This study investigates the effect of the free float ratio (FFR) on stock return, risk, and trading activity in the Turkish capital market. Daily free float ratios are calculated 194 firms trading on Istanbul Stock Exchange for the period between 25.02.2011 and 09.03.2012. Results show no relationship between free float ratio and price return. On the other hand, trade activity and price volatility are significantly positively correlation with free float ratio.