首次公开募股(IPO)市场表现及破发影响——基于港市中资股的经验证据

以在港上市中资股2013—2019年的数据为研究样本,首先,基于典型事件分析中资股在境外资本市场的整体表现;然后,采用多元回归模型实证检验破发、市场状况及投资者态度等因素对中资股市场表现的影响。研究结果表明：相较于恒生指数,港市中资股IPO上市后两年内的整体市场表现处于劣势;IPO破发不利于后期市场的表现,破发股的整体市场表现差于非破发股;投资者行为是市场表现的重要影响因素之一,投资者意见分歧会对中资股的市场表现产生正向影响;新股上市前的市场环境越好,中资股IPO上市后的市场表现会越好。     

The financial and operating performance of China's newly listed H-firms

This study compares pre- and post-listing financial and operating performance for a complete sample of H-firms that are incorporated in Mainland China and listed in Hong Kong between 1993 and 2000. Theoretically, there are two major opposing influences on the performance change of these newly listed firms: negative initial public offering (IPO) effect and positive privatization effect. Our major findings are: (1) the IPO effect dominates the privatization effect, so that the H-firms experienced a significant decrease in profitability and operating efficiency after listing, and (2) the performance of a control sample of newly listed private firms declined more than that of the H-firms, probably because the positive privatization effect somewhat offset the negative IPO effect for the H-firms. This paper is the first to document the positive effect of privatization in oversea listed Chinese companies.     

Do zero-cost portfolios have the ability to predict economic growth? Evidence from Hong Kong, South Korea and Taiwan

In this paper we investigate the relationship between growth in future Gross Domestic Product (GDP) and Industrial Production (IDP) and the performance of SMB (small stocks minus big stocks) and HML (High book-to-market stocks minus low book-to-market stocks) portfolios for equities listed in Hong Kong, South Korea and Taiwan.We find evidence to suggest that: (a) the excess market return is positively related to future GDP or IDP growth in South Korea and Taiwan; (b) contrary to most European markets, Australia, Japan and the US, future economic growth is in general significantly negatively related to SMB in Hong Kong and South Korea; and, (c) a negative relationship between future economic growth and HML for Hong Kong. Our results cast doubt if SMB and HML portfolios are positive risk factors in the Fama and French (Fama, E. F., and French, K. R. (1993). Common risk factors in the returns on stocks and bonds. Journal of Financial Economics, 33, 3-56) three-factor asset pricing model for Hong Kong, South Korea and Taiwan.     

Stock return volatility,operating performance and stock returns: International evidence on drivers of the ‘low volatility’ anomaly

This study highlights the link between stock return volatility, operating performance, and stock returns. Prior studies suggest that there is a ‘low volatility’ anomaly, where firms with a low stock return volatility out-perform firms with a high stock return volatility. This paper confirms that low volatility stocks earn higher returns than high volatility stocks in emerging markets and developed markets outside of North America. We also show that low volatility stocks have higher operating returns and this might explain why low volatility stocks earn higher stock returns. These results provide a partial explanation for the ‘low volatility effect’ that is independent from the existence of market anomalies or per se inefficiencies that might otherwise drive a low volatility effect. We emphasize the importance of controlling for stock return volatility when analyzing operating performance and stock performance.     

Changing conditions in the Hong Kong new issues market

This paper examines the Hong Kong IPO market from August 1995 to July 1999 and finds that the time of the June 30 1997 political handover coincides with the transition in the IPO market from ‘hot’ to ‘cold’. Although the handover was an anticipated event, an explanation for the change in market is that the political handover created uncertainty among investors; a type of information asymmetry where all investors faced greater uncertainty. Our finding provides empirical support to literature which proposes that events in the months preceding the October 27 1997 correction in Asian stock markets facilitated a decline in confidence in financial markets, subsequently characterised as the ‘Asia Financial Crisis’. In addition, we find initial returns of newly listed stocks in the Hong Kong market are associated with market condition but not associated with any particular industry (i.e., PROPERTY) or geographic location (i.e., ‘H’ SHARES) suggesting that the prevailing market condition was spread more generally across issues.     

