By Sara Sjolin, MarketWatch

LONDON (MarketWatch) -- European stock markets struggled for direction as earnings reports from heavyweights such as Unilever PLC and Novartis AG gave reason for some optimism Wednesday, while investors also looked ahead to a budget vote in the U.S.

The Stoxx Europe 600 index was marginally lower at 287.60, swinging between small gains and losses.

Shares of Alcatel-Lucent posted one of the biggest gains in the index, up 4.4%, after Citigroup lifted its rating on the telecom-equipment supplier to neutral from sell.

Also among the risers, shares of Unilever PLC (UL) picked up 2.5%, after the consumer-products major reported a 5.4% rise in full-year profit as sales accelerated.

In the same vein, shares of Novartis AG put on 2.8%. The Swiss drug maker said profit rose but sales stagnated in the fourth quarter, adding that it expects to return to growth next year.

U.S. budget focus

For the broader stock markets, investors trained their attention on the next moves in what have been highly contentious U.S. deficit talks.

The House of Representatives was due to vote on raising the U.S. debt limit through the middle of May, while President Barack Obama was expected to sign the bill if it passes Congress.

U.S. stocks ended higher on Tuesday, supported by encouraging earnings. Tech majors Google Inc. (GOOG) and IBM Corp. (IBM) both issued upbeat results after the close on Wall Street.

U.S. stock futures pointed to a lower open on Wall Street.

Closer to home, European Central Bank President Mario Draghi said late Tuesday that the darkest clouds over the euro zone have subsided.

"We can begin 2013 on a more confident note, precisely because significant progress was made during 2012," he said in a speech at the Frankfurt Chamber of Commerce and Industry.

Movers

The German DAX 30 index rose 0.2% to 7,711.10, as shares of SAP AG (SAP) took on 2%. The software firm said it expects rapid growth to continue in the year ahead and said momentum "has never been stronger".

On a more downbeat note, heavyweight industrial firm Siemens AG (SI) dropped 0.9%. The company said net profit in the three months to Dec. 31 dropped 12% as orders slipped.

And in France, shares of BNP Paribas SA lost 1.3%, after Deutsche Bank cut its rating on the bank to hold from buy, saying the stock had reached its target price.

Other Paris-listed banks also traded lower, with shares of Credit Agricole SA off 2.1% and Société Générale SA down 1.6%.

The CAC 40 index moved down 0.2% to stand at 3,733.67.

Among U.K. stocks, shares of TUI Travel PLC gave up 4.4%, as TUI AG said it won't bid for the British travel agent, ditching a plan to merge the two companies. Shares of TUI AG slumped 5.6%.

Shares of Barclays PLC (BCS) put on 0.6%, as a representative told The Wall Street Journal that the bank has started looking into potential job cuts at its U.K. investment-banking business, as part of a formal review.

London's FTSE 100 index rose 0.1% to 6,186.75.

Outside the major European indexes, shares of Nokia Corp. (NOK) gained 1.5% to EUR3.47, after J.P. Morgan Cazenove lifted the Finnish handset maker's price target to 2 euros ($2.66) from EUR1.20 previously.

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