Transition-metal diborides are a very hard and brittle type of materials, which, among others,find uses as protective coatings. The investigated diborides (Cr, Hf, Mn, Mo, Nb, Re, Ta,Ti, V, Zr) occur in three different known stackings.In this work, these different stacking sequences of transition-metal diborides are explainedand the impact of the stacking sequence on the stability of diborides is investigated viaabinitiomethods and phonon analysis.Predictions about a possible stability of certain stackings were made and their behaviourwas compared to each other.