IPOs,trade sales and liquidations: Modelling venture capital exits using survival analysis

This paper examines the dynamics of exit options for US venture capital funds. Using a sample of more than 20,000 investment rounds, we analyze the time to ‘IPO’, ‘trade sale’ and ‘liquidation’ for 6000 VC-backed firms. We model these exit times using competing risks models, which allow for a joint analysis of exit type and exit timing. The hazard rate for IPOs are clearly non-monotonic with respect to time. As time flows, VC-backed firms first exhibit an increased likelihood of exiting to an IPO. However, after having reached a plateau, non-exited investments have fewer possibilities of IPO exits as time increases. This sharply contrasts with trade sale exits, where the hazard rate is less time-varying. We further provide evidence on the impact of economic factors such as syndicate size and composition, geographical location and VC value adding, on exit outcomes.     

Overseas listing as a policy tool: Evidence from China’s H-shares

We investigate why the Chinese government chooses to perform share issue privatization (SIP) of its state-owned enterprises (SOEs) in Hong Kong, despite the benefit of facilitating the domestic stock market development if performing SIP in China (Subrahmanyam and Titman, 1999) and the higher cost to list in Hong Kong. We address this issue by arguing that the positive effect of SIPs on the development of the domestic market may have limitations, especially when the domestic market is not well developed and cannot absorb rapid and large-scale SIP activities. To maintain domestic market order, it may be optimal to carry out SIP in overseas markets. Furthermore, by listing shares in developed overseas markets, SOEs from the less developed countries could leverage on the overseas markets’ better accounting, governance, and legal standards. By examining a sample of 92 Chinese firms listed in Hong Kong and the relevant control samples of purely domestically listed Chinese firms during the period of 1993–2006, we find supporting evidence for both arguments.     

Underpricing of homecoming A-share IPOs by Chinese firms already listed abroad

Many Chinese firms have pursued overseas listings in Hong Kong or US without being first listed in China’s domestic market, mainly due to the regulatory constraints imposed by the Chinese government. Some of them eventually returned to mainland China through an A-share offering to Chinese investors. This unique feature of cross-listed Chinese stocks offers an experiment field to test some of the conventional theories of initial public offerings (IPOs) underpricing. Homebound IPOs are expected to be less underpriced than domestic only IPOs that are not cross-listed because being already listed in a developed market can mitigate the information asymmetry and issue uncertainty associated with their A-share IPOs. Nevertheless, we find that homecoming A-share IPOs are still substantially underpriced, with an average market adjusted first-day return of 96.53 %. Furthermore, their first-day returns are not significantly different from those of domestic only IPOs once firm- and offer-characteristics are controlled. This is in sharp contrast to the lukewarm aftermarket performance experienced in their overseas debuts. The mean market adjusted first-day return is merely 5.35 % in their US ADR offerings and 11.63 % in their Hong Kong H-share IPOs. Overall, our results suggest the importance of local market structures and norms as influential factors of IPO underpricing.     

Price and trading volume reaction: the case of Hong Kong companies’ earnings announcements

In this paper, we investigate the price changes and trading volume reactions during the days surrounding the announcements of annual earnings based on a 31-day observation window for a sample of Hong Kong firms listed on the Stock Exchange of Hong Kong (SEHK). The major findings of our study: (1) materially support the findings of Morse (1981), (2) demonstrate significant price and volume reactions over four days surrounding the annual earnings announcement over the years 1992 to 1995, (3) show similar market reaction for Blue Chip stocks compared to Non–Blue Chip stocks, and (4) indicate a larger overall price reaction for Non–Blue Chip stocks and mixed results regarding volume reaction when comparing the Blue Chip and Non–Blue Chip stocks. These results show that, although the Hong Kong results are largely in line with the U.S. and international evidence, the Blue Chip stocks are followed more and remain the mainstream stocks for Hong Kong investors.     

Information Flows across Markets: Evidence from China–Backed Stocks Dual–Listed in Hong Kong and New York

Using a bivariate generalized autoregressive conditional heteroskedasticity (GARCH) model, we examine patterns of information flows for China–backed stocks that are cross–listed on exchanges in Hong Kong and New York. Results analyzing the dual–listed stocks indicate significant mutual feedback of information between domestic (Hong Kong) and offshore (New York) markets in terms of pricing and volatility. Stocks listed on the domestic market appear to play a more significant role of information transmission in the pricing process, whereas stocks listed on the offshore market play a bigger role in volatility spillover.     

