 pct premarket
The online video advertising provider reported lower-than-expected third-quarter results on Thursday and cut its revenue forecast for 2013. Canaccord Genuity cuts its rating on the stock to "hold" from "buy" and its price target by $3.50 to $9.
** TESLA MOTORS INC, Thursday close $139.77, down 3.2 pct premarket
Tesla's shares continued their fall since Thursday when the company reported the third fire in its Model S luxury electric car in six weeks, this time after a highway accident in Tennessee.
** CHEMOCENTRYX INC, Thursday close $4.67, up 7 pct premarket
The company reported a smaller-than-expected quarterly loss due to lower expenses and higher revenue from its partner GlaxoSmithKline Plc, which is funding Chemocentryx drug to treat a disease that causes inflammation of blood vessels in the kidney.
** SEQUENOM INC, Thursday close $1.70, up 23 pct after market
The genetic testing company reported a smaller-than-expected third-quarter loss on Thursday due to higher sales of its prenatal test designed to detect fetal chromosomal abnormalities.
** DURECT CORP, Thursday close $1.54, down 20 pct after market
The drugmaker said it is offering shares in an underwritten public offering. The company had about 102 million shares outstanding as of Thursday.
** INSULET CORP, Thursday close $37.05, down 8 pct after market
The medical device maker reported a much bigger-than-expected third-quarter loss on Thursday as operating expenses rose due to the settlement of a patent lawsuit with Medtronic Inc and the launch of a version of its insulin management system OmniPod.
** MONSTER BEVERAGE CORP, Thursday close $57.11, down 5 pct after market
The energy drinks maker reported a third-quarter profit that missed analysts' estimates, hurt by legal costs related to its Monster Energy drinks. [ID: nGNXUZECRa]
** PRICELINE.COM INC, Thursday close $1022.89, up 1.6 pct premarket
The online travel agency known for its name-your-own price auction, posted a higher-than-expected quarterly profit on Thursday as bookings increased.
** AIR METHODS CORP, Thursday close $44.02, up 14.6 pct after market
The company, which provides air medical transport services, reported better-than-expected revenue in the third quarter, due to an increase in net revenue per patient transport.
** ACCURAY INC, Friday close $6.81, up 7 pct after market
The radiation therapy provider reported first-quarter revenue that beat analysts' estimates as it installed 14 systems in the quarter, increasing the number of systems installed worlwide to 706.
** U.S. SILICA HOLDINGS INC, Thursday close $32.74, down 4.3 pct premarket
Analysts at Jefferies & Co lowered their 2015 earnings estimate for the commercial silica maker, citing delayed start-up of Greenfield site near Utica, Illinois. Analysts at Cowen & Co lowered their full-year 2014 profit outlook to account for lower-than-expected volumes of industrial and specialty silica products, and expected fall in sales of resin coated sand.
** AVG TECHNOLOGIES NV, Thursday close $19.70, down 10 pct after market
The anti-virus software maker reported lower-than-expected third-quarter revenue on Thursday and forecast current-quarter revenue well below expectations, prompting brokerage J.P. Morgan Securities to cut its rating to "neutral" from "overweight" on the company's stock. Cowen & Co lowered its price target to $18.50 from $22 on the stock.
** WALT DISNEY CO, Thursday close $67.15
The company reported a 12 percent gain in profit that beat Wall Street expectations, lifted by higher visitor spending at U.S. theme parks, increased consumer product sales and its summer animated movie hit "Monsters University." Shares of Disney, which have gained nearly 35 percent this year, slipped 1.8 percent in after-hours trading to $65.94.
** MOLYCORP INC, Thursday close $4.76
The rare earths producer has seen demand and prices for its products rise from their second-quarter lows, the company's chief executive said on Thursday, although the company reported a wider third-quarter loss.
** BLACKBERRY LTD, Thursday close $6.5
The smartphone maker will pay its new interim CEO a base salary of $1 million, a bonus of up to twice that amount as well as stock awards potentially worth some $85 million, in the hopes of turning around Canada's most prominent technology company.
** COCA-COLA CO, Thursday close $40.05
The company said it will invest over $4 billion in China and build new plants between 2015 and 2017, to counter competition which is chipping away at its share of the country's 421 billion yuan ($69.12 billion) soft drinks market.
** PIXELWORKS INC, Thursday close $4.39, down 8.8 pct after market
The digital display chip maker's third-quarter results came in below analysts' expectations on Thursday due to lower chip revenue.
** GROUPON INC,Thursday close $9.50, up 1.3 pct premarket
The daily coupon website reported a third-quarter profit that beat analysts' estimates as strong growth in North America helped offset a decline in international revenue.
** SPROUTS FARMERS MARKET INC, Thursday close $46.58, down 4.8 pct after market
The retailer of natural and organic foods on Thursday said affiliates of Apollo Global Management LLC, and certain other stockholders, will sell up to 22.5 million shares in a secondary offering.
** AMARIN CORP, Thursday close $1.41, up 6.3 pct after market
The drugmaker reported a smaller-than-expected third-quarter loss on Thursday as sales of its fish-oil drug Vascepa, which lowers a type of blood fat, jumped 52 percent from the second quarter. Total prescriptions for Vascepa were up 58 percent from the preceding quarter, Amarin said in a statement.
** FIREEYE INC, Thursday close $38.03, up 9 pct after market
The technology firm that helps companies fend off cyber attacks, gave a revenue outlook for 2014 that came in ahead of Wall Street forecasts as it posted results for the first time since it went public in September in one of this year's hottest IPOs.
** GAP INC, Thursday close $37.75, up 8 pct after market
The apparel chain's October same-store sales rose 4 percent, well ahead of the analysts' average estimate of 0.1 percent.
** ARENA PHARMACEUTICALS INC, Thursday close $4.08, up 5 pct after market
The company said Japanese drugmaker Eisai Co Ltd will market its diet drug in most markets worldwide as part of an expanded agreement, under which the companies will also develop the drug for other indications.
** NOVATEL WIRELESS INC Thursday close $2.17
The company, which makes USB modems and wireless modem cards for PCs, reported quarterly lower-than-expected revenue and forecast fourth-quarter results below market expectations, blaming rising competition for business with a customer.
** TALISMAN ENERGY INC Thursday close $11.71
The company said it would sell a stake in some of its natural gas assets in British Columbia's Montney field to Malaysia-controlled Progress Energy Canada Ltd for C$1.5 billion ($1.44 billion) as it restructures global operations.
** JOHNSON & JOHNSON, Thursday close $92.69
Healthcare conglomerate Danaher Corp DHR.N has teamed up with Blackstone Group LP BX.N to bid for the company's diagnostics unit, which makes blood screening equipment and laboratory blood tests and could fetch more than $4 billion, according to people familiar with the matter.
** NVIDIA CORP, Thursday close $14.54, up 2 pct after market
The graphics chipmaker gave a revenue forecast for the current quarter that was shy of Wall Street's expectations as the company faces tough competition in tablets and a slow personal computer market.
** GENCO SHIPPING AND TRADING LTD, Thursday close $2.66, down 2.2 pct after market
Analysts at Wells Fargo Securities said the dry bulk shipper, which has short-term debt of $1.5 billion, was likely to breach its debt agreements. "It remains increasingly unlikely that Genco Shipping will be able to maintain covenant compliance through March 31, 2014," analyst Michael Webber said.
** COSTA INC, Thursday close $19.98
Essilor International said it would buy Costa, a maker of premium sport sunglasses, in a $270 million deal that would help the French company tap into the growing prescription sun lens market. (Compiled by Natalie Grover; Editing by Don Sebastian)