Stocks making the biggest moves premarket: Delta Air Lines, Twitter, Snap and more - CNBC

Stocks making the biggest moves premarket: Delta Air Lines, Twitter, Snap and more  CNBCDelta Air Lines set to report earnings on Wednesday morning  Yahoo FinanceSummer Travel Rebound Delivers Profit for Delta Despite Rising Costs  The Wall Street JournalDelta posts profit despite jump in costs, vows to improve reliability after airline 'pushed too hard'  CNBCDelta CEO on summer disruptions: We had a rough six weeks  CNBC TelevisionView Full Cove