题名

電視財經節目盤中解盤資訊、關注效果與放空活動的關聯性

并列篇名

The Study of Analyst Recommendations on the Cable Television, Attention Shock and Short Selling

DOI

10.6504/JOM.2017.34.01.03

作者

王子湄(Zi-Mei Wang)；呂侑儒(Yo-Ru Lui)；蕭朝興(Chaoshin Chiao)

关键词

分析師推薦 ； 關注效果 ； 套利限制 ； 融券賣出 ； analyst recommendation ； attention shock ； limit to arbitrage ； short selling

期刊名称

管理學報

卷期/出版年月

34卷1期（2017 / 03 / 01）

页次

55 - 84

内容语文

繁體中文
中文摘要

很多台灣投資人的訊息管道來自平面媒體的新聞報導與電視財經節目，尤其是散戶，在投資股市時大都會參酌媒體頻道中分析師的建議，因此，本文針對非凡與東森電視台的盤中解盤節目進行探討。研究發現，分析師推薦的資訊並無顯著參考價值，買進正面報導的個股無法獲得正的超常報酬，對於推薦賣出的報導投資人可反向操作，買進這些組合可獲得較佳績效。但解盤節目會形成吸引力衝擊，吸引天真的投資人積極跟進而造成股價暫時性上漲（下跌）。解盤資訊受關注程度愈高、個股本身套利限制愈大時，正面報導造成的定價錯誤幅度會愈大。另外，有些放空者會鎖定因投資人行為偏誤或市場摩擦產生定價錯誤的個股來交易，使得正面推薦內容會誘發額外的放空活動。但關注效果對散戶買賣決策的影響並非對稱，負面報導產生的吸引力衝擊對短期股價的影響較少且不影響放空活動。
英文摘要

