Stock futures trade lower after heavy losses

U.S. stock futures traded lower this morning. Here are some big stocks with losses in today s pre-market trading session.

Yamana Gold Inc. declined 10.3% in pre-market trading to $5.41. Following the sale of its Canadian assets by Yamana and Pan American shareholders, the proposed transaction of all issued and outstanding common shares of the company was approved by Yamana and Pan American shareholders.

After quarterly results, Vodafone Group Public Limited Company fell 2.8% to $11.26.

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