As my company is not listed, the investment banks apply an illiquidity premium. Actually, they say it is an illiquidity premium but then they call it a small cap premium. One of the banks, apparently based on Titman y Martin (2007), added the following small cap premiums: “0.91% if the capitalization is situated between $1,167 and $4,794 million; 1.70% if the capitalization is between $331 and $1,167 million; 4.01% if it is lower than $331 million”. Another bank adds 2% because historically the return of small companies was smaller than that of big companies. Which one is more appropriate?