We use rich regulatory data on intraday transactions and end-of-day positions of traders in nine futures markets over the past ten years to examine how participation of high-frequency traders (HFTs) affects market quality. Absence of market fragmentation and off-exchange trading in the contracts...

Using CFTC's regulatory data that includes identities of all market participants, we study the dynamics of single-name and index credit default swaps (CDS) leading up to, during, and in the aftermath of the COVID-related financial markets turmoil of 2020. The paper reports volume and...