Karex, As Malaysia’s No.1 condom manufacturer, which has around 10 percent of the global condom market, saw its shares surge as high as 2.50 Malaysian ringgit, or around $0.79, on its Malaysian debut, up from its 1.85 ringgit offering price. The stock closed at 2.45 ringgit. Meanwhile,Twitter’s trading debut, set for Thursday, is facing some skepticism among analysts who are worried …