Domestic investor Co-Fund NI wants others to join it in backing early stage companies in the province. : Domestic investor Co-Fund NI wants others to join it in backing early stage companies in the province Northern Ireland plays home to a host of highly investible companies which international investors are missing out on. That’s the message from the managers of Co-Fund NI which wants to encourage more external investors to take a closer look at the early-stage businesses emerging from the province so they can co-invest.