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We examine the performance of mutual, demutualized, and publicly listed exchanges and find evidence of improved performance along the exchange governance continuum, with publicly traded exchanges exhibiting better operating performance than demutualized exchanges. However, our robustness test, focusing on the corporatized exchanges that have gone through the three phases of the governance structure, shows that the listed exchanges do not exhibit evidence of incremental gains in efficiency and profitability beyond what they achieved at the demutualization phase. We conclude that commercialization provides sufficient freedom for exchanges to exploit monopoly rents before going public, while corporatization brings about proper valuation of the exchanges' franchise.

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PurposeThe objective of this paper is to leverage a two-sided view of social capital to develop a model of board gender diversity and firm performance using social capital data from Northeast Regional Center of Rural Development.Design/methodology/approachThe authors examine a large sample of 2,322 US publicly listed firms over the period 1996 to 2009. The final sample consists of 14,634 firm-year observations.FindingsThe authors find that when a firm's social network is not supportive of gender diversity, corporate boards have lower levels of female representation. The strength of a social network's social ties exacerbates the relationship between social capital and board gender diversity. The authors also report a negative relationship between female board membership and firm performance in social networks that are not pro-diversity. Robustness tests reveal that the authors’ social capital view of board diversity also applies to board ethnic diversity.Research limitations/implicationsThis study focuses primarily on blue chip firms due to data constraints. It will be interesting for future researchers to investigate a broader spectrum of firms from a broader perspective of diversity beyond the study’s gender and ethnicity findings. Furthermore, this study assesses the US context, and future research could investigate firm sociability in other national contexts.Practical implicationsThis study contributes new insights to the discourse on gender diversity on corporate boards which stand to inform both policy and practice. The results of the study can inform the position of an industry association on board gender diversity, with guidance on how messaging across networks can be more effective should it account for the hidden bias that the authors uncover in the current study. From a manager's perspective, this study can help those managers and boards trying to enhance board gender diversity by providing a more complete understanding of the factors that can limit progress.Originality/valueThis study contributes a social capital view of board gender diversity to the growing literature of corporate governance, board diversity and local environmental influences on corporate policies.