Rent controls still exist in mainland China and Western countries, and will continue for the foreseeable future. In China, rent controls have resulted in severe housing shortages, poor management and maintenance of the housing stock, and an increasingly heavy financial burden on the state. China...

An increasing volume of experienced trading tends to reduce autocorrelation and make the market more efficient. Autocorrelation in daily returns changes over time and the changes were less frequent than would be expected if the changes were random, but the changes are random recently....