According to the NPD Group, a retail research group based in the United States, the Nintendo Switch has now outsold the PlayStation 4 in terms of lifetime sales in the U.S. This pushes Nintendo's hybrid console into fourth place as the highest-selling console in the United States.
https://www.notebookcheck.net/Nintendo-Switch-outsells-PlayStation-4-to-become-fourth-best-selling-console-in-United-States.619536.0.html