CREST is not an individual stock ticker or a specific publicly traded company security; rather, it refers to the electronic settlement and depository system used in the United Kingdom and Ireland to hold and transfer shares safely. When people talk about CREST in relation to equities, they are usually referring to shares held electronically within the CREST depository system rather than a physical paper share certificate. Investors must use a registered broker or nominee account connected to the system to trade and manage these dematerialized securities efficiently across the London Stock Exchange.