By Amanda Cooper
LONDON, May 7 (Reuters) - European shares edged up in early trade on Wednesday after a flurry of results that pushed up shares in French cement maker Lafarge <LAFP.PA>, but weighed on insurers Aegon <AEGN.AS> and Axa <AXAF.PA>.
Lafarge shares were the biggest percentage gainers on the European market, rising by more than 6 percent after the world's largest cement maker beat forecasts with a 48-percent rise in first-quarter operating profit.
British American Tobacco shares rose by nearly 3 percent after the company posted a 17 percent rise in first-quarter earnings.
By 0828 GMT the FTSEurofirst 300 index <
> of top European shares was up 0.2 percent at 1,353.72 points, with advancing issues outnumbering decliners by two to one.Analysts warned about excessive optimism over earnings as the outlook for the global economy was still fairly opaque, the credit crisis was still a long way from being solved and the oil price <CLc1> was at record highs above $122 a barrel.
"Whatever results come out are not going to make any sense in the next quarter because people have to reset their expectations lower...that has to then be reflected in the prices," said Justin Urquhart Stewart, investment director at Seven Investment Management.
Aegon shares were among the largest drags on the index, falling 1.1 percent after the company posted a 78-percent drop in first-quarter net profit.
"The underlying life profit was in line with expectations. However the new sales and new value of the sales and investment result was lower than we expected," said analysts at Rabobank in a note.
Axa fell 1.4 percent after Europe's biggest insurer said first-quarter group sales fell 2.7 percent and turnover was hurt by adverse foreign exchange rates and the credit crisis.
Banks were among the worst performing sectors, led by UBS <UBSN.VX>, Societe Generale <SOGN.PA> and UniCredit <CRDI.MI>, which were all down between 1 and 2 percent.
Ratings agency Moody's on Tuesday cut its outlook for UniCredit debt to "negative" from "stable" after the Italian bank unveiled writedowns last month.
Commerzbank <CBKG.DE>, which warned its profit target for the year was drifting out of reach after unveiling 244 million euros' worth ($377.9 million) in writedowns, rose by more than 1 percent.
German-based traders pointed to the results from the group's trading division and analysts said the overall results were roughly in line with expectations.
Shares in Germany's Henkel <HNKG_p.DE> were up 4.4 percent after the cosmetics and detergents group's results beat forecasts, making it one of the top percentage gainers on Germany's DAX index <
>.European shares were also underpinned by a rally on Wall Street the day before, where some concern over the outlook for the housing and credit markets was relieved by housing finance company Fannie Mae <FNM.N> saying the worst of the credit turmoil may have passed.
Around Europe, London's FTSE 100 <
> rose 0.4 percent, while Frankfurt's DAX < > gained 0.5 percent and Paris' CAC 40 < > rose 0.2 percent.The rise in the price of crude oil <CLc1> above $122 a barrel helped push up shares in oil and gas majors such as BP <BP.L> and Royal Dutch Shell <RDSa.AS> by 0.8 and 0.2 percent, respectively.
French oil company Total was the largest individual negative weight, falling 1.6 percent after it posted a 9-percent rise in first-quarter net profit but would not commit to a production target.
Later in the day, investors will look out for U.S. data on first-quarter unit labour costs and productivity as well as pending home sales data for March. (Editing by Stephen Weeks)