Luciano Somoza, Tammaro Terracciano, 03 December 2019

Policymakers are concerned about the stability of private digital currencies and protecting the consumers who use them. This column, part of VoxEU debate on the future of digital money, proposes locking stablecoins into an ETF-like structure with restrictions on basket composition. Stablecoin providers would be functionally similar to ETF sponsors, and stablecoins would become a new vehicle for traditional fiat currencies. 

Alex Chinco, Vyacheslav Fos, 14 May 2019

Noise makes financial markets possible. The column investigates an overlooked source of noise, namely, that in modern markets it is computationally infeasible to predict how even simple, rational trading rules interact to create net demand for a stock. For example, empirical data suggest that we can predict whether a stock will be affected by an exchange-traded fund portfolio rebalancing cascade, but not how.

Nathan Converse, Eduardo Levy Yeyati, Tomás Williams, 20 March 2018

The share of fund assets held in exchange-traded funds has risen from 3.5% in 2005 to 14% in 2017, and to 20% for funds in emerging market assets. This column uses reported investor flows to argue that this is related to increased exposure of aggregate portfolio equity capital inflows to global risk. On this evidence, exchange-traded fund flows amplify the global financial cycle.

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