The efficient markets hypothesis: The demise of the demon of chance?

Many commentators have suggested that economists in general and financial economists in particular have some responsibility for the recent global financial crisis. They were blinded by an irrational faith in a discredited Efficient Markets Hypothesis and failed to see the bubble in asset prices and to give due warning of its collapse. There is considerable confusion as to what this hypothesis is and what it says. The irony is that the strong implication of this hypothesis is that nobody, no practitioner, no academic and no regulator had the ability to foresee the collapse of this most recent bubble. While few economists believe it is literally true, this hypothesis is considered a useful benchmark with some important practical implications. Indeed, a case can be made that it was the failure to believe in the essential truth of this idea, which was a leading factor responsible for the global financial crisis .     

Is financial reporting shaped by equity markets or by debt markets? An international study of timeliness and conservatism

We hypothesize debt markets—not equity markets—are the primary influence on “association” metrics studied since Ball and Brown (1968 J Account Res 6:159–178). Debt markets demand high scores on timeliness, conservatism and Lev’s (1989 J Account Res 27(supplement):153–192) R ², because debt covenants utilize reported numbers. Equity markets do not rate financial reporting consistently with these metrics, because (among other things) they control for the total information incorporated in prices. Single-country studies shed little light on debt versus equity influences, in part because within-country firms operate under a homogeneous reporting regime. International data are consistent with our hypothesis. This is a fundamental issue in accounting.     

Did crisis alter trading of two major oil futures markets?

The paper analyzes how traders in two major oil futures markets: New York Mercantile Exchange (NYMEX) and Intercontinental Exchange, reacted to the 2008 financial crisis, particularly whether they shifted their trading pattern and whether the relative information role of the two markets changed. Using trade-by-trade data, the paper analyzes several trading characteristics including trading volume, trade size, volatility, bid–ask spread, and relative information share. On average, NYMEX is characterized by greater volume, trade size and slightly greater spread. Before the crisis, NYMEX leads the process of price discovery, and volatility and trade size are significant factors explaining this leadership. However, following the financial crisis of 2008, the leadership role of NYMEX declines and trade size and volatility are no longer significant factors. Contrary to results of most equity market research, bid–ask spread is not a significant factor in information share and causality tests indicate that causality runs from spread to information share before the crisis but the opposite holds during the crisis period.     

An analysis of commodity markets: What gain for investors?

In this paper we study whether the commodity futures market predicts the commodity spot market. Using historical daily data on four commodities—oil, gold, platinum, and silver—we find that they do. We then show how investors can use this information on the futures market to devise trading strategies and make profits. In particular, dynamic trading strategies based on a mean–variance investor framework produce somewhat different results compared with those based on technical trading rules. Dynamic trading strategies suggest that all commodities are profitable and profits are dependent on structural breaks. The most recent global financial crisis marked a period in which commodity profits were the weakest.     

Can markets stimulate rights? On the alienability of legal claims

The alienability of legal claims holds the promise of increasing access to justice and fostering development of law. I develop a principal‐agent framework where litigation funders provide expertise in reducing uncertainty in agents' disutility of production. The model leads to the counterintuitive prediction that litigation funders prefer cases with novel issues, and social surplus is positively correlated with legal uncertainty. Consistent with the model, court backlog, court expenditures, and a slowing in average time to completion are associated with third‐party funding; cases with third‐party funding receive more citations and are reversed less often than comparable cases without such arrangements.     

Can hedge funds time global equity markets? Evidence from emerging markets

This paper examines the ability of global hedge funds to time a particularly volatile asset class — emerging market equities. In particular, we study whether or not these funds can either time emerging markets as a whole, or time their exposures to different regions. Using both pooled and calendar-time approaches, we generally find no evidence of overall timing ability. However, we do find some evidence of period-specific timing ability during the financial crisis and subsequent recovery.     

What drives portfolio investments of German banks in emerging capital markets?

