Merger Simulation and Calibration R package mergersim version 0.2.0 Analyze mergers between firms. Models of competition include differentiated Bertrand price-setting, Nash bargaining, and second score auctions, as implemented in Panhans and Taragin (2023) <doi:10.1016/j.ijindorg.2023.102986>. Calibrates demand systems including standard logit, nested logit, and generalized nested logit as implemented in Panhans and Wiemer (2026) <doi:10.1093/joclec/nhaf037>. Software Imports: BB, numDeriv, rootSolve, stats Suggests: antitrust, knitr, rmarkdown Matthew T Panhans <mpanhans@gmail.com> Comprehensive R Archive Network (CRAN) Matthew T Panhans [aut, cre] (ORCID: <https://orcid.org/0000-0001-7874-6740>) CC0 2026-07-21 application/tgz https://CRAN.R-project.org/package=mergersim doi:10.32614/CRAN.package.mergersim