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Forex trading and the WMR Fix

Journal of Banking & Finance 2018 87, 233-247 open access
I examine the behavior of forex prices around the setting of the 4:00 pm WMR Fix. Numerous banks have been fined by regulators for their trading activities around the Fix, but the overall impact of their actions is not known. I first examine trading patterns around the Fix in a microstructure model of competitive trading. I then compare the model with the empirical behavior of forex prices across 21 currencies over a decade. Contrary to the predictions of the model, forex price changes display extraordinary volatility and negative serial correlation around the Fix.

Investment-Banking Relationships: 1933–2007

The Review of Corporate Finance Studies 2018 7(2), 194-244 open access
We study the evolution of investment-banking relationships from 1933 to 2007. Relationship exclusivity and client concerns for the state of their banking relationships were strong through the first part of our sample period but then entered a period of sharp decline beginning around 1970. We interpret the bank-client relationship as an informal governance mechanism for curbing opportunistic behavior in a weak contracting environment and examine how technological change aggravated conflicts of interest within investment banks and between banks and their clients. This perspective sheds light on why trust between banks and their clients now appears to be in short supply.Received March 2, 2018; editorial decision June 11, 2018 by Editor Paolo Fulghieri.

A Theory of Costly Sequential Bidding

Review of Finance 2018 22(5), 1631-1665 open access
We model sequential bidding in a private value English auction when it is costly to submit or revise a bid. We show that, even when bid costs approach zero, bidding occurs in repeated jumps, consistent with certain types of natural auctions such as takeover contests. In contrast with most past models of bids as valuation signals, every bidder has the opportunity to signal and increase the bid by a jump. Jumps communicate bidders’ information rapidly, leading to contests that are completed in a few bids. The model additionally predicts; informative delays in the start of bidding; that the probability of a second bid decreases in, and the jump increases in, the first bid; that objects are sold to the highest valuation bidder; and that revenue and efficiency relationships between different auctions hold asymptotically.

Fuzzy Differences-in-Differences

Review of Economic Studies 2018 85(2), 999-1028 open access
Difference-in-differences (DID) is a method to evaluate the effect of a treatment. In its basic version, a “control group” is untreated at two dates, whereas a “treatment group” becomes fully treated at the second date. However, in many applications of the DID method, the treatment rate only increases more in the treatment group. In such fuzzy designs, a popular estimator of the treatment effect is the DID of the outcome divided by the DID of the treatment. We show that this ratio identifies a local average treatment effect only if the effect of the treatment is stable over time, and if the effect of the treatment is the same in the treatment and in the control group. We then propose two alternative estimands that do not rely on any assumption on treatment effects, and that can be used when the treatment rate does not change over time in the control group. We prove that the corresponding estimators are asymptotically normal. Finally, we use our results to reassess the returns to schooling in Indonesia.

The Scarcity Value of Treasury Collateral: Repo-Market Effects of Security-Specific Supply and Demand Factors

Journal of Financial and Quantitative Analysis 2018 53(5), 2103-2129 open access
We quantify the scarcity value of Treasury collateral by estimating the impact of security-specific demand and supply factors on the specific collateral repurchase agreement (repo) rates of all outstanding U.S. Treasury securities. We find a positive and significant scarcity premium for on- and off-the-run Treasuries that persists for approximately 3 months and is larger in magnitude for shorter-term securities. This scarcity effect seems to pass through to Treasury cash market prices, providing additional evidence for the scarcity channel of quantitative easing (QE). On the contrary, the Federal Reserve’s reverse repo operations could help reduce the scarcity premium by alleviating potential shortages of high-quality collateral.

Tips from TIPS: The Informational Content of Treasury Inflation-Protected Security Prices

Journal of Financial and Quantitative Analysis 2018 53(1), 395-436 open access
Treasury Inflation-Protected Securities (TIPS) are frequently thought of as risk-free real bonds. Using no-arbitrage term structure models, we show that TIPS yields exceeded risk-free real yields by as much as 100 basis points when TIPS were first issued and up to 300 basis points during the 2007–2008 financial crisis. This spread predominantly reflects the poorer liquidity of TIPS relative to nominal Treasury securities. Other factors, including the indexation lag and the embedded deflation protection in TIPS, play a much smaller role. Ignoring this spread also significantly distorts the informational content of TIPS break-even inflation, a widely used proxy for expected inflation.

Media Coverage and Stock Returns on the London Stock Exchange, 1825–70

Review of Finance 2018 22(4), 1605-1629 open access
News media plays an important role in modern financial markets. In this article, we analyze the role played by the news media in an historical financial market. Using The Times’s coverage of companies listed on the London stock market between 1825 and 1870, we examine the determinants of media coverage in this era and whether media coverage affected returns. Our main finding is that a media effect mainly manifests itself after the mid-1840s and that the introduction of arm’s-length ownership along with markedly increased market participation was the main reason for the emergence of this media effect.

Measuring systemic vulnerability in European banking systems

Journal of Financial Stability 2018 36, 279-292 open access
We construct a measure of systemic vulnerability in selected EU banking systems using an indirect, time-varying measure of the system covariance. Systemic vulnerability indicates the extent to which a banking system as a whole is sensitive to a negative shock. We proceed to examine to what extent the resulting measures of systemic vulnerability provide a convincing narrative of events during the period January 2000 to April 2016. The results provide evidence of: (i) rising vulnerability prior to the outbreak of the international financial crisis in 2007/08 in countries with banks exposed to toxic assets; (ii) vulnerability associated with the euro area sovereign debt crisis from 2009/10; and (iii) continued concerns from 2013 onwards regarding the need for euro area banks to improve their balance sheets and raise new capital at a time of sluggish profitability.