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Barchart's Unusual Stock Options Activity Report shows that a large volume of out-of-the-money (OTM) Delta Air Lines (DAL) call options have traded. That is a bullish signal from investors ahead of its earnings release tomorrow morning.
DAL is at $50.29 in midday trading on July 9, well off its peak of $69.06 on Feb. 5. However, it's still up from the April 8 low of $35.88. It could have much further to go using its historical valuation parameters.