New evidence on the price and liquidity effects of the FTSE 100 index revisions

We study the price and liquidity effects following the FTSE 100 index revisions. We employ the standard GARCH(1,1) model to allow the residual variance of the single index model (SIM) to vary systematically over time and use a Kalman filter approach to model SIM coefficients as a random walk process. We show that the observed price effect depends on the abnormal return estimation methods. Specifically, the OLS-based abnormal returns indicate that the price effect associated with the index revision is temporary, whereas both SIM with random coefficients and GARCH(1,1) model suggest that both additions and deletions experience permanent price change. Added (removed) stocks exhibit permanent (temporary) change in trading volume and bid-ask spread. The analysis of the spread components suggests that the permanent change associated with additions is a result of non-information-related liquidity. We interpret the permanent price effect of additions and deletions combined with the permanent (temporary) shift in liquidity of added (removed) stocks as evidence in favour of the imperfect substitution hypothesis with some non-information-related liquidity effects in the case of additions.     

Gaming the FTSE 100 index

In the UK (unlike the US and many other countries), companies enter and exit the main stock market index (FTSE 100) according to a clear set of rules based on market capitalisation. This creates an opportunity to game the system to secure or retain FTSE membership by manipulating capitalisation. There is considerable evidence in extant studies that index membership is beneficial, both for shareholders and managers. Hence, companies may adopt financial strategies designed to acquire or retain membership. We investigate two types of gaming. We define strategic gaming as a situation in which companies, which may initially be a number of places away from the boundary, make abnormal share issues cumulatively over several quarters. We find strong supportive evidence for this. For tactical gaming, which would involve companies in the very closest proximity to the boundary, we do not. Our analysis shows that gaming is limited to companies outside the index trying to get in. Companies that are close to exit do not game to retain their index place. The high natural volatility of market capitalisation makes success of gaming uncertain. Our central estimate is that about 5% of entries to the index appear to be the result of gaming.     

Information costs and liquidity effects from changes in the FTSE 100 list

Abstract

In this paper we examine the stock price effect of changes in the composition of the FTSE 100 over the time period of 1984–2001. Like the S&P 500 listing studies, we find that the price and trading volume of newly listed firms increases. The evidence is consistent with the information cost/liquidity explanation. This is because investors hold stocks with more available information, implying that they have lower trading costs. This explains the increase in the stock price and trading volume of newly listed stocks to the FTSE 100 List. We find the reverse effect for the deletions from the FTSE 100.     

Stock liquidity and enterprise innovation: new evidence from China

We employ data of 6194 firm-year observations for 1058 listed companies in the period 2006–2013 to investigate the interaction between stock liquidity and enterprise innovation in China and confirm that an increase in stock liquidity raises the number of patents granted, R&D investment, and the innovation efficiency of state-owned enterprises, while it decreases innovation significantly in private firms. These findings are also supported by quasi-natural experiments under the split-share structure policy reform and the adjustment of the stamp duty rate using propensity score matching and difference-in-difference methods. We then identify two possible mechanisms through which liquidity increases innovation: the entry of long-term and strategic institutional investors and the gradual privatization of SOEs. Several policy implications are provided in accordance with our findings.     

Anticipatory effects in the FTSE 100 index revisions

This paper examines the price impact of trading due to expected changes in the FTSE 100 index composition, which employs publicly-known objective criteria to determine membership. Hence, it provides a natural context to investigate anticipatory trading effects. We propose a panel-regression event study that backs out these anticipatory effects by looking at the price impact of the ex-ante probability of changing index membership status. Our findings reveal that anticipative trading explains about 40% and 23% of the cumulative abnormal returns of additions and deletions, respectively. The results are both statistically and economically significant.     

Asymmetric stock price and liquidity responses to changes in the FTSE SmallCap index

We examine market reactions to changes in the FTSE SmallCap index membership, which are determined quarterly based on market capitalization and are free of information effects. Our main results are asymmetric price and liquidity responses between the firms that are shifted between FTSE indexes and the firms that are new to FTSE indexes. Firms promoted from a smaller-cap to a larger-cap FTSE index experience a permanent increase in stock price accompanied by improvements in liquidity. Similarly, firms demoted from a larger-cap to a smaller-cap FTSE index experience a permanent decrease in stock price accompanied by declines in liquidity. In contrast, firms added to the FTSE SmallCap index that were not previously in FTSE indexes show a transitory price gain and declines in liquidity. The results support the liquidity and price pressure hypotheses.     

