Tooltips in DateListPlot

In[]:=
dbo=
dbo
;
In[]:=
DateListPlot[dbo,ImageSize->Large,PlotHighlighting->Automatic]
Out[]=
In[]:=
dbo2=
dbo2
;
In[]:=
DateListPlot[dbo2,ImageSize->Large,PlotHighlighting->Automatic]
Out[]=
Tooltip solves the problem but slows down DateListPlot. Tooltips are not as nice.
In[]:=
DateListPlot[Tooltip[dbo],ImageSize->Large]
Out[]=