Counsels representing a group of large municipal bond issuers engaged Brattle to estimate damages due to a collusive agreement among brokers and dealers of municipal bond derivative contracts. Brattle’s expert analysis gave estimates for the price effects of the cartel on a diverse set of muni derivative contacts bought by the plaintiffs. Working from these estimates, damages attributable to a number of specific cartel participants were estimated as well.

Brattle was engaged by the U.S. Department of Justice to provide expert analyses and testimony concerning the economic foundation of a tax shelter that used foreign exchange contracts as a central part of a complex transaction. Brattle’s analysis showed that the claimed foreign exchange trades were outside the actual exchange trading activity of the tax payer’s claimed counterparty and that the trades were not exposed to the market place.