In the municipal bond market, one of the most insightful ways to examine a state is to look at how actively its bonds trade. Broker-dealers make money by trading, so naturally they go where the action is and commit market-making resources to those states. It’s generally true that the most populous states are the ones with the most traded bonds, but if we map the wealth of a state’s citizens to how often that state’s bonds trade, we get some interesting results. For example, New Jersey, which has only 2.8 percent of the national population but a high proportion of its wealthy citizens, might have the highest number of municipal bond owners as a percentage of state population.
The municipal bond market does not trade on an exchange but rather on “alternative trading systems” (ATS). These are systems where dealers post inventories of bonds to be aggregated. The largest of the retail ATS is Bonddesk, which does some excellent data analysis for both the municipal and corporate bond markets.
From Bonddesk’s December Transparency Report I pulled the data for these charts showing the seven most actively traded states’ bonds. Bonddesk uses “investor buys” data, which represents trades that end up in a retail investor’s account. In the bond markets there are often many trades between broker-dealers before the securities land in an investor’s account, so Bonddesk scrubs the data to show the real level of investor demand.
California is the largest state by wealth, population and municipal bond issuance. Although it represents about 12 percent of the U.S. population, it dominates with 30 percent of muniland trades. Even with its substantial demand, the state still has somewhat higher yields, as seen below. All seven states are rated AA, but Illinois and California trade with higher yields given their weaker fiscal position.