By Blaise Robinson
PARIS, May 9 (Reuters) - European stocks dropped in early trade on Friday, falling more than 1 percent, led by financials after U.S. insurer AIG <AIG.N> posted a $7.8 billion quarterly loss, hit by bad credit-related investments.
Adding to the gloom for the financial sector, Citigroup <C.N> could announce as much as $400 billion of "non-core" assets are up for sale when it meets with investors and analysts later in the day, a person familiar with the situation said.
At 0828 GMT, the FTSEurofirst 300 <
> index of top European shares was down 1.2 percent at 1,344.21 points.Societe Generale <SOGN.PA> fell 2.7 percent, BNP Paribas <BNPP.PA> dropped 2.3 percent, and Barclays <BARC.L> lost 2.4 percent.
"$400 billion is huge. That is a sign that the banking sector is heading into some sort of split-up of the banks' businesses. This Citigroup move might just be the beginning," said Marie-Pierre Peillon, head of equity and credit research at Groupama Asset Management in Paris.
"Over the past weeks, investors got the feeling that the credit crisis was easing, but a piece of news like that is sort of a wake-up call that reminds us that the storm is far from over," she said.
"We think that the peak in writedowns is behind us, but now the focus is on the banks' solvency and business model."
Insurers were on the downside after AIG, the world's largest insurer, posted a loss and said it would raise $12.5 billion to strengthen its balance sheet.
AXA <AXAF.PA> was down 2.5 percent, Aegon <AEGN.AS> down 1.7 percent and Standard Life <SL.L> down 2.2 percent.
"European insurers are much less exposed to toxic investments than their U.S. peers. We will have to wait until the second part of 2008 to have a real sense of the damage in the sector in Europe, but we don't expect the sort of big surprises AIG unveiled last night," Peillon said.
Allianz <ALVG.DE> was down 1.3 percent. Allianz's Dresdner Bank posted a quarterly loss after writing down 845 million euros on structured finance investments.
Sanofi-Aventis <SASY.PA> dropped 4 percent after Schweizerhall, a generic drug company based in Basel, said it was close to winning approval for a generic version of Sanofi-Aventis's <SASY.PA> blockbuster blood-thinning drug Plavix in Germany.
A spokesman for Sanofi said Plavix was protected in Europe by its patent until 2013.
Around Europe, Germany's DAX index <
> was down 1.2 percent, UK's FTSE 100 index < > down 1.2 percent and France's CAC 40 < > down 2.1 percent.European car makers were also on the downside after Toyota Motor Corp <7203.T>, the world's biggest automaker, forecast its first decline in annual net profit in seven years.
Peugeot <PEUP.PA> was down 2 percent and Daimler <DAIGn.DE> down 1.6 percent.