Stock index futures signal higher Wall Street open

Stock index futures pointed to a higher open on Wall Street on Friday after losses in the previous session, with futures for the S&P 500, the Dow Jones and the Nasdaq 100 rising 0.3 to 0.4 percent.

U.S. employment probably only inched up in July as the economy struggled to regain momentum, strengthening expectations of additional monetary stimulus from the Federal Reserve. Non-farm payrolls likely rose 100,000 last month, according to a Reuters survey, after gaining 80,000 in June.

The Institute for Supply Management releases its July non-manufacturing index at 1400 GMT. Economists in a Reuters survey forecast a reading of 52.0, versus 52.1 in June.

Professional networking site LinkedIn Corp reported higher-than-expected revenue and raised its full-year outlook as it pocketed more money from subscribers, services aimed at businesses and advertising. Its shares were up 5.3 percent in late trading on Thursday.

Economic Cycle Research Institute releases its weekly index of economic activity for July 27 at 1430 GMT. In the prior week the index read 122.8.

NYSE Euronext , the transatlantic exchange, booked a 9 percent drop in net revenue and a 20 percent fall in net income for the second quarter, driven by losses across its three main business lines. Other major companies announcing results on Friday include Procter & Gamble and Viacom .

According to Thomson Reuters StarMine, 73 percent of the S&P 500 <.SPX> companies have already reported results, of which only 29 percent have missed forecasts, while 71 percent have met or beaten consensus. U.S. earnings have been 4 percent higher than estimates.

Knight Capital Group Inc fought for survival on Thursday after a $440 million trading loss caused by a software glitch wiped out much of its capital, forcing Knight to seek new funding as its shares plunged as much as 80 percent in two days.

Touchpad maker Synaptics Inc forecast first-quarter revenue below analysts' estimates on slowing PC sales and lower revenue from the mobile phone segment, sending its shares down 4 percent in extended trade.

Diamond retailer Blue Nile forecast a strong full year after robust demand spurred by lower prices helped it to beat analysts' profit expectations for the first time in over a year. Its shares were up 18.8 percent in late trading on Thursday.

European stocks <.FTEU3> rose 0.6 percent on Friday after the previous session's sharp pull-back as investors awaited U.S. jobs data that could potentially fuel expectations of further stimulus from the Federal Reserve.

U.S. stocks fell for a fourth day on Thursday after European Central Bank President Mario Draghi disappointed investors hoping for immediate action to contain the euro zone debt crisis.

The Dow Jones industrial average <.DJI> fell 92.18 points, or 0.71 percent, to 12,878.88. The S&P 500 Index <.SPX> dropped 10.14 points, or 0.74 percent, to 1,365.00. The Nasdaq Composite <.IXIC> lost 10.44 points, or 0.36 percent, to 2,909.77.

(Reporting by Atul Prakash; editing by Stephen Nisbet)