Corporate discourse offers a prime site for the study of interdiscursive performance across linguistic and cultural boundaries. However, there is a dearth of quantitative studies to assess cultural interdiscursivity in corporate discourse. Taking advantage of an LDA model and a dispersion formula, this study provides a corpus-based measurement of the interdiscursivity of corporate cultures as expressed within MD&A texts. The results demonstrate three distinct corporate culture types, namely technology-, resource-, and team-oriented cultures, which are expressed through subject terms, leading to strong culture enclave and culture blending effects. This article reveals the quantitative side of discourse and provides new insight into understanding how interdiscursive performance across linguistic and cultural boundaries is expressed in communicative practices.