By Sara Sjolin, MarketWatch

LONDON (MarketWatch) -- European stock markets were on track to break a five-day winning streak on Thursday, following disappointing trading updates from Zurich Insurance Group AG and Hennes & Mauritz AB.

The Stoxx Europe 600 index shed 1.2% to 305.04, wiping out much of the 1.9% runup made over the previous five sessions. On Wednesday, the index closed at its highest level since May 22 after data showed the euro zone emerged from a six-quarter-long recession. Read: Euro-zone GDP: Time to pop the champagne?

Drug makers added the most pressure on the benchmark on Thursday after a round of ratings changes. Shares of AstraZeneca PLC (AZN) lost 2.8% after Morgan Stanley cut the pharma firm to underweight from equal weight. GlaxoSmithKline PLC (GSK) got the same treatment, and its shares dropped 1.9%.

Among other notable decliners, shares of Zurich Insurance Group dropped 3.7% after the company reported a 27% decline in second-quarter income. The firm said the flooding in Eastern and Central Europe, and U.S. tornadoes, weighed on earnings.

Hennes & Mauritz gave up 2% after the Swedish fashion retailer posted a 1% fall in comparable sales in July.

The overall negative sentiment in Europe followed weak trading sessions in Asia and the U.S., with ongoing worries about the timing and pace of potential reductions in the U.S. Federal Reserve's bond purchases upsetting the markets.

Further adding to the tapering fears, data Thursday showed weekly jobless claims in the U.S. fell by 15,000 to 320,000, hitting the lowest level of initial claims since October 2007, two months before the Great Recession started. Fed Chairman Ben Bernanke has said any reduction in bond buying is dependent on improvements in macroeconomic data, with the labor market seen as one of the major focal points.

Also on the data front in the U.S., the New York Fed's "Empire State" general business conditions index fell to 8.2 in August from 9.5 in July, while industrial production was flat in July.

In the U.K., data showed retail sales rose 1.1% in on the month in July and jumped 3% on the year. Economists had forecast sales to rise 0.7% on the month and 2.5% on the year.

The data, however, failed to boost the U.K.'s FTSE 100 index , which dropped 1.6% to 6,480.21.

Germany's DAX 30 index fell 1.1% to 8,347.91, while France's CAC 40 index lost 0.9% to 4,078.72.

Among notable movers, shares of Ophir Energy PLC sank 12% after the oil- and gas-exploration firm reported a loss in the first half of the year.

Oriflame Cosmetics SA (ORFLY) lost 5.9% after the Swedish company reported a drop in second-quarter sales.

On a more upbeat note, shares of Imperial Tobacco Group PLC (ITYBY) picked up 2.8% after the firm said its performance in the first nine months of the year was in line with full-year expectations. Analysts at Credit Suisse said the release "strikes an upbeat tone on the strategic transition, and the appointment of a new marketing director (Peter Corjin from P&G) fills a key gap in senior management."

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

Zurich Insurance (QX) (USOTC:ZURVY)
Historical Stock Chart
From Jul 2024 to Aug 2024 Click Here for more Zurich Insurance (QX) Charts.
Zurich Insurance (QX) (USOTC:ZURVY)
Historical Stock Chart
From Aug 2023 to Aug 2024 Click Here for more Zurich Insurance (QX) Charts.