Stock market today: Indexes give up gains to end lower as stocks extend losing streak to 5 days

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• Indexes closed lower in the first trading day of the year on Thursday.
• The losses extend the market's losing streak to five days, putting the Santa Claus rally at risk.
• Apple stock dropped more than 2.5%. Tesla fell 6% after reporting deliveries.

Stock indexes reversed gains from earlier in the day to close lower on Thursday, as volatile trading in the first session of the new year pushed the market to its fifth consecutive loss.

The Dow Jones Industrial Average shed 150 points...