Shares of health service company Cigna Corp. (CI) are gaining almost 13 percent or $23.73 in Wednesday's morning trade at $207.61 despite no company-specific news.
U.S. stocks are rising on Wednesday with investors awaiting the outcome of the presidential elections that has so far failed to show signs of a clear winner. Votes are still being counted in a number of key swing states.
Cigna has traded in a range of $118.50 to $224.64 in the past 52 weeks.
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