ESMA published their Annual Statistical Report outlining EU Derivatives market structure and market trends in 2018.
Total outstanding notional has grown by just over 10% year to year reaching 735 trillion euro over 66 billion trades. Investment firms account for about 34% of the market notional amount, followed by CCPs (32%) and credit institutions (21%)
Majority (76%) of the outstanding notional was tied to interest rate derivatives out of which 63% was centrally cleared (2% clearing growth year to year, however we can observe over 80% of new IR contracts being cleared).
In terms of number of transactions currencies account for nearly half of the market volume.
For more information see: https://www.esma.europa.eu/document/asr-eu-derivatives-markets-2019