Does vega-neutral options trading contain information?

This study suggests a novel approach for decomposing net options demands into the options order imbalances with and without volatility risk. By analyzing a high-frequency index futures and options dataset, we examine the information content of (i) the direction-motivated order imbalance induced by a single option type, which is exposed to volatility risk, and (ii) that constructed by both calls and puts, which is vega-neutral. The aggregate options order imbalance does not convey information after controlling for futures market trading. However, the intraday options order imbalance by trading without volatility risk significantly predicts spot index returns, though its longer-horizon forecasting ability is relatively weak because of a possible cross-market hedging effect. The predictive abilities of informed foreigners’ trades and out-of-the-money options trading are prominent. Our empirical results suggest that the vega-neutral options trading conveys additional information distinct from the futures order imbalance.     

Option trading: Information or differences of opinion?

This paper investigates the motive of option trading. We show that option trading is mostly driven by differences of opinion, a finding different from the current literature that attempts to attribute option trading to information asymmetry. Our conclusion is based on three pieces of empirical evidence. First, option trading around earnings announcements is speculative in nature and mostly dominated by small, retail investors. Second, around earnings announcements, the pre-announcement abnormal turnovers of options seem to predict the post-announcement abnormal stock returns. However, once we control for the pre-announcement stock returns, the predictability completely disappears, implying that option traders simply take cues from the stock market and turn around to speculate in the options market. Third, cross-section and time-series regressions reveal that option trading is also significantly explained by differences of opinion. While informed trading is present in stocks, it is not detected in options.     

Is trading in the shortest-term index options profitable?

Review of Derivatives Research - The aim of this study is to examine the return rates of the TAIEX options with at most 8 calendar days to maturity using a buy-and-hold strategy. Although our...     

Did TARP reduce or increase systemic risk? The effects of government aid on financial system stability

Theory suggests that government aid to banks may either reduce or increase systemic risk. We are the first to address this issue empirically, analyzing the Troubled Assets Relief Program (TARP). Analysis suggests that TARP significantly reduced contributions to systemic risk, particularly for larger and safer banks, and those in better local economies. This occurred primarily through a capital cushion channel that reduced market leverage by increasing the value of common equity. Results are robust to endogeneity and selection bias checks. Findings yield policy conclusions about whether to aid banks, the best targets for future assistance, and short-term versus long-term effects.     

Keep on smiling? The pricing of Quanto options when all covariances are stochastic

The paper introduces a model for the joint dynamics of asset prices which can capture both a stochastic correlation between stock returns as well as between stock returns and volatilities (stochastic leverage). By relying on two factors for stochastic volatility, the model allows for stochastic leverage and is thus able to explain time-varying slopes of the smiles. The use of Wishart processes for the covariance matrix of returns enables the model to also capture stochastic correlations between the assets. Our model offers an integrated pricing approach for both Quanto and plain-vanilla options on the stock as well as the foreign exchange rate. We derive semi-closed form solutions for option prices and analyze the impact of state variables. Quanto options offer a significant exposure to the stochastic covariance between stock prices and exchange rates. In contrast to standard models, the smile of stock options, the smile of currency options, and the price differences between Quanto options and plain-vanilla options can change independently of each other.     

To buy or not to buy? The value of contradictory analyst signals

We study the predictive ability of individual analyst target price changes for post-event abnormal stock returns within each recommendation category. Although prior studies generally demonstrate the investment value of target prices, we find that target price changes do not cause abnormal returns within each recommendation level. Instead, contradictory analyst signals (e.g., strong buy reiterations with large target price decreases) neutralize each other, whereas confirmatory signals reinforce each other. Further, our analysis reveals that large target price downgrades can be explained by preceding stock price decreases. However, upgrades are not preceded by stock price increases, thereby demonstrating asymmetric analyst behavior when adjusting target prices to stock prices. Our results suggest that investors should treat recommendations with caution when they are issued with large contradictory target price changes. Thus, instead of blindly following a recommendation, investors might put more weight on the change in the corresponding target price and consider transaction costs.     

Does informed trading occur in the options market? Some revealing clues

This paper analyses the relationship between proxy variables for informed trading in the options market and a set of exogenous news variables. The aim was to test directly for the presence or absence of informed trading in the options market and for the possible impact of this trading on underlying asset prices. Our findings reveal that potential informed trading in options markets is channelled basically through out‐of‐the‐money options, except for volatility trading which mainly involves at‐the‐money options because of their liquidity. In both cases, we have found evidence in favour of investors’ strategic fragmentation of transactions into intermediate size trades (stealth trading). Finally, it is shown that lack of consensus among agents also generates increased trading, particularly in out‐of‐the‐money and at‐the‐money options.     

