More than just a trade association, the International Swaps and Derivatives Association's (Isda) reach is almost unparalleled in financial markets, and makes our list this year for its instrumental work on a number of topics highly pertinent to both IFLR and Practice Insight readers. As its full name would suggest, Isda has great sway on the over-the-counter derivatives (OTC) market, but it also works closely with trade organisations in other sectors to ensure that markets harmonise and operate as smoothly as possible.