caa a22 4500 378899058 CHVBK 20180305123513.0 cr unu---uuuuu 161128e20040317xx s 000 0 eng 10.2202/1538-0637.1212 doi (NATIONALLICENCE)gruyter-10.2202/1538-0637.1212 Merger Simulation with Brand-Level Margin Data: Extending PCAIDS with Nests [Elektronische Daten] [Roy J. Epstein, Daniel L. Rubinfeld] We present a method to calibrate empirically the demand parameters in a merger simulation model by using brand-level profit margin data. While the approach can be generalized, we develop these ideas within a particular framework - the PCAIDS (proportionality-calibrated AIDS) model. We show that the brand-level margins effectively define product "nests" (products that are especially close substitutes) and substantially increase the flexibility of PCAIDS for modeling critical own- and cross-price elasticities. The model is particularly valuable for transactions at the wholesale level (where scanner data do not exist) and for geographic markets that span national borders (where comparable data may not be available), since other methods to derive elasticities, particularly those based on econometric estimation, may not be possible or may not be reliable. ©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston merger simulation nationallicence unilateral effects nationallicence Epstein Roy J. Boston College, rje@royepstein.com aut Rubinfeld Daniel L. University of California, Berkeley, rubinfeld@law.berkeley.edu aut Advances in Economic Analysis & Policy De Gruyter 4/1(2004-03-17) 4:1 2004 4 bejeap https://doi.org/10.2202/1538-0637.1212 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2202/1538-0637.1212 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Epstein Roy J. Boston College, rje@royepstein.com aut NATIONALLICENCE 700 1- Rubinfeld Daniel L. University of California, Berkeley, rubinfeld@law.berkeley.edu aut NATIONALLICENCE 773 0- Advances in Economic Analysis & Policy De Gruyter 4/1(2004-03-17) 4:1 2004 4 bejeap CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter