Nintendo shipped 2.74m Switch units, 5.46m sowtware, targeting 10m Switch units for FY 2017.

[JRPGfan]

Louie said:
Almost 3m Switch units is more than most people expected. Very good launch!

Its less than the Xbox One (~3m) and PS4 (~4.5m shipped, ~4.2m sold in) (nrs I saw on neogaf), did first month of sales.

However considering it launched in March, thats pretty damn good.