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Timing of accounting information disclosure and informed trading—An empirical study on the time gap between annual and 1st quarterly financial reports and extra abnormal trading volume
Frontiers of Business Research in China volume 3, pages 432–452 (2009)
Abstract
Considering the cost of capital, systematic risk and the probability of being monitored and punished, informed traders are most likely to conduct informed trading at the small time gap between the disclosure of annual report of year t and 1st quarter reports of year t+1 because the gap is the best and safest time for informed trading. Meanwhile, due to the high cost and risks of informed trading, traders need huge trading volumes to gain abnormal returns. Based on these characteristics of informed trading, a research sample and a control sample are found for this paper. The former refers to companies with loss annual report in year t and profit-making 1st quarter financial report in year t+1 in tandem. The latter refers to companies announced loss in the previous year and and profit-making 1st quarter financial report in year t+1 simultaneously or companies with loss annual report in the year t and loss 1st quarter financial report in year t+1 in tandem. Results confirm the existence of informed trading by measuring “extra abnormal trading volume”. Therefore, authors suggest that a good disclosure policy should not only consider the timeliness and accuracy of the financial reports, but also the overall information disclosure process to prevent potential informed trading.
摘要
考虑到资金成本、 市场的系统性风险和被监管的可能性, 内幕交易者最可能利用两个相隔时间很短的定期报告进行内幕交易。 因为这种交易模式最隐蔽, 最安全。 同时, 因承担了高成本和高风险, 内幕交易需要巨额的交易量才能获得超额收益。 利用内幕交易的这些特征, 找到了极好的研究样本(年报亏损下年首季报盈利且年报首季报先后公布的样本)和控制样本(年报亏损下年首季报盈利但年报首季报同时披露的样本或者年报亏损下年首季报仍然亏损且年报首季报先后公布的样本), 通过异常的超额交易量验证了内幕交易的存在。 研究表明, 在信息披露监管政策中, 不仅要考虑信息披露的及时性和充分性, 还应考虑信息披露过程是否为内幕交易提供了可乘之机。
References
Allen F, Douglas G (1992). Stock price manipulation. The Review of Financial Studies, (5): 503–529
Bagnoli M, Lipman B L (1996). Stock price manipulation through takeover bids. The RAND Journal of Economics, 27(1): 124–147
Ball R J, Brown P (1968). An empirical evaluation of accounting income numbers. Journal of Accounting Research, (Autumn): 159–178
Bamber L S (1987). Unexpected earnings, firm size, and trading volume around quarterly earnings announcements. The Accounting Review, 62(3): 510–532
Bamber L S, Cheon Y S (1995). Differential price and volume reactions to accounting earnings announcements. The Accounting Review, 70 (July): 417–441
Beaver W H (1968). The Information Content of Annual Earnings Announcements. Empirical Research In Accounting: Selected Studies. 1968, Supplement to Vol. 6 of Journal of Accounting Research: 67–92
Beaver W H, Clarke R, Wright W (1979). The Association between unsystematic security returns and the magnitude of earnings forecast errors. Journal of Accounting Research, 17: 316–340
Beaver W H, Lambert R, Morse D (1980). The information content of security prices. Journal of Accounting and Economics, 2: 3–28
Brown P (1970). The impact of the annual net profit report on the stock market. The Australian Accountant, 7: 277–283
Demsetz H (1992). Corporate control, insider trading and rate of return. The American Economic Review, 76(2): 313–316
Firth M (1981). The Relative information content of the release of financial results data by firms. Journal of Accounting Research, 19: 521–529
Foster G (1975). Earnings and stock prices of insurance companies. Accounting Review, 50: 686–698
Foster G (1977). Quarterly accounting data: Time-series properties and predictive-ability results. Accounting Review, 52: 1–21
Gerard B, Nanda V (1993). Trading and Manipulation around seasoned equity offerings. The Journal of Finance, 48(1): 213–245
Karpoff J (1986). A Theory of Trading Volume. Journal of Finance, 41 (December): 1069–1087
Kim O, Verrecchia R (1991). Trading volume and price reactions to public announcements. Journal of Accounting Research, 29 (Autumn): 302–321
La Porta R, Lopez-de-Silanes F, Shleifer A, Vishny R W (1997). Legal determinants of external finance. Journal of Finance, 52: 1131–1150
La Porta R, Lopez-de-Silanes F, Shleifer A, Vishny R W (1998). Law and finance. Journal of Political Economy, 52: 1113–1155
Leland H E (1992). Insider trading: Should it be prohibited? The Journal of Political Economy, 100: 859–887
Meulbroek L K (1992). An empirical analysis of illegal insider trading. The Journal of Finance, 47(5): 1661–1699
Seyhun N H (1992). Why does aggregate insider trading predict future stock return? The Quarterly Journal of Economics, 107(4): 1303–1331
Varian H (1986). Differences of opinion in financial markets. Working paper, University of Michigan
Watt R (1978). Systematic “abnormal returns” after quarterly earnings announcements. Journal of Financial Economics, 6: 127–150
陈 晓, 陈 小悦, 刘 钊 (Chen Xiao, Chen Xiaoyue, Liu Zhao) (1990). A 股盈余报告的有用性研究—来自上海、 深圳股市的实证证据经济研究 (Research on the usefulness of A-share companies’ earnings report: Evidence from Shanghai and Shenzhen stock exchanges). 经济研究, (6): 21–28
鲁 桂华, 李 志文 (Lu Guihua, Li Zhiwen) (2005). 庄的度量及其定价含义: 来自中国股市的经验证据 (Stock price manipulation and it’s price impact: Empirical evidence from Chinese stock). 中国会计与财务研究, (2): 50–111
吴 世农, 李 常青, 陈 碧华 (Wu Shinong, Li Changqing, Chen Bihua) (2001). 我国上市公司现金流量的市场反应和信息含量分析 (Market response to Chinese listed companies’ cash flow and analysis of information content). 首都经贸大学学报, (5): 5–13
薛 爽 (Xue Shuang) (2001). 预亏公告的信息含量 (Information content of pre-loss reports). 中国会计与财务研究, (3): 117–176
薛 爽 (Xue Shuang) (2005). 亏损上市公司实证研究 (An Empirical Study on Loss Firms). 上海: 复旦大学出版社
赵 宇龙 (Zhao Yulong) (1998). 会计盈余披露的信息含量—来自上海股市的经验证据 (Information content of accounting earnings disclosure: Evidence from Shanghai Stock Exchange). 经济研究, (7): 41
赵 宇龙 (Zhao Yulong) (2000). 会计盈余与股价行为. 第1 版 (Accounting earnings and share price behaviors (1st edition)). 上海: 上海三联书店
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Translated and revise from Zhongguo Kuaiji Pinglun 中国会计评论 (China Accounting Review), 2008, 6(2): 207–222
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Xue, S., Jiang, Y. Timing of accounting information disclosure and informed trading—An empirical study on the time gap between annual and 1st quarterly financial reports and extra abnormal trading volume. Front. Bus. Res. China 3, 432–452 (2009). https://doi.org/10.1007/s11782-009-0021-3
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DOI: https://doi.org/10.1007/s11782-009-0021-3