Resumen
This paper analyzes the effect of the concentration of stock ownership (mixed or private) on the liquidity of shares in the Colombian stock market, for a representative sample of 15 companies listed on that market during the period between 2010 and 2016. The results show an inverse relationship between these variables; that is, while ownership concentration increases, liquidity decreases. However, the model has a low significance level, thus, it may be linked to other aspects that are associated with the use of information regarding the issuance and placement of shares by companies.