Publications in Financial Times Top 50 Journals

How fast should trades settle?, 2020, with Mariana Khapko
Management Science, ​Forthcoming [slides] [The Conversation (French) coverage]
Does faster settlement benefit markets? Real-time settlement, coupled with a flexible option-like penalty for failures-to-deliver, disciplines competition on securities lending markets, reduces borrowing costs, and therefore improves market quality.  
Need for Speed? Exchange Latency and Liquidity, 2017, with Albert J. Menkveld
Review of Financial Studies, 30 (2017), 1188--1228 [slides] [Bloomberg, VoxEU coverage]
​Speeding up the exchange does not necessarily improve liquidity. Since HFTs employ both market-making and arbitrage strategies, the net effect of a faster market depends on a security’s news-to-liquidity-trader ratio.

Other publications

Speed and Learning in High-Frequency Auctions, 2020, with Marlene Haas and Mariana Khapko
Journal of Financial Markets, ​Forthcoming [Josseph de la Vega Award 2016] [The Conversation (French) coverage]
On high-frequency batch auctions markets, the HFT ``arms' race'' in speed stimulates price competition between arbitrageurs and improves liquidity.
Too-International-to-Fail? Supranational Bank Resolution and Market Discipline, 2016, with Lucy Gornicka
Journal of Banking and Finance 65 (2016), 41--58 [slides] [VoxEU coverage]
​Supranational regulators are more inclined to bail-out banks indebted towards international creditors because they take into account cross-border contagion. When banks' creditors are more likely to be bailed out, market discipline decreases.

Working papers

The Value of ETF Liquidity, 2020, with Marta Khomyn and Tālis J. Putniņš
[Medium post] [Microstructure Exchange seminar]
ETF liquidity plays a key role in determining fees. More liquid ETFs charge higher fees in equilibrium and attract shorter horizon investors. The higher turnover of these investors endogenously sustains the ETF's high liquidity.
Crowded Analyst Coverage, 2020, with Charles Martineau
​[Medium post] [Future of Financial Information talk]
The most-covered 5% U.S. equities amount to 25% of earnings forecasts. Is information supply optimally distributed in financial markets? For limited investor attention, analysts prefer to share a crowded space rather than to cover more opaque assets. 
Liquid Speed: A Congestion Fee for Low-Latency Exchanges, 2020, with Michael Brolley
[Medium post] [Machine Lawyering coverage]
We propose a dynamic pricing "order congestion fee" on securities' exchanges to reduce negative externalities associated with high-frequency trading and to reduce the impact of micro-bursts on exchange infrastructure.
Do speed bumps curb speed investment? Evidence from a pilot experiment, 2020, with Mariana Khapko
Revise and Resubmit at Journal of Financial Markets
In a market design experiment conducted at the University of Toronto, we find that introducing a speed bump reduces arbitrageurs' investment in speed, but only if the speed bump is asymmetric across liquidity takers and providers.
Asset management at the zero-fee bound, 2019
​[Medium post] [Canadian Investment Review coverage]
Security lending revenue generates a hedging benefit that funds do not internalize. ​In equilibrium, funds holding riskier underlying portfolios are more transparent, pay higher dividends, and charge higher fees than funds with safer investments.
​Does Central Clearing Affect Price Stability? Evidence from Nordic Equity Markets, 2015, with Albert Menkveld and Emiliano Pagnotta
Revise and Resubmit at Journal of Financial Economics
We provide evidence of the effects of introducing a central clearing counterparty (CCP) on price stability using a 2009 clearing reform in three Nordic equity markets. We find that volatility drops by 8.8% relative to pre-reform levels.

Work in progress

Security Lending and Fund Fees, with Tamara Nefedova and Gianpaolo Parise