rice enron finance seminar series copy paul schultz paper makes market available paper obtained monday sure felicia jones economics latha ramchand university houston vince kaminski enron barbara ostdiek everyone else paul seminar friday march 30 3 30 room 201 note room change abstract paper copied abstract provide evidence nasdaq dealers make markets stocks receive order flow several variables used proxy stocks individual market maker brokerage customers would trade including trading volume location underwriting participation analyst coverage significant determinants market marking activity informational advantages may also factor market making decision evidenced dealers specializing stocks specific industries potential problems arise researchers ignore integration market making brokerage securities analysis underwriting businesses discussed