In trading on Wednesday, airlines shares were relative laggards, down on the day by about 2%. Helping drag down the group were shares of United Continental Holdings ( UAL ), off about 11.4% and shares of Alaska Air Group ( ALK ) off about 6.9% on the day.

Also lagging the market Wednesday are semiconductors shares, down on the day by about 1.8% as a group, led down by Emagin Corporation ( EMAN ), trading lower by about 15.6% and Sigma Designs ( SIGM ), trading lower by about 15%.

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