After decades of steady liberalization and financial market development, emerging capital markets experienced unparalleled capital inflows in the aftermath of the emerging markets crisis of the 1990s. This paper studies portfolio investment decisions of German banks in emerging capital markets from 2002 to 2007. The use of a dynamic time-series cross-section framework and the micro database External Position Report provided by Deutsche Bundesbank permit insights into the various determinants of portfolio investments in ECMs. For example, there is evidence that German banks take into account the various dimensions of financial market development in their portfolio investment decisions and anticipate the special risks inherent in emerging markets. Proxies for the overall development and efficiency of capital markets have the highest economic significance of all variables. The introduction of depositary receipts programs has a positive impact on stock market investment. Moreover, there is evidence that global risk aversion exerts a significant influence in times of financial turmoil.     

Are firms from developed markets more international than firms from emerging markets?

Regionalist supporters’ claim that most of the world's largest firms are regional rather than global and that managers should be encouraged to ‘think regional, act local and forget global’ (Rugman and Moore, 2004, p. 67). We apply the matrix of multinationality proposed by Aggarwal et al. (2011) to a sample of the world's 500 largest corporations, the Fortune Global 500. We show that these firms range from purely domestic to regional, trans-regional and entirely global with most lying in the trans-regional and global categories. Our results imply that global strategies are essential to international trade and management in today's business environment. We compare multinationality results by market type (developed versus emerging market), industry, size and age. We find that firms from more advanced economies tend to be older, larger and more multinational than firms from emerging markets. We find no relationship between multinationality and age or multinationality and size, and conclude that developed market firms are not more multinational as a result of size, age or industrial structure.     

The fair value of a token: How do markets price cryptocurrencies?

With the rise of cryptocurrency tokens as a new asset class, the question of the fair evaluation of a cryptocurrency token has become a question of increasing importance. We estimate the pricing kernel with which users price factors affecting their token holdings. We investigate how traditional risk factors such as market risk are evaluated, as well as how blockchain specific risk factors are priced in. In order to do so, we introduce an asset pricing model and modify its properties to make it applicable to cryptocurrency markets. We group the risk factors into market related and Bitcoin- and Ethereum blockchain specific risk factors. We find that blockchain specific risk factors are priced in. There is evidence that risk factors have moved from Bitcoin to Ethereum specific risk factors with an increasing importance of market factors, providing evidence for a decoupling of on-chain and off-chain trading activity.     

Risk aversion and the dynamics of optimal liquidation strategies in illiquid markets

We consider the infinite-horizon optimal portfolio liquidation problem for a von Neumann–Morgenstern investor in the liquidity model of Almgren (Appl. Math. Finance 10:1–18, 2003). Using a stochastic control approach, we characterize the value function and the optimal strategy as classical solutions of nonlinear parabolic partial differential equations. We furthermore analyze the sensitivities of the value function and the optimal strategy with respect to the various model parameters. In particular, we find that the optimal strategy is aggressive or passive in-the-money, respectively, if and only if the utility function displays increasing or decreasing risk aversion. Surprisingly, only few further monotonicity relations exist with respect to the other parameters. We point out in particular that the speed by which the remaining asset position is sold can be decreasing in the size of the position but increasing in the liquidity price impact.      

Too fast or too slow? Determining the optimal speed of financial markets

Market quality is maximized at intermediate batch auction intervals of a few seconds when markets are neither too fast nor too slow and clearing price is near equilibrium     

Do birds of the same feather flock together?: The case of the Chinese states equity markets

We examine the equity market price interdependence between China, Hong Kong, Singapore, and Taiwan based on the [Journal of Econometrics 66 (1995) 225] causality test which we bootstrap with leveraged adjustments. A new information criterion is used to choose the optimal lag order. We cover the period January 1, 1993–September 10, 2001 taking into account the Asian financial crisis in 1997. We find that before the Asian crisis, the only interaction among the Chinese markets was between Singapore and the markets of Taiwan and Hong Kong with the causality running from the former to the latter. However, after the Asian crisis, the Chinese equity markets became more interdependent among themselves although Hong Kong remained non-influential.     

How do IMF announcements affect financial markets in crises?: Evidence from forward exchange markets

We employ a theoretical model to interpret the liquidity and moral hazard effects of IMF support during a financial crisis. We then estimate the response of forward exchange markets to IMF-related announcements, using data on the 3-, 9-, and 12-month forward exchange rates. Our results indicate that the announcement of IMF negotiations is associated with a premium on the baht and the rupiah, where the premium is much larger on the latter. This result is largely consistent with the responses of stock and bond markets, especially when country-specific data are employed.     

