This paper is concerned with specifying and estimating the productive characteristics of multidivisional multiproduct companies at the divisional level. In order to accomplish this, we augment division-level information with inputs that are imputed based on profit-maximizing allocations within each division. This study builds on work by De Loecker et al. (2016) as well as Olley and Pakes (1996), Levinsohn and Petrin (2003) and Ackerberg et al. (2015), and extends this work by lifting a key assumption that single- and multi-product/division firms have the same production technique for the same product/segment. We estimate the production function and impute input allocations simultaneously in the absence of this key assumption as well as the constant share constraint of the input portfolio. Finally, our approach is applied to estimate the division-specific productivity of firms that compete in five segments of the global oilfield market to better understand the motivation of firms’ investment, divestment, mergers and acquisitions (M&A).

本文涉及在部门级别指定和估计部门多产品公司的生产特征。为了做到这一点，我们用基于每个部门内的利润最大化分配推算的输入来扩充部门级信息。这项研究基于De Loecker等人的工作。（2016）以及Olley和Pakes（1996），Levinsohn和Petrin（2003）以及Ackerberg等人。（2015年），并通过取消一个关键假设（即单个产品和多个产品/部门的公司对于相同的产品/部门具有相同的生产技术）来扩展这项工作。在没有这个关键假设以及投入组合的恒定份额约束的情况下，我们同时估计生产函数和估算投入分配。最后，