Core Insights - Amazon's Prime Day sales performance has started poorly this year, with sales in the first four hours down nearly 14% compared to the same period last year [1] - The data from Momentum Commerce, which manages approximately $7 billion in sales for brands like Crocs and Beats, is seen as a barometer for consumer sentiment and the overall economic outlook in the U.S. [1] Group 1 - The negative sentiment from investors regarding this year's Prime Day is reflected in the high-frequency data from Momentum, indicating a cautious shopping behavior among consumers [1] - On the day the data was released, Amazon's stock fell over 1.8%, marking the worst performance among the Magnificent 7 tech giants [1] Group 2 - Amazon's Prime Day this year runs from July 8 to July 11, extending the event to four days for the first time, which may complicate year-over-year sales comparisons [2] - The longer duration may lead consumers to wait for larger discounts rather than making immediate purchases as in previous years [2] - High tariffs imposed by the Trump administration are also seen as a factor contributing to the weak sales, affecting sellers' promotional capabilities [2] Group 3 - Key observations from this year's Prime Day include fewer discounts on Amazon's own devices like Echo, with essential goods driving promotions rather than tech products [2] - Grocery items are seeing larger discounts compared to electronics, and Apple is offering notable deals, such as AirPods 4 priced at $89, cheaper than last year's Black Friday promotions [2]