Amazon is expanding its grocery delivery service for Prime members, adding perishables with fast, free delivery. This move is expected to reach tens of millions of eligible customers. U.S. grocer stocks, including Walmart and Instacart’s parent company Maplebear, declined following the announcement. Walmart shares fell 2%, while Maplebear saw an 11% drop. This development is likely to impact the grocery delivery market significantly. Stay tuned for updates as more details emerge.

Companies involved in this news include Amazon (AMZN), Walmart (WMT), and Instacart’s parent company (CART). Amazon is expanding its same-day grocery delivery, while Walmart and Instacart’s parent company saw declines in their stock prices after the announcement. The competitive pressure in the grocery delivery sector is evident with these market reactions. Keep an eye on these companies as the situation continues to develop.

Read more at Quiver Quantitative: Amazon Expands Same-Day Grocery Delivery to Prime Members, Pressuring U.S. Grocers