At 12.30pm, the key index was up 0.5 points to 1,608.23, led by Top Glove.
The world's largest glove maker rose 11 sen to RM5.73 on news that its planned listing on the Hong Kong Stock Exchange would be downsized to reduce the earnings dilution for shareholders.
Hartalega was up four sen to RM10.58 while Supermax rose 13 sen to RM5.90.
Index gains however were offset by IHH down nine sen to RM5.41, Digi falling five sen to RM4.18 and MISC sliding two sen to RM6.79.
Among actives, Focus was up one sento 12.5 sen, Mah Sing rose eight sen to RM1.02 and UCrest gained 5.5 sen to 47 sen.
In Asian markets, Japan's Nikkei was down 0.6% while South Korea's Kospi was flat.
China's main index was flat while Hong Kong's Hang Seng rose 0.9%. Australia's ASX200 was down 0.1%.