<prompt> Translate the following text to SwahiliThe cover story says that megabillionaire and stock-picking legend Warren Buffett has quietly shifted his focus from buying individual stocks to purchasing companies.  <response>: Mwanahabari wa The New York Times alisema kuwa mwenye utajiri mkubwa na hadithi ya kuchagua hisa, Warren Buffett, amegeuza kwa utulivu lengo lake kutoka kununua hisa za mtu binafsi kwenda kununua kampuni. 