Pedzisa mutsara unotevera:
January 1966 coup, akabatana neNigerian Industrial Development Bank. PaNIDB, kufarira kwake mubhizimusi rekudyara kwakamuita kuti atsigire kugadzwa kwebhangi rekutengesa rinotsigirwa neNIDB. Apo ICON securities, sangano rebhangi revatengesi rakagadzwa muna 1973 sechikamu cheNIDB, Balogun akatamira kuICON Ltd semutungamiriri wekushanda. Apo chido chaBalogun chokutungamirira ICON chakanga chisina kuitika, akasiya kambani kuti atange City Securities, kambani yekutengesa uye yekubudisa mari. City Securities yakagadzira ukama neMobil, Texaco uye Total makambani ekutengeserana emafuta, achibata makambani ekugovera zvikwereti. Muna 1979, akakumbira rezenisi rebhangi revatengesi kuti atange First City Merchant Bank. Balogun akafuridzirwa nemabasa ekuita zvebhizimusi aSiegmund Warburg, uyo akabatanidza S.G. Warburg, akashanyira Warburg muLondon asati atanga bhangi rake rekutengesa. Anowanzotaura nhau dzisina kururama dzokuti mwanakomana wake akamukurudzira sei kuita danho rokutanga bhangi. Apo mashandiro ebhangi akatanga kushanda muna 1983, Balogun akagadzira tsika yezvemabhizimisi mubhangi idzva, rakasiyana nemabhangi ehurumende panguva iyoyo.