The Turkish Statistical Institute (TurkStat) announced on Monday that Government Domestic Debt Instruments, a financial investment tool, yielded the highest monthly real profit with rates of 1.10 percent and 0.69 percent respectively, according to the Domestic Producer Price Index (D-PPI) and Consumer Price Index (CPI). According to the D-PPI, the monthly real profit rates of deposit interest and the dollar were 0.72 percent and 0.31 percent, respectively. However, investors in gold ingot, the euro and the stock exchange lost 4.01 percent, 1.46 percent and 0.31 percent, respectively.