The impact of shareholders and creditors rights on IPO performance: An international study

This paper examines the impact of cross-country variation in shareholders' and debt holders' rights on post-IPO performance and survival of newly listed stocks across the globe. Using a sample of 10,490 initial public offerings (IPOs) in 40 countries between 2000 and 2013, we find that post-IPO performance and survival is better in countries with stronger shareholder protection, but the impact of creditor protection is negative i.e. stronger creditor protection leads to poor post-IPO performance and survival. This effect is driven by rules requiring creditors’ consent for company reorganization and the mandatory replacement of incumbent managers. Reputable IPO advisors exacerbate the positive impact of shareholder rights and the negative impact of creditor rights.     

香港市场基石投资者制度的实践与借鉴

基石投资者是香港IP O市场引导合理定价、提高发行效率的一项重要制度安排。本文对2013―2019年港股I P O进行实证分析,发现引入基石投资者可以提高IPO定价效率,帮助体量较大或估值较难的企业顺利上市,在低迷行情中起到市场稳定器的作用,但同时也存在个股流动性不足、利益输送等风险隐患。考虑到国内外形势复杂严峻,市场不确定性增强,注册制改革加速推进,新股稀缺性优势减弱,有必要借鉴香港基石投资者制度经验,进一步优化A股现行战略配售制度,合理稳定市场预期。同时,建议加强对参与战略配售投资者的信息获得、持股限售期以及信息披露等方面的监管力度。     

Tunneling as an incentive for earnings management during the IPO process in China

Using a sample of 185 Chinese IPO firms listed on the Shanghai Stock Exchange during the period 1999–2001, we show that related-party (RP) sales of goods and services could be used opportunistically to manage earnings upwards in the pre-IPO period. We also provide evidence that such behavior may be motivated by the prospect of tunneling opportunities in the post-IPO period, i.e., exploiting economic resources from minority shareholders for the benefit of the parent company. We provide evidence of one such opportunistic tunneling tool: non-repayment by Chinese parent companies of net outstanding corporate loans made to them by their newly listed subsidiaries. Furthermore, we provide evidence in support of our assertion of an association between such tunneling behavior in the post-IPO period and earnings management via abnormal RP sales in the pre-IPO period. Finally, we demonstrate the apparent failure of investors in Chinese IPOs to perceive the link between the two phenomena. The results enhance understanding of the motives for and consequences of earnings manipulation during the IPO process. They highlight a potential additional investment risk facing foreign investors in China’s capital markets as well as in Chinese firms cross-listed in non-Chinese stock exchanges, and have policy implications for China and other emerging markets which need to improve the protection of minority shareholders’ rights.     

Long-run stock performance of German initial public offerings and seasoned equity issues

We estimate the long-run stock performance after initial public offerings (IPOs) in the German capital market with a larger sample than prior studies and alternative benchmarks (the equally and the value-weighted market portfolio, size portfolios and matching stocks). In addition we present the first results on the long-run performance after seasoned equity issues (SEOs) in Germany. We conclude that size portfolios and matching stocks are better benchmarks than market portfolios. Using buy‐and-hold abnormal returns, we estimate that German stocks involved in an IPO or in a SEO, on average, underperform a portfolio consisting of stocks with a similar market capitalization by 6% in three years. This is considerably less than the underperformance after IPOs and SEOs in the US market reported by Loughran and Ritter (1995) and the underperformance after IPOs in Germany reported by Ljungqvist (1997). We also show that the apparent underperformance of the 1988–1990 IPO cohort discussed by Ljungqvist (1997) disappears when the abnormal performance estimate is based on size instead of market portfolios.     

How cross-listings from an emerging economy affect the host market?

We study the impact of mainland Chinese listings in Hong Kong on the quality and development of the Hong Kong equity market. At the macro-level, we find that the increasing presence of mainland Chinese stocks in Hong Kong increases the size, trading volume, and its link with the China and world markets but reduces the overall volatility of the Hong Kong stock market. At the firm level, the increase affects the market quality, resulting in lower turnover rate, higher Amihud illiquidity ratio, and higher spread for non-mainland Chinese firms. Furthermore, such an increase in presence causes Hong Kong stocks to move in a more synchronized way and reduces these firms investment sensitivity to stock price movement, implying deterioration in the information environment. As a whole, the increasing presence of Chinese companies in Hong Kong brings benefits to the Hong Kong market, yet not without cost.     