Ex Ante Hedging Effectiveness of UK Stock Index Futures Contracts: Evidence for the FTSE 100 and FTSE Mid 250 Contracts

Ex ante hedging effectiveness of the FTSE 100 and FTSE Mid 250 index futures contracts is examined for a range of portfolios, consisting of stock market indexes and professionally managed portfolios (investment trust companies). Previous studies which focused on ex post hedging performance using spot portfolios that mirror market indexes are shown to overstate the risk reduction potential of index futures. Although ex ante hedge ratios are found to be characterised by intertemporal instability, ex ante hedging performance of direct hedges and cross hedges approaches that of the ex post benchmark when hedge ratios are estimated using a sufficient window size.     

Commonality in liquidity: Evidence from the Australian Stock Exchange

Several studies have reported strong evidence of commonality in liquidity in US markets. The present study uses the research design of Chordia et al. (2000) to examine commonality in liquidity for a broad sample of stocks listed on the Australian Stock Exchange (ASX). In contrast to previous research, there is some evidence of market‐wide commonality in liquidity for ASX stocks, but it is less significant and less pervasive than that observed in other markets. These results are consistent with explanations based on differences in market structure between the USA and Australia.     

Stock price synchronicity and liquidity

We argue and provide evidence that stock price synchronicity affects stock liquidity. Under the relative synchronicity hypothesis, higher return co-movement (i.e., higher systematic volatility relative to total volatility) improves liquidity. Under the absolute synchronicity hypothesis, stocks with higher systematic volatility or beta are more liquid. Our results support both hypotheses. We find all three illiquidity measures (effective proportional bid-ask spread, price impact measure, and Amihud's illiquidity measure) are negatively related to stock return co-movement and systematic volatility. Our analysis also shows that larger industry-wide component in returns improves liquidity. We find that improvement in liquidity following additions to the S&P 500 Index is related to the stock's increase in return co-movement.     

Stock liquidity and managerial short-termism

We examine whether stock liquidity exacerbates or mitigates managerial short-termism. Utilizing earnings management as a proxy for managerial short-termism, we establish three major findings. First, firms with liquid stocks engage in less accrual-based and real earnings management. Second, the effect of stock liquidity on earnings management is amplified for firms with high levels of managerial pay-for-performance sensitivity. Third, the positive association between the intensity of earnings management and firm cost of capital is evident only for firms with low stock liquidity. Our findings are consistent with the threat of blockholder exit as the main governance channel through which stock liquidity discourages opportunistic earnings management and mitigates managerial short-termism.     

Stock liquidity and director compensation

This study investigates how stock liquidity affects the compensation incentives faced by the directors on the board. The results show that the proportion of cash-based compensation in the directors' compensation package increases when the firm's shares are less liquid: a one standard deviation increase in the bid-ask spread from the mean is associated with a 3% larger fraction of cash in the directors' compensation package. The effect is more pronounced for firms whose management does not issue Earnings Per Share (EPS) guidance and for firms whose Chief Executive Officers (CEOs) themselves have higher pay in cash and lower pay in the form of equity. These results suggest the compensation incentives offered to directors in firms with illiquid shares result in the interests of shareholders being less aligned with those of the directors compared with firms with liquid shares.     

Stock liquidity and dividend policy: Evidence from an imputation tax environment

This paper investigates the impact of stock market liquidity on firms' dividend payout policy in the Australian market. The finding suggests that stock liquidity positively relates to firm dividend payouts. The result holds after controlling for different model estimations and different measures of stock liquidity/dividend. To address endogeneity issue, I use the removal of broker identities by the ASX in 2005 as an exogenous shock to stock liquidity. The result suggests that there is an increase in stock liquidity around this shock, leading to an increase in firm dividend, suggesting a causal effect of stock liquidity on firm dividend. I further document that stock liquidity enhances firm dividend through reducing cash-flow volatility and the effect of stock liquidity on firm dividend is weaker for firms reporting imputation tax credit.     

Asset liquidity and venture capital investment

We examine the relationship between asset market liquidity and venture capital (VC) investment and find that it is inverted U-shaped. Asset liquidity and VC investment are positively related for low levels of asset liquidity but negatively related for higher levels of asset liquidity. We also document evidence that VC firms with more industry experience invest more in a liquid asset market than those without industry experience or with significant experience in other industries. Portfolio companies obtained their first investment in a liquid asset market are less likely to exit successfully; however, given a successful exit, they prefer to exit through mergers and acquisitions rather than going public.     

Stock investment strategy combining earnings power index and machine learning

We propose an intermediate-term stock investment strategy based on fundamental analysis and machine learning. The approach uses predictors from the Earnings Power Index (EPI) as input variables derived from cross-sectional and time-series data from a company’s financial statements. The analytical methods of machine learning allow us to validate the link between financial factors and excess returns directly. We then select stocks for which returns are likely to increase at the time of the next disclosed financial statement. To verify the proposed approach’s usefulness, we use company data listed publicly on the Korean stock market from 2013 to 2019. We examine the profitability of trading strategy based on ten machine-learning techniques by forming long, short, and hedge portfolios with three different measures. As a result, most portfolios, including EPI-related variables, present positive returns regardless of the period. Especially, the neural network of the two layers with sigmoid function presents the best performance for the period of 3 months and 6 months, respectively. Our results show that incorporating machine learning is useful for mid-term stock investment. Further research into the possible convergence of financial statement analysis and machine-learning techniques is warranted.     