Do voluntary corporate restrictions on insider trading eliminate informed insider trading?

We investigate whether voluntary corporate restrictions on insider trading effectively prevent insiders from exploiting their private information. Our results show that insiders of firms with seeming restrictions on insider trading continue to take advantage of positive private information while being more cautious when exploiting negative private information. The results suggest that insiders continue to exploit their informational advantages in a way that minimizes their legal risk. We also find that the degree of information asymmetry is significantly lower in firms with restriction policies and that corporate governance significantly affects firms' decisions to adopt these policies.     

The effects of trading rights and ownership structures on the informativeness of accounting earnings: Evidence from China’ split share structure reform

This paper examines how the removal of trading restrictions and ownership structures affect earnings informativeness by investigating the changes in the earnings-return relation around China’s split share structure reform. I find the reform has a negative impact on the relationship between controlling shareholders’ ownership and earnings informativeness, which is consistent with the idea that the removal of trading restrictions gives controlling shareholders incentives to influence the stock price through managing earnings. I also find that earnings informativeness decreases with the reduction in controlling shareholders’ ownership. This dilution effect is more significant for firms with non-state controlling shareholders or with controlling shareholders that are not monitored by other large shareholders. The results are consistent with the notion that controlling shareholders provide less informative earnings in response to the dilution of their ownership to avoid the constraints arising from the increased monitoring by outside investors.     

To beat or not to beat? The importance of analysts’ cash flow forecasts

We investigate the implications of firms’ benchmark-beating patterns with respect to analysts’ quarterly cash flow forecasts for firms’ current capital market valuation and their future performance. We hypothesize that nonnegative earnings surprises are more likely to be supported by real operating performance and signal higher earnings quality if they are achieved via higher than expected cash flows or lower than expected accruals. We show that firms beating analyst earnings forecasts have larger positive capital market reactions and larger earnings response coefficients if they beat analyst cash flow forecasts or report lower than expected accruals. We also demonstrate that these firms’ superior future performance may provide an economic justification for their more favorable market response. Our findings suggest that firms’ ability to beat analyst cash flow forecasts is informative regarding the quality of their earnings surprises.     

A note on foreigners’ trading and price effects across firms

We study the investment behavior of foreign investors in association with an equity market liberalization, and find a strong link between foreigners’ trading and local market returns. In the period following the liberalization, net purchases by foreign investors induced a permanent increase in stock prices, suggesting that local firms reduced their cost of equity capital. We also find a strong link between a firm’s fraction of foreign ownership and the magnitude of the cost reduction. Foreign investors seem to prefer large and well-known firms, and these firms realize the largest reduction in capital cost. Furthermore, our analysis suggests that foreigners increase their net holding in firms that have recently performed well. Analyzing foreigners’ performance, we find very little evidence of informed trading, suggesting that risk sharing is the most plausible explanation for the reduction of the cost of equity capital.     

The impact of risk-based regulation on European insurers’ investment strategy

This paper examines the impact of Solvency II on the attainability of target returns, the attainability of portfolio efficiency and the asset allocation of European insurers. I start with a brief introduction to the Solvency II Directive, focusing on the rules for calculating solvency capital requirements (SCR) according to the Solvency II standard formula. The subsequent numerical analysis includes several portfolio optimizations focusing on six relevant asset classes for the 1993–2017 time period. I derive optimal portfolios with respect to the Solvency II capital requirements, with respect to conventional risk measures, and I combine both optimization problems. My results show that the capital requirements according to Solvency II are not adequately calibrated. Nevertheless, due to a solid equity base, the majority of European insurers are still able to attain high target returns and mean-variance-efficiency. However, undercapitalized insurers are not able to hold risk-optimal allocations of equities, real estate and hedge funds any longer. In an environment of very low interest rates, these insurers may also face difficulties obtaining their target returns. To the best of my knowledge, this is the first paper to explicitly incorporate the solvency capital requirement as a numerical constraint into the insurers’ portfolio optimization problem. As a result, my approach first provides insights about the attainable target return and the asset weights as a direct function of insurers’ equity.     

Too much of a good incentive? The case of executive stock options

Using a utility-maximization framework, I show that the incentive to increase stock price does not always increase as more options are granted. Keeping the total cost of his compensation fixed, granting more options creates greater incentives to increase stock price only if option wealth does not exceed a certain fraction of total wealth. Beyond this critical level, granting more options actually reduces incentive effects and becomes counterproductive. In addition, stock options also create incentive to reduce (increase) idiosyncratic (systematic) risk. These incentive effects are sensitive to the choice of exercise price.     

