Move data in columns to align them at the bottom

[jindon]

Another one, should be very fast...

Sub test()
    Dim a, i&, ii&, iii As Long, n&
    With Columns(1).SpecialCells(2).Areas(1).CurrentRegion
        a = .Value2
        For ii = 1 To UBound(a, 2)
            n = 0: iii = 0
            For i = UBound(a, 1) To 1 Step -1
                If a(i, ii) = "" Then
                    n = n + 1
                Else
                    Exit For
                End If
            Next
            If n Then
                For i = UBound(a, 1) - n To 1 Step -1
                    a(UBound(a, 1) - iii, ii) = a(i, ii)
                    iii = iii + 1
                    If i <= n Then a(i, ii) = ""
                Next
            End If
        Next
        .Value2 = a
    End With
End Sub