Trust Mutual Fund, Carnelian Asset Management and Abakkus Investment Managers collectively acquired a little over 3 percent stake in SFC Environmental Technologies, a wastewater treatment solutions provider, through open-market transactions on November 3, its first trading day on the stock exchanges following its IPO. SFC Environmental Technologies shares made a strong debut, surging 29.12 percent to Rs 426.10 against the IPO issue price of Rs 330 per share.