University Ranking agencies have started to displace the attention from global academic rankings to more specific rankings in a particular scientific field, thus creating “Rankings by Subject”. QS, among other widely accepted ranking methodologies, accepted the new direction and thus created a new set of rankings: the QS World University Rankings by Subject. This paper provides stability analysis of the ranking in the field of Business and Management, which is one of the 36 subject specific rankings QS publishes. The courses offered by schools and universities in the field of business and business related subjects, although very appealing to future students, have been regarded with scepticism by scholars and experts. Therefore, a statistically sound and stable ranking of institutions is needed. This paper conducted the uncertainty and sensitivity analysis on the QS ranking in the field of Business and Management to analyse the effects of its weighting scheme. The results show that QS ranking is relatively stable, whereas the universities in the bottom of the ranking proved to be more sensitive to different model assumptions.