South African Stock Preview: Adcorp, Nampak, Pinnacle Point

May 25 (Bloomberg) -- The following stocks may rise or fall in South Africa. Symbols are in parentheses and prices are from the last close. The FTSE/JSE Africa All Share Index climbed 386.52, or 1.2 percent, to 31,731.05 at the 5 p.m. close in...