This year’s Amazon Prime Day arrives when investors are already rejoicing in robust sales growth and steady gains over the past 18 months|Stock Catalog|CC BY 2.0

Amazon Prime Day, when shoppers can buy products on offer, starts tomorrow and lasts for two days.

Between Tuesday and Wednesday, the company anticipates shoppers will spend more than $13 billion.

This year’s Prime Day arrives when Amazon investors are already rejoicing in robust sales growth and steady gains over the past 18 months. The company’s stock price reached a record high, and its market cap surged past $2 trillion as advertising and cloud growth boosted margins.