A primary culprit for the sour turn was Amazon 's new push to cut two - day Prime shipping to just one day , which has forced the online retailer to spend billions of dollars to ramp up its transportation and warehouse infrastructure and buy more inventory to bring popular products closer to consumers . It then said in July it spent even more than that. After four straight quarters of record profit , Amazon is again in heavy growth mode , this time as it shells out to speed up its Prime shipping service across the world . The latest quarter included Prime Day sales , which Amazon already said hit a new record , with the two day event surpassing last year 's Black Friday and Cyber Monday sales .
A primary culprit for the sour turn was Amazon 's new push to cut two - day Prime shipping to just one day , which has forced the online retailer to spend billions of dollars to ramp up its transportation and warehouse infrastructure and buy more inventory to bring popular products closer to consumers . After four straight quarters of record profit , Amazon is again in heavy growth mode , this time as it shells out to speed up its Prime shipping service across the world . The latest quarter included Prime Day sales , which Amazon already said hit a new record , with the two day event surpassing last year 's Black Friday and Cyber Monday sales .