Dieckman v. Regency GP LP et al. This article discusses Dieckman v. Regency GP, LP, a recent Delaware Chancery Court decision. It is a reminder for valuation professionals providing damages testimony to be wary when mixing the use of the market approach and income approach when estimating damages in situations where multiple entities are involved. For example, using the income approach in valuing the allegedly harmed subject company and then using a market approach for a similarly situated company that allegedly harmed the subject company (and vice versa). On February 15, 2021, Chancellor Andre Bouchard of the Delaware Court of…