Share Market News: The Sensex and Nifty opened marginally lower on May 28. After opening the headline indices slipped further into the red as the 30-share Sensex started 94.02 points or 0.11 per cent lower at 81457.61. At the time of writing the Sensex index shed 200 odd points lower to trade around 81351.31. Likewise, the Nifty 50 started with some marginal gains as it opened 6.3 points higher at 24,832.5. However the benchmark index soon slumped into the red zone declining 0.24 per cent.