After a decade of unprecedented liquidity injections by central banks to preserve the western financial system, global QE has peaked.

First, the aggregate balance sheet of major central banks started to shrink earlier in the year, a reversal that took investors many months to notice but judging by recent market volatility, it is finally being fully appreciated.

Second, beginning this month the Fed’s bond portfolio run-offs as part of its QT are roughly offsetting the combined tapered net QE purchases by the ECB and BoJ. Worse, QT is now set to dominate.

Some facts: between mid-2008 and early 2018, the “Big-6” central banks expanded their balance sheets by nearly $15tn, most of it due to explicit targeted purchases of domestic assets (QE) in addition to other forms of liquidity injections (collateralised lending such as the ECB’s TLTROs or FX interventions equivalent to foreign-asset QE).

According to Deutsche Bank estimates, the four major central banks involved in QE (Fed, ECB, BoJ and BoE) are now collectively holding $11.3tn of securities accumulated through their asset purchase programs.

Why is the above important? Because as Deutsche strategist Michal Jezek, now that liquidity is contracting makes for a timely moment for looking at the proportion of relevant asset classes owned by central banks and putting the ECB’s corporate bond holdings into a wider context.

To begin, as Jezek confirms what we have been saying since the start of 2009, “clearly, QE matters.” As central banks reduced the free float of some securities and QE has worked its magic on confidence and growth, asset valuations reached unprecedented levels while volatility became suppressed. A couple of years ago, a quarter of the global bond market was trading with a negative yield. With global QE fading, this proportion has now fallen by half but remains significant.

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