Underwriters’ price support regulation and institutional investors’ trading: The case of the putback option

We examine a period in Korea during which a price supporting regulation called the putback option was imposed on the IPO underwriter. Under the regulation, individual investors of IPO had put options which can be exercised at 90% of IPO price. We find that during the regulation period, institutional investors’ flipping activity is evident not on the days following the IPO but on the days following the expiration of putback option. Our study shows that the regulation results in merely delaying the institutional investors’ documented trading behavior and provides evidence that the relationship between the underwriter and the institutional investors affects the trading of institutional investors.     

Does the weather have impacts on returns and trading activities in order-driven stock markets? Evidence from China

We study the association between weather-related mood factors and stock index returns in an order-driven market, the Shanghai Stock Exchange (SSE) of China. Our results indicate that asset returns are unaffected by changes in mood introduced by factors including the weather and the onset and recovery from SAD. In contrast, many of these variables are strongly correlated with a reduction in market turnover and liquidity, consistent with investor mood driving variations in market activity. Overall, we show that in an order-driven market, environmental impacts on sentiment are likely to affect trading activities, but not returns.     

The information content of stock split announcements: Do options matter?

We provide a new test of the informational efficiency of trading in stock options in the context of stock split announcements. These announcements tend to be associated with positive abnormal returns. Our traditional event study results show abnormal returns that are significantly lower for optioned than non-optioned stocks, whether traded on the NYSE, Amex, or Nasdaq. After controlling for market returns, capitalization, book-to-market ratio, and trading volume, we find that the abnormal returns are significantly lower for NYSE/Amex optioned than non-optioned stocks. Although the results for Nasdaq stocks are not as clear, the overall effects tend to be lower after optioning. These findings are consistent with the hypothesis that the prices of optioned stocks embody more information, diminishing the impact of the stock split announcement. They provide new evidence of the beneficial effects of options on their underlying stocks.     

Does regulation substitute or complement governance?

We examine whether firms utilize governance systems and increased monitoring mechanisms when information asymmetry and managerial discretion are limited. Given that such monitoring is costly, we expect regulated firms to use less monitoring if regulation substitutes for governance. Using data from initial public offerings, we document that regulated firms have greater proportions of monitoring directors and larger boards as well as use similar amounts of equity-based compensation as non-regulated firms. Further, regulated and unregulated firms are analogous in terms of observed trade-offs between traditional monitoring mechanisms and insider ownership. Finally, regulated firms appear to decrease monitoring following a period of deregulation. These findings support the hypothesis that regulation and governance are complements and are consistent with the notion that regulators pressure firms to adopt effective monitoring structures.     

The real effect of banking crises: Finance or asset allocation effects? Some international evidence

This paper analyzes whether the decline in economic growth that follows a banking crisis occurs because of a reduction in the amount of credit available (finance effect) or a worsening in the allocation of investable resources (asset allocation effect). We use a sample of more than 2500 industrial firms in 18 developed and developing countries that experienced 19 systemic banking crises between 1989 and 2007. The results indicate that banking crises negatively affect firms’ intangible investments, which intensifies the economic downturn. The negative growth effect produced by the worsening of the investment allocation is stronger in countries with highly developed financial systems and institutions.     

Double signals or single signal? An investigation of insider trading around share repurchases

We examine directors’ dealing activity around share repurchasing periods in Hong Kong. There are significant insider trading activities before the share repurchasing period. Consistent with the signaling hypothesis, the directors’ purchase activities during the share repurchase period are significantly higher than the expected level while the directors’ sale activities are significantly lower than the expected level. Double signals of share repurchase and directors’ purchases create a stronger signal in conveying undervaluation, while insider sales around share repurchase reduces the undervaluation signal. We find some evidence that is consistent with the free cash flow and signaling arguments for share repurchases.     

The effect of major customer concentration on firm profitability: competitive or collaborative?

We test two potential hypotheses regarding the effects of major customer concentration on firm profitability. Under the collaboration hypothesis, customer power facilitates collaboration, and both the supplier firm and its major customers obtain benefits. Under the competition hypothesis, customer power results in rent extraction, and the major customers benefit at the expense of the supplier firm. We document that major customer concentration is negatively associated with the supplier firm’s profitability but positively associated with the major customers’ profitability. We demonstrate that these effects weaken as the supplier firm’s own power grows over its relationship with major customers, supporting the competition hypothesis. We carefully reconcile our results with prior studies’ findings that focus only on the supplier firm’s profitability and identify their research design and interpretation problems. We obtain similar inferences in a setting of major customers’ horizontal mergers and when we use an alternative measure of major customer power.