Former AIB chief executive Tom Mulcahy has taken a stake in Irish-owned financial spread betting firm Delta Index.
He has taken part in a €1m round of fund-raising which also involved Delta Index managing director Dermot O'Donoghue. Delta has now raised €2.3m since it was founded in 2002.
Earlier investors included Dolmen Securities, parent company of Dolmen Stockbrokers. Mr O'Donoghue said the new money would be used to boost sales and marketing and to upgrade the company's technology and products.
Financial spread betting allows investors to bet on the movements of shares, indices, commodities or currencies.
