Amaranth Advisors LLC was an American multi-strategy hedge fund founded by Nicholas Maounis and headquartered in Greenwich, Connecticut. During its' peak, the firm had up to $9 billion in assets under management before collapsing in September 2006, after losing in excess of $5 billion on natural gasfutures.[1] The firm's failure was one of the largest known trading losses and hedge fund collapses in history.