Since the innovation of credit default swaps (CDSs) in 1997, the market for CDSs grew dramatically to $62 trillion in 2007 (ISDA 2010). However, this market declined significantly with the onset of the GFC, prompting the question, 'What lies behind the phenomenal growth and the eventual collapse of the CDS market?' Using CDS spread data from 319 bank and non-bank financial institutions across 33 countries over the period 2001-2010, I provide evidence of the determinants that affect risk-taking by financial institutions, proxied by CDS spreads, and argue within an agency theoretical framework that managerial risk-taking contributed to the 'rise and fall' of the CDS market.