Buy high,sell low: How listed firms price asset transfers in related party transactions

We examine a sample of 254 related party and arms’ length acquisitions and sales of assets in Hong Kong during 1998–2000. Our analysis shows that publicly listed firms enter deals with related parties at unfavourable prices compared to similar arms’ length deals. Firms acquire assets from related parties by paying a higher price compared to similar arms’ length deals. In contrast, when they sell assets to related parties, they receive a lower price than in similar arms’ length deals. With the exception of audit committees, corporate governance characteristics have limited impact on transaction prices. Firms with audit committees on their boards pay lower prices to related parties for acquisitions and receive higher prices from related parties from divestments.     

A productivity analysis of Central and Eastern European banking taking into account risk decomposition and environmental variables

This paper develops a Luenberger productivity index that is applied to a technology where desirable and undesirable outputs are jointly produced and are possibly negative. The components of this Luenberger productivity index - the efficiency change and the components of the technological shift - are then decomposed into factors determined by the technology, adjusted and then for ‘risk and environment’, ‘risk management’ and ‘environmental effects’. The method is applied to Central and Eastern European banks operating during 1998-2003 utilising three alternative input/output methodologies (intermediation, production and profit/revenue). Additionally, the comparative analysis of the sensitivity of the productivity indices in the choice of the methodologies is undertaken using statistical and kernel density tests. It is found that the main driver of productivity change in Central and Eastern European banks is technological improvement. That is, in the beginning of the analysed period, the results hinged on the banks ability to capitalise on advanced technology and successfully take into account ‘risk and environmental’ factors. Whereas, in later periods, one of the most important factors of technological improvement/decline was ‘risk management’. Finally, the tests employed confirm previous findings, such as Pasiouras (2008)in this journal, that different input/output methodologies produce statistically different productivity results. Finally, we find that external factors, such as ‘risk in the economy’ and banking production, and a ‘corruption perception’ affect the productivity of banks.     

Free Float And Market Liquidity: A Study Of Hong Kong Government Intervention

The August 1998 Hong Kong government intervention in the stock market offers a natural experiment for studying the relation between a free float and market liquidity, where a free float is the portion of listed share capital that is freely traded on the market. Our findings show that, relative to a group of control stocks, there was an increase in the price effects of trades for the 33 Hang Seng Index component stocks that were bought by the government. On the other hand, there was no clear cross‐sectional relation between the change in the price effect and the magnitude of government holdings or the decrease in the free float.     

Long‐term Performance of Greek IPOs

We analyse the long‐run performance of 254 Greek IPOs that were listed during the period 1994–2002, computing buy‐and‐hold abnormal returns (BHAR) and cumulative abnormal returns (CAR) over 36 months of secondary market performance. The empirical results differ from international evidence and reveal long‐term overperformance that continues for a substantial interval after listing. Measuring these returns in calendar time, we find statistical significance with several of the benchmarks employed. We also find that long‐term overperformance is a feature of the mass of IPOs conducted during a pronounced IPO wave. Cross‐sectional regressions of long‐run performance disclose several significant factors. The study demonstrates that although Greek IPOs overperform the market for a longer period, underperformance eventually emerges, in line with much international evidence. Our interpretation is that the persistence of overperformance over a significant interval is due to excessive supply of issues during the ‘hot IPO period’. Results associated with pricing during the ‘hot IPO period’ indicate positive short‐ (1‐year), medium‐ (2‐year) and negative long‐term (3‐year) performance.     

The Impact on IPO Performance of More Stringent Listing Rules with a Pre-listing Earnings Requirement: Evidence from Hong Kong

Abstract:  This study considers the impact of a change to listing rules covering IPO performance in the Hong Kong stock market. The change, introduced in 1994, imposed a three-year prelisting earning requirement on new issues. The objective of this research is to screen out a subset of poor IPO performers. We find there is no significant difference in performance between IPOs before and after the regulatory change. We further divide our sample of IPOs registered before the regulatory change into two sub-samples: those that did and those that did not fulfil the earnings requirement. The result shows that there is no significant difference in performance between the two IPO sub-samples. This implies that the existence of pre-listing earnings does not guarantee good long-term IPO performance and the pre-listing earnings of new issues is not an effective screen for 'bad' IPO performers. This study further analyses the rationale for rule change in the context of recent developments in the Hong Kong stock market and concludes that the rule change is part of the reform programme aimed at introducing a second board market for small companies and at attracting more China-related listings to the main board.