Opinion: High-frequency trading payoff tied to news — Haoxiang Zhu

MIT Sloan Asst. Prof. Haoxiang Zhu

From MarketWatch

The dramatic speed of financial transactions can be matched only by the intensity of the controversy surrounding it, especially when it comes to high-frequency trading.

In markets for stocks, futures and foreign exchange, transactions take place in milliseconds to microseconds (or even nanoseconds). Markets for fixed-income securities including corporate bonds and over-the-counter derivatives such as interest-rate swaps are also catching up quickly by adopting electronic trading.

To many, the “Flash Crash” of May 2010 was a wake-up call for reevaluating market structure. A series of technology glitches proved to be highly costly for some brokers, proprietary firms and marketplaces in terms of both profits and reputation. The SEC launched investigations into HFT firms and their strategies. French regulators introduced a financial transaction tax. Author Michael Lewis wrote “Flash Boys.” The list goes on.

With this fallout comes important economic questions: What are the costs and benefits to investors for speeding up trading? Is there an “optimal” trading frequency at which the financial market should operate? And does a faster market affect one group of investors more than another?

In a recent research paper, “Welfare and Optimal Trading Frequency in Dynamic Double Auctions,” my co-author Prof. Songzi Du (Simon Fraser University) and I attempt to answer these questions.

Read the full post at MarketWatch.

Haoxiang Zhu is an Assistant Professor of Finance at the MIT Sloan School of Management.

In support of transparent financial benchmarks — Darrell Duffie , Piotr Dworczak, Haoxiang Zhu

MIT Sloan Asst. Prof. Haoxiang Zhu

From Vox, CEPR’s Policy Portal

Benchmarks are heavily wired into modern financial markets. For example, trillions of dollars in bank loans and several hundred trillion dollars (notional) of derivatives transactions depend on daily announcements of LIBOR. The WM/Reuters foreign exchange fixings dominate the currency markets, in which there are over $5 trillion of transactions per day. Benchmarks are the basis for trade of a wide range of commodities such as gold, silver, oil, and natural gas. They have also been the focus of scandals (Brousseau et al. 2013).

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“Dark Pools” can improve price discovery in open exchanges — Haoxiang Zhu

MIT Sloan Asst. Prof. Haoxiang Zhu

When big investors want to execute trades but fear the size of the transaction could move the market, they often go to dark pools—alternative trading systems where orders are not publicly displayed. These opaque trading venues, now accounting for about 12 percent of equity trading volume in the United States, have sparked concern among regulators and in the financial press. With so many transactions occurring out of public view, critics warn that price discovery, the accurate determination of asset prices, will become more difficult. Read More »