Categorize the companies based on their ownership status.
Meta, Microsoft, Amazon, Deloitte, KPMG, Ernst & Young
Private held : Deloitte, KPMG, Ernst & Young 
Public : Meta, Microsoft, Amazon
<START_INST>Categorize the companies based on their ownership status.
Meta, Microsoft, Amazon, Deloitte, KPMG, Ernst & Young<END_INST><START_CTX><END_CTX><START_A>Private held : Deloitte, KPMG, Ernst & Young 
Public : Meta, Microsoft, Amazon<END_A>