In 1990, following Arsan's departure, ABC acquired the remaining 25% of IBA shares, making IBA a wholly owned subsidiary of ABC, until October 1993 when China Everbright Group became a 20% stake holder.
In February 2004 Fubon Financial Holding Co., Ltd., a member of Taiwanese financial institution Fubon Group, in an acquisition of IBA shares from both ABC and China Everbright Limited ( a subsidiary of Everbright Group incorporated in 1997), acquired a 75% stake in IBA.