Cash flow,investment, and investment opportunities: New tests using UK panel data

The interpretation of the correlation between cash flow and investment is controversial. Some argue that it is caused by financial constraints, others by the correlation between cash flow and investment opportunities that are not properly measured by Tobin’s Q. This paper uses UK firms’ contracted capital expenditure to capture information about opportunities available only to insiders and thus not included in Q. When this variable is added to investment regressions, the explanatory power of cash flow falls for large firms, but remains unchanged for small firms. This suggests that the significance of cash flow stems from its role in capturing the effects of credit frictions.     

Commonality in liquidity: Evidence from the Stock Exchange of Thailand

This study examines commonality in liquidity of the Stock Exchange of Thailand (SET) using a limited order book data from 1996 to 2003. Strong evidence is found for market-wide commonality in liquidity, which prevails across several liquidity measurements. Industry-wide commonality is found to be stronger than market-wide commonality in liquidity. However, we do not find a market-wide correlated liquidity supply imbalance. There is evidence that indicates a fall in individual liquidity on Monday and after a day with a positive return.     

Corporate liquidity,investment and financial constraints: Implications from a multi-period model

In single period models, financially constrained firms invest more in response to increases in their net worth or interest rate cuts. We examine whether or not these results necessarily hold in a multi-period setting. We present a multi-period version of the Holmstrom and Tirole moral hazard model and show that the probability of investment (or the hurdle rate for investment) in the first period of a two-period model is non-monotonic in the level of liquid balances [Holmstrom, B., Tirole, J., 1997. Financial intermediation, loanable funds, and the real sector. Quart. J. Econ. 112 (3), 663–691. August; Holmstrom, B., Tirole, J., 1998. Private and public supply of liquidity. J. Polit. Economy 106 (1), 1–40. February; Holmstrom, B., Tirole, J., 2000. Liquidity and risk management. J. Money, Credit, Banking 32 (3), 295–319. August]. When a risk-free interest rate is introduced in the model, we show that a lower interest rate (or a downward shift or the yield curve) can lead to less current investment due to the interaction of future financial constraints and discounting of cash flows. Our results have implications for the effect of monetary policy on investment by financially constrained firms. They also address several recent empirical debates, such as the relationship between liquidity and the cash-flow sensitivity of investment, and whether or not accumulation of cash balances by Japanese firms can be consistent with the existence of financial constraints affecting investment.     

Stock liquidity and corporate tax avoidance

We show that firms with higher stock liquidity engage less in extreme (i.e., overly aggressive or overly conservative) tax avoidance. The effect of stock liquidity on tax avoidance is economically meaningful and robust across alternative measures of tax avoidance and stock liquidity. The findings also hold after controlling for potential endogenous effects. We further document that the effect of stock liquidity on tax avoidance is amplified for firms with high proportions of activist shareholders and attenuated for firms with high levels of stock price informativeness. Overall, our findings suggest that stock liquidity mitigates extreme tax avoidance by enhancing shareholders’ monitoring over firm management.

     

In Defence of Capitalisation Weights: Evidence from the FTSE 100 and S&P 500 Indices

A simple method for decomposing the variance covariance matrix of portfolio returns at the level of individual stocks is applied to the FTSE 100 Index. During extreme negative shocks, the largest index constituents exhibit lower than average covariance, thereby reducing the volatility of the capitalisation‐weighted index. The risk‐adjusted returns of the capitalisation‐weighted FTSE 100 Index exceed those of an equally‐weighted version of the same index and the outperformance is robust to the method of risk adjustment applied. The equally‐weighted index also exhibits greater systematic (market) risk than the capitalisation‐weighted version.     

Stock market liquidity and firm value

This paper investigates the relation between stock liquidity and firm performance. The study shows that firms with liquid stocks have better performance as measured by the firm market-to-book ratio. This result is robust to the inclusion of industry or firm fixed effects, a control for idiosyncratic risk, a control for endogenous liquidity using two-stage least squares, and the use of alternative measures of liquidity. To identify the causal effect of liquidity on firm performance, we study an exogenous shock to liquidity—the decimalization of stock trading—and show that the increase in liquidity around decimalization improves firm performance. The causes of liquidity's beneficial effect are investigated: Liquidity increases the information content of market prices and of performance-sensitive managerial compensation. Finally, momentum trading, analyst coverage, investor overreaction, and the effect of liquidity on discount rates or expected returns do not appear to drive the results.