SINGAPORE – Stocks in Singapore were flattish on May 21 amid a mixed performance in regional markets.The benchmark Straits Times Index (STI) gained 0.02 per cent or 0.8 point to finish at 5,045.71. Venture Corp led the gainers on Singapore’s blue-chip index, rising 2.5 per cent or 43 cents to end at $17.65.The worst performer among STI constituents was Singtel, which fell 6.4 per cent or 32 cents to close at $4.70. The telco earlier on May 21 posted a net profit of $2.2 billion for the six months ended March 31, down 20.9 per cent from the year-ago period.The three local banks ended May 21 higher. DBS Bank gained 0.7 per cent or 45 cents to $61.75, OCBC Bank rose 0.4 per cent or nine cents to $23.33, and UOB was up 0.3 per cent or 10 cents at $37.69.Across the broader market, gainers outnumbered losers 315 to 285, after 1.8 billion securities worth $2.6 billion changed hands.Key regional indexes were mixed.Japan’s Nikkei 225 rose 3.1 per cent, and South Korea’s Kospi was up 8.4 per cent. Meanwhile, Hong Kong’s Hang Seng Index lost 1 per cent, and the FTSE Bursa Malaysia KLCI declined 0.5 per cent. THE BUSINESS TIMES