Hi all,

My data set looks like below,

input int YEAR str47 Acquirer long DealNumber double MA_DVALUE
1999 "3COM CORPORATION" 71010 17565.39
1999 "3COM CORPORATION" 71622 3997.23
2000 "3COM CORPORATION" 202332 80000
2000 "3COM CORPORATION" 208953 90000
2000 "3COM CORPORATION" 187288 33000
2000 "3COM CORPORATION" 185078 110000
2009 "3D SYSTEMS CORPORATION" 1601108778 0
2009 "3D SYSTEMS CORPORATION" 1601137765 0
2009 "3D SYSTEMS CORPORATION" 1601119337 0
2010 "3D SYSTEMS CORPORATION" 1601228640 11955

I have more than one observation in a year, I assume I cannot use fixed effect as the panels have more than one observations (the same company has more than two entries per year). I have to use Poisson and logit models in the analysis. Can I use the fixed-effect model or how can I treat for time and firm effect in the regression?