Shoppers spent an estimated $4.2 billion during this week's Amazon Prime Day sale, Bloomberg reports.

Why it matters: Amazon keeps breaking Prime Day records from previous years. While the tech giant has not released any revenue details from the 36-hour sale, Wedbush Securities analyst Michael Pachter calculated the figure based on the information from its press release.

By the numbers:

• The estimate indicates that small and mid-sized independent businesses that partner with Amazon sold more than $1 billion worth of goods in the first 24 hours.
• Overall, the sale resulted in more than 100 million shipped products.
• If accurate, the $4.2 billion sales estimate would significantly top the "rather [conservative]" preview prediction of $3.4 billion from Coresight Research.
• Prime Day spread the love. Sales at large retailers — with $1 billion or more in annual revenue — increased 54% compared to an average Tuesday, per an Adobe Analytics analysis via Retail Dive.

Go deeper:

• The high cost of Amazon's Prime Day problems.
• Trump hates Amazon, not Facebook.
• Prime Day woes might have cost Amazon $72m-$99m in sales.