Magna Falls Most Since 2011 as Currency Rates Crimp Revenue

  • Weaker euro, Canadian dollar erode what would have been a gain
  • Auto-parts supplier's board approves buyback of 9.9% of shares
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Magna International Inc. slid the most in more than four years after the largest North American auto-parts supplier said currency exchange rates trimmed about $870 million from third-quarter revenue, which fell short of analysts’ estimates.

The shares fell 10 percent to $47.35 at the close in New York for the steepest one-day drop since August 2011. The stock has declined 13 percent this year.