This is not a particularly difficult task, but because there may be a general lack of demand for the issue, selling the security at an advantageous price may not be easy. (us.etrade.com)
In my mind, you can't use winter time sales when the market is typically weak and prices are between 5 and 10 % lower because of lack of demand. (terryburger.com)
Much of it is due to demand or lack of demand as interest rates change. (novelinvestor.com)