2 ; ▁two ▁years ▁later , ▁Louis ▁Ru key ser ' s ▁Mut ual ▁Fund s ▁was ▁started . ▁ ▁Ru key ser ' s ▁month ly ▁news let ters ▁continued ▁to ▁be ▁published ▁by ▁K CI ▁Communic ations ▁( now ▁Capit ol ▁Information ▁Group ) ▁under ▁the ▁editor ship ▁of ▁Benjamin ▁She ph erd ▁until ▁October ▁ 2 0 1 2 ▁when ▁Ru key ser ▁Mut ual ▁Fund s ▁was ▁dis cont in ued ▁and ▁Louis ▁Ru key ser ' s ▁Wall ▁Street ▁was ▁changed ▁to ▁Ben ▁She ph erd ' s ▁Wall ▁Street . ▁ ▁Cont ro vers y — The ▁Ru key ser ▁Effect ▁Over ▁the ▁years , ▁stock ▁trad ers ▁and ▁anal yst s ▁noted ▁that ▁a ▁company ▁tout ed ▁on ▁W $ W ▁on ▁Friday ▁would ▁experience ▁a ▁sp ike ▁( rap id ▁short ▁term ▁advance ) ▁in ▁its ▁stock ▁price ▁the ▁following ▁Monday . ▁This ▁phenomen on , ▁dub bed ▁" The ▁Ru key ser ▁Effect ," ▁was ▁described ▁as ▁a ▁further ▁demonstr ation ▁of ▁the ▁program ' s ▁influence . ▁However , ▁in ▁ 1 9 8 7 , ▁Professor ▁Robert ▁P ari ▁of ▁Bent ley ▁College ▁published ▁an ▁academic ▁article ▁in ▁the ▁Journal ▁of ▁Port folio ▁Management ▁detail ing ▁the ▁results ▁of ▁a ▁study ▁that ▁found ▁that ▁stock s ▁recommended ▁by ▁Ru key ser ' s ▁guests ▁on ▁Wall ▁$ tre et ▁Week ▁not ▁only ▁t ended ▁to ▁rise ▁in ▁price ▁and ▁trad ing ▁volume ▁in ▁the ▁days ▁preceding ▁the ▁Friday ▁evening ▁broadcast , ▁pe