The article discusses Luxembourg's new Reserved Alternative Investment Fund (RAIF), which has become very popular since its launch in July. The RAIF allows funds to be launched more quickly than traditional funds since they do not require authorization from Luxembourg's financial regulator for each new fund. Managers with an AIFM license can launch RAIFs without regulatory approval, saving time and costs. The RAIF's speed of launch and flexibility has made it very attractive to asset managers and has established Luxembourg as a premier location for alternative investment funds.