French lender Société Générale SA and Danish brewer Carlsberg A/S both cited tensions in Russia and Ukraine for forecast-missing earnings Wednesday, in a reminder of how ripples from the Ukraine crisis can head west.

The Paris-based lender, France's third-largest listed bank by assets, said a EUR525 million ($731.2 million) write-down on its Russian business pushed first-quarter net profit down 13% to EUR315 million from a year earlier.

The brewer, meanwhile, trimmed full-year profit guidance and said it now expects adjusted net profit, as well as operating profit in Danish kroner, to grow by low single-digit percentages, compared with its earlier estimate of mid-single-digit percentages, citing a weak ruble.

In a bid to offset slowing growth in the West, Carlsberg made a big bet on Eastern Europe in 2008 when it bought the 50% it didn't already own in Baltika Breweries, the market leader in Russia.

Tensions in Ukraine flared up anew overnight, leading the Stoxx Europe 600 to an early 0.4% loss. The U.K's FTSE 100 was trading 0.3% lower, with France's CAC-40 and Germany's DAX both down 0.5%.

Fiat SpA slipped to the bottom of the Stoxx Europe 600 after Fiat Chrysler overnight announced an ambitious five-year plan to boost the company's global vehicle sales nearly 60% to 7 million by 2018, even as it disclosed a net loss for the latest quarter.

Anheuser-Busch InBev reported strong revenue growth during the first quarter, though higher financing costs and exchange-rate swings pushed down the brewer's profit, and Siemens reported a rise in fiscal second-quarter profit but said new orders fell.

The German engineering group also delivered the latest sign of a resurgence in merger-and-acquisition activity, announcing that it will buy most of Rolls-Royce Holdings PLC's civil energy operations.

In the currency markets, the dollar remained largely unloved.

Sterling remained close to $1.70 Wednesday, while the euro continued to hover around $1.39 following strong purchasing managers indexes from the euro zone Tuesday. The euro last hit that level at the end of February. Strategists struggled to explain the weakness in the dollar, however.

"Everybody seems to be searching for the missing link," said Jens Nordvig, currency strategist at Nomura. "The moves cannot be explained by rates. The moves cannot be explained by a reversal of safe-haven flows."

Strategists at Bank of Tokyo Mitsubishi UFJ said that "the ongoing decline in U.S. yields despite building evidence that a strong economic rebound is under way in the U.S. is serving to undermine confidence in the U.S. dollar."

Later in the day, the market will be scrutinizing quarterly preliminary nonfarm productivity data out of the U.S., as well as consumer credit figures for March. HSBC economists said that they expect productivity to have fallen 1.1% at an annual rate in the first quarter, and that unit labor costs rose 2.8% at an annual rate. They said in a note that they expect to see a $12 billion increase in consumer credit for March.

Monthly interest-rate decisions for both the European Central Bank and the Bank of England are scheduled for Thursday. Several economists have said that the BOE meeting will be watched particularly closely in the light of unemployment breaching the 7% threshold by falling to 6.9% in February, potentially putting the discussion of rate rises on the agenda.

The ECB, meanwhile, is broadly expected to keep rates unchanged.

In commodities markets, gold rose 0.15% to $1,310.60 an ounce while Brent crude oil added 0.24% to trade at $107.32 a barrel.

Write to Josie Cox at josie.cox@wsj.com

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