[THE INVESTOR] South Korean shares opened higher on June 24 as the first poll after the Brexit vote on June 23 showed signs of Britain remaining in the European Union. The benchmark Korea Composite Stock Price Index soared 8.68 points, or 0.44 percent, to 1,995.39 during the first 15 minutes of trading.South Korean shares opened higher on June 24 as initial poll results showed Britain may stay with the EU. Lee Sang-sub/The InvesterAll eyes are on the outcome of the Brexit poll due out at around