Hi Stata Users, 
I am interested in performing sqreg on a huge data on house price transactions and marketing duration.  
My problem is that the model does not seem to converge. And I keep on 
getting the note "convergence not achieved" and then the results are 
printed......Can someone please tell me how reliable are these results 
and what can I do to overcome this problem. 
I am also interested in estimating selling price and liquidity (marketing duration) using simultaneous or two-stage models. 
My next question than is whether quantile reg can be used in 2sls.
Any help or guidance will be highly appreciated.
Thanks
V.
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