IHD Holdings chief executive Ch'ng Poh and his wife Kong Yuk-chu have increased their stake in the company to 37.09 per cent by buying shares and exercising their warrants to convert into shares. The move comes as no surprise following Ch'ng's resignation as chairman of the company this year to prevent his personal court case from damaging the restructuring plans of the company. When he resigned, he said that he hoped to regain his position in the company when his personal problems were over. He is due to stand trial in April on charges connected with the alleged theft of $127 million from the company. His wife took over the reins following his resignation. After the group's annual general meeting yesterday, which was closed to the press, Ch'ng said he had exercised ''almost all'' his warrants which were converted into 10 million shares and were worth $26 million. Warrants on the shares expire today. Shares in the market were bought at between $3.10 and $3.30 each. Ch'ng and his wife previously held a 35.43 per cent stake in the company. Ch'ng also said IHD was expected to be allotted 283 hectares of land in Kuala Lumpur to develop into 9,000 residential units comprising bungalows and semi-detached houses, and shops. The development would be through a joint venture with a partner in Kuala Lumpur, which he declined to name. An initial investment of $100 million will be put up by IHD for land improvement on the 10-year project.