Several high net worth investors, who were looking to make a quick buck in Fortis Healthcare ahead of the open offer, have been caught on the wrong foot after the Supreme Court in December put on hold its sale to Malaysia's IHH. Unnerved by the uncertainty about the deal's prospects, many of these investors are squaring off their positions, resulting in Fortis shares falling 11 per cent to Rs 138 in less than a month. These investors had bought shares at lower levels to take advantage of the arbitrage opportunity available in early December when the price was at around Rs 145. The buyback price was at Rs 175. The apex court put the deal on hold while hearing the plea of Japanese firm Daiichi Sankyo against Malvinder and Shivinder Singh.