In order to sell your holdings via an Express Deal, you need to hold at least 2% of the initial fund (in addition to holding the position for at least a year). Additionally, the size of your sale must also clear the 2% threshold. As 2% of a given fund differs from fund to fund, the number of shares you will need to hold/sell to hit this 2% requirement for sale will differ depending on the size of the given fund and your initial investment.