Are stock and real estate markets integrated? An empirical study of six Asian economies

Rising asset prices spurred by Asia's emerging economy have drawn much attention recently. This study examines one source of growth patterns in asset prices by analyzing the integration relationship between stock markets and real estate markets in Asia. Six economies are selected for empirical analysis: China, Hong Kong, Japan, Singapore, South Korea, and Taiwan. Results show that stock markets are integrated with real estate markets in Japan, and partially integrated with real estate markets in China, Hong Kong, and Taiwan. This implies that these two investment vehicles are substitutable in China, Hong Kong, Japan, and Taiwan, and provide diversification potential for investment portfolios in South Korea and Singapore. Examining the timing of market changes, we found the real estate market leading the stock market in some countries, and the stock market leading the real estate market in others. We conclude that stock and real estate markets show a variety of inter-relationships depending on economic and political policy environments.     

U.S. takeovers in foreign markets: Do they impact emerging and developed markets differently?

We investigate the effect that U.S. acquisitions of targets in emerging and developed countries have on the targets' rivals by measuring their stock price reaction to the acquisition announcement. On average, emerging market rivals react positively to these acquisitions while the reaction in developed markets is insignificant. In developed markets, the main factors explaining the reaction of rival firms are individual rival characteristics such as rival size, efficiency, growth opportunities, and leverage. In contrast, in emerging markets, country, industry, and acquisition characteristics such as economic development, shareholder protection, and the target's public status, industry, and percent acquired, play a more important role.     

Does the law of one price hold in international financial markets? Evidence from tick data

This paper investigates the validity of the law of one price (LOP) in international financial markets by examining the frequency, size and duration of inter-market price differentials for borrowing and lending services (‘one-way arbitrage’). Using a unique data set for three major capital and foreign exchange markets that covers a period of more than seven months at tick frequency, we find that the LOP holds on average, but numerous economically significant violations of the LOP arise. The duration of these violations is high enough to make it worthwhile searching for one-way arbitrage opportunities in order to minimize borrowing costs and/or maximize earnings on given funds. We also document that such opportunities decline with the pace of the market and increase with market volatility.     

The influence of cultural factors on price clustering: Evidence from Asia–Pacific stock markets

Price clustering is the tendency of prices to be observed more frequently at some numbers than others. It increases with haziness, or imprecision, about underlying value. Most research on price clustering has been conducted in Western financial markets, where there is manifest preference for trading at round numbers.We focus on number preferences under Chinese culture. Many Chinese believe some numbers are “unlucky” and to be avoided. For instance, the number 4 is inauspicious because the Cantonese pronunciation of 4 is similar to the phrase “to die”. We first document clustering of daily closing prices on six Asia–Pacific stock markets, three with predominantly Chinese populations. Next, we fit binomial logit models within these markets to estimate the association between structural and economic factors, and culture, on price clustering. We find some support for the influence of Chinese culture and superstition on year-round number preferences of traders, but it is located solely in the Hong Kong market. Furthermore, in the Hong Kong market Chinese culture and superstition help explain the increased avoidance of the number 4 during the auspicious Chinese New Year, Dragon Boat and Mid-Autumn festivals.     

An examination of the impact of the Sarbanes–Oxley Act on the attractiveness of U.S. capital markets for foreign firms

We examine whether voluntary deregistrations after the passage of Sarbanes–Oxley Act of 2002 (SOX) were intended to benefit common shareholders by avoiding firms’ costs of complying with SOX or to protect the control rents of managers or controlling shareholders (MCOs). We find that, compared with foreign firms that maintained their SEC registrations, foreign firms that voluntarily deregistered on average had weaker corporate governance, had a significantly less negative stock market reaction when SOX was passed, and suffered a significant price decline when they announced their decision to deregister. We also find evidence indicating that the deregistrations were (to a lesser extent) motivated by firms’ compliance costs related to SOX. Taken together, our results suggest that both agency costs (that is, private benefit of control of the MCOs) and the compliance cost of SOX play a role in motivating foreign firms to withdraw from the U.S. market.