The repo market is pivotal to other financial markets, particularly those in bonds and derivatives. Despite its importance it is hard to obtain figures on the size of the European repo market and the ICMA survey is the only authoritative source of data for its size and composition. For the most recent survey a sample of financial institutions in Europe were asked for the value of their repo contracts that were still outstanding at close of business on a single day in December 2021. Replies were received from 57 institutions, representing the majority of significant players in the European repo market. All institutions who participate in the survey automatically receive, in confidence, a list of their rankings in the various categories of the survey. The results of this, the forty-second semi-annual survey of the repo market in Europe set the baseline figure for market size at EUR 9,198 billion. […]