NEW YORK (AP) â¿¿ Shares of some top gold companies were mixed at the close of trading: Barrick Gold Corp. unchanged at $18.53. Gold Fields Ltd ADS fell $.02 or .4 percent, to $4.59. GoldCorp. rose $.08 or .3 percent, to $25.76. Newmont Mining Corp. fell $.19 or .7 percent, to $27.98.