In thinking about how, or whether, to regulate innovative financial institutions (such as hedge funds) or instruments (such as credit derivatives), we should be wary of drawing artificial distinctions. Are the characteristics of hedge funds or credit derivatives that arouse concern peculiar to these institutions and instruments, or are they associated with others as well? If the characteristics in question are in fact a feature of the broader financial landscape, then a narrowly focused approach to regulation will be undermined by the incentives such an approach creates for regulatory arbitrage.
For example, while the complexity of new financial instruments and trading strategies is potentially a concern for policy, as I will discuss, not all credit derivatives are complex and--to state the obvious--not all complex financial instruments are linked to credit risk. Single-name credit default swaps and credit default swap indexes are relatively simple instruments, whereas derivatives based on other asset classes--such as exotic interest-rate and foreign-exchange options--can, by contrast, be quite complex. Moreover, derivatives in general are not necessarily more complex than some types of structured securities. In short, if complexity per se is the concern, we cannot address that concern by focusing on a single class of financial instruments. Similarly, hedge funds are hardly a homogeneous group of institutions, nor can their trading strategies be unambiguously distinguished from those of large global banks or of some traditional asset managers. A consistent regulatory strategy needs to be tailored to the essential characteristics of institutions or instruments that pose risks for policy objectives, not to arbitrary categories.