This article explores how holding company or “holdco” structures can help investors to take “long-term stakes in operating companies that deliver benefits such as affordable housing, financial inclusion and sustainable fisheries.” The piece details how traditional closed-end structures that typically span 10 years, "do not always give portfolio companies the time they need to generate optimum financial value or sustained social or environmental results." As such, the market is seeing impact investors expressing interest in--and developing holdco structures to create lasting impact.