ECB tapering: beware of global consequences

▀ The ECB's scaling back of its QE programme in 2018 could be more disruptive to global financial markets than the Federal Reserve's ongoing balance sheet unwinding. ECB bond purchases led Eurozone private investors to inject a massive amount of funds into global debt markets over the last few years. As the ECB reduces its stimulus, Eurozone investors will gradually pare back the build‐up of their foreign debt exposures. The full unwinding of ECB QE will see investors rebalance toward domestic debt securities . ▀ We expect Eurozone investors to continue injecting funds into global debt markets as the ECB proceeds to wind down its QE, but they will do so at a much slower pace. Based on our projections, European purchases of foreign debt securities this year will total €200 billion – down by half from the average €400 billion over the last three years. Such a large reduction raises the risk of disruption in some markets. ▀ How did we get here? Spillovers from the ECB's QE were much more pronounced than during Fed's. European private investors that sold bonds to the ECB during its QE programme faced a commensurate shortage of domestic debt assets. In contrast to the US experience, ECB buying far exceeded new domestic issuance, inducing private investors to sharply increase purchases of overseas debt securities. ▀ Ultimately, we expect European investors to seek to restore the share of domestic debt securities in their portfolios to a level in line with the historical norm, after the proportion of their domestic debt holdings fell by 7pp since the programme began. The rebalancing is likely to start in earnest once the ECB stops buying (and eventually starts selling) securities. As a result, the global debt issuance boom is likely to lose steam, given the extent to which it has relied on the support of European investors.