Jefferies makes the case for Amazon rising to $2,800 in 12 months and then $4,000 one day

A worker assembles a box for delivery at the Amazon fulfillment center in Baltimore, Maryland, U.S., April 30, 2019.
Clodagh Kilcoyne | Reuters

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Jefferies said the recent rise in Amazon's stock is just the beginning for the e-commcerce giant.