What does QQ stand for in an ISIN e.g. QQ5987655448?
A security is allocated an ISIN that starts with QQ when the company is going through a corporate Action, such as a takeover. The company being taken over will be allocated a temporary ISIN code (i.e. a dummy ISIN) which will begin with QQ. Once the Corporate action is finalised the security will then be allocated a new ISIN. Normally this process will not last too long and the security can have a Trading status whilst this is going on.