Because the news report and analyst recommendation on media are the main sources of investing information, especially for retail investors, this paper examines the related issues about TV shows on ETTV and USTV airing during the trading hours in Taiwan. Evidence shows that calendar-time portfolios which go long the positive recommendations and go short the negative recommendations find no significantly positive alpha. Stock recommendations on TV shows constitute attention shocks to a large audience of individual traders and lead to temporary price movement. The size of the mispricing caused by positive recommendations varied considerably in the cross-section. When attention towards the recommendations is high or limits to arbitrage are great, we find much greater mispricing. There is also a positive association between positive recommendation and shorting activity. Alternatively, we observe a clear asymmetry between buy and sell recommendation. The evidence supports the view that an attention shock in the form of a sell recommendation has little effect on returns and shorting.
主题分类 社會科學 > 管理學
参考文献
  1. 張琬喻、楊弘章、陳佳吟(2014)。新聞媒體報導對公司財務績效與股價之影響。證券市場發展季刊，26(1)，113-146。
    連結：
  2. 鄭揚耀、張眾卓、易道韻(2013)。臺灣證券市場非法內線交易之融券、融資與買賣價差關聯性分析。財務金融學刊，21(4)，91-123。
    連結：
  3. Hou, K., Lin, P., & Wei, X. 2008. A tale of two anomalies: The implications of investor attention for price and earnings momentum. Working paper, Ohio State University and Princeton University.
  4. Kolasinski, A. C., Cao, B., Reed, A.V., & Dhaliwal, D. S. 2007. Bears and numbers: Investigating how short sellers exploit and affect earnings-based pricing anomalies. Working paper, University of Washington, Seattle.
  5. Chemmanur, T., & Yan, A. 2009. Advertising, attention, and stock returns. Working paper, Boston College, MA, Fordham University, NY.
  6. Efendi, J., Kinney, M., & Swanson, E. 2005. Can short sellers predict accounting restatements? Working paper, Texas A&M University, TX.
  7. Asquith, P., & Meulbroek, L. 1995. An empirical investigation of short interest. Working paper, Harvard University, Cambridge, MA.
  8. Francis, J., Venkatachalam, M., & Zhang, Y. 2005. Do short sellers convey information about changes in fundamentals or risk? Working paper, Duke University, North Carolina.
  9. Ali, A.,Hwang, L. S.,Trombley, M. A.(2000).Accruals and future stock returns: Tests of the naive investor hypothesis.Journal of Accounting, Auditing and Finance,15(2),161-181.
  10. Amihud, Y.(2002).Illiquidity and stock returns: Crosssection and time-series effects.Journal of Financial Markets,5(1),31-56.
  11. Amihud, Y.,Mendelson, H.(1986).Asset pricing and the bid-ask spread.Journal of Financial Economics,17(2),223-249.
  12. Baker, M.,Savasoglu, S.(2002).Limited arbitrage in mergers and acquisitions.Journal of Financial Economics,64(1),91-115.
  13. Baker, M.,Wurgler, J.(2006).Investor sentiment and cross-section of stock returns.Journal of Finance,61(4),1645-1680.
  14. Baker, M.,Wurgler, J.(2007).Investor sentiment in the stock market.Journal of Economic Perspectives,21(2),129-152.
  15. Balboa, M.,Gómez-Sala, J. C.,Lopez-Espinosa, G.(2008).Does the value of recommendations depend on the level of optimism? A country-based analysis.Journal of Multinational Financial Management,18(4),405-426.
  16. Barber, B. M.,Loeffler, D.(1993).The "Dartboard" column: Second-hand information and price pressure.Journal of Financial and Quantitative Analysis,28(2),273-284.
  17. Barber, B. M.,Odean, T.(2008).All that glitters: The effect of attention and news on the buying behavior of individual and institutional investors.Review of Financial Studies,21(2),785-818.
  18. Barberis, N.,Shleifer, A.,Vishny, R.(1998).A model of investor sentiment.Journal of Financial Economics,49(3),307-343.
  19. Bhushan, R.(1989).Firm characteristics and analyst following.Journal of Accounting and Economics,11(2-3),255-274.
  20. Boehmer, E.,Jones, C. M.,Zhang, X.(2008).Which shorts are informed?.Journal of Finance,63(2),491-527.
  21. Brixner, J. W.,Walter, A.(2007).Stock prices and the dissemination of second-hand information-new evidence from Germany.Applied Economics Letters,14(2),91-94.
  22. Busse, J. A.,Green, T. C.(2002).Market efficiency in real time.Journal of Financial Economics,65(3),415-437.
  23. Carhart, M. M.(1997).On persistence in mutual fund performance.Journal of Finance,52(1),57-82.
  24. Chou, P. H.,Chou, R. K.,Ko, K. C.,Chao, C. Y.(2013).What affects the cool-off duration under price limits?.Pacific-Basin Financial Journal,24,256-278.
  25. Christophe, S. E.,Ferri, M. G.(2004).Evidence on the market's underestimation of foreign earnings persistence.Journal of Investing,13(1),72-78.
  26. De Bondt, W. F. M.,Thaler, R.(1985).Does the stock market overreact?.Journal of Finance,40(3),793-805.
  27. De Long, J. B.,Shleifer, A.,Summers, L. H.,Waldmann, R. J.(1990).Noise trader risk in financial markets.Journal of Political Economy,98(4),703-738.
  28. Desai, H.,Krishnamurthy, S.,Venkataramaran, K.(2006).Do short sellers target firms with poor earnings quality? Evidence from earnings restatements.Review of Accounting Studies,11(1),71-90.
  29. Desai, H.,Ramesh, K.,Thiagarajan, S. R.,Balachandran, B.(2002).An investigation of the informational role of short interest in the Nasdaq market.Journal of Finance,57(5),2263-2287.
  30. Diether, K. B.,Lee, K. H.,Werner, I. M.(2009).Short-selling strategies and return predictability.Review of Financial Studies,22(2),575-607.
  31. Engelberg, J.,Parsons, C.(2011).The causal impact of media in financial markets.Journal of Finance,66(1),67-97.
  32. Engelberg, J.,Sasseville, C.,Williams, J.(2012).Market madness? The case of mad money.Journal of Management Science,58(2),351-364.
  33. Gervais, S.,Kaniel, R.,Mingelgrin, D. H.(2001).The high-volume return premium.Journal of Finance,56(3),877-919.
  34. Gompers, P. A.,Metrick, A.(2001).Institutional investors and equity prices.Quarterly Journal of Economics,116(1),229-259.
  35. Grossman, S. J.,Miller, M. H.(1988).Liquidity and market structure.Journal of Finance,43(3),617-633.
  36. Harford, J.,Kaul, A.(2005).Correlated order flow: Pervasiveness, sources, and pricing effects.Journal of Financial and Quantitative Analysis,40(1),29-55.
  37. Harrison, J. M.,Kreps, D. M.(1978).Speculative investor behavior in a stock market with heterogeneous expectations.The Quarterly Journal of Economics,92(2),323-336.
  38. Hirshleifer, D.,Lim, S. S.,Teoh, S. H.(2009).Driven to distraction: Extraneous events and underreaction to earnings news.Journal of Finance,64(5),2289-2325.
  39. Ho, T.,Stoll, H. R.(1981).Optimal dealer pricing under transactions and return uncertainty.Journal of Financial Economics,9(1),47-73.
  40. Hobbs, J.,Keasler, T. R.,McNeil, C. R.(2012).Short selling behavior and mad money.The Financial Review,47(1),65-89.
  41. Hong, H.,Lim, T.,Stein, J. C.(2000).Bad news travels slowly: Size, analyst coverage, and the profitability of momentum strategies.Journal of Finance,55(1),265-295.
  42. Hong, H.,Stein, J. C.(2003).Differences of opinion, short sales constraints, and market crashes.Review of Financial Studies,16(2),487-525.
  43. Huberman, G.,Regev, T.(2001).Contagious speculation and a cure for cancer: A nonevent that made stock prices soar.Journal of Finance,56(1),387-396.
  44. Jegadeesh, N.,Kim, W.(2006).Value of analyst recommendations: International evidence.Journal of Financial Markets,9(3),274-309.
  45. Kamara, A.,Lou, X.,Sadka, R.(2008).The divergence of commonality in the cross-section of stocks.Journal of Financial Economics,89(3),444-466.
  46. Karpoff, J. M.,Lou, X.(2010).Short sellers and financial misconduct.Journal of Finance,65(5),1879-1913.
  47. Lamont, O. A.,Stein, J. C.(2004).Aggregate short interest and market valuations.American Economic Review,94(2),29-32.
  48. Lee, C. M. C.,Shleifer, A.,Thaler, R. H.(1991).Investor sentiment and the closed-end fund puzzle.Journal of Finance,46(1),75-109.
  49. Liu, P.,Smith, S. D.,Syed, A. A.(1990).Stock price reactions to the wall street journal's securities recommendations.Journal of Financial and Quantitative Analysis,25(3),399-410.
  50. Mashruwala, C.,Rajgopal, S.,Shevlin, T.(2006).Why is the accrual anomaly not arbitraged away?.Journal of Accounting and Economics,42(1-2),3-33.
  51. Mendenhall, R. R.(2004).Arbitrage risk and post-earningsannouncement drift.The Journal of Business,77(4),875-894.
  52. Miller, E. M.(1977).Risk, uncertainty, and divergence of opinion.Journal of Finance,32(4),1151-1168.
  53. Mitchell, M.,Pulvino, T.,Stafford, E.(2004).Price pressure around mergers.Journal of Finance,59(1),31-63.
  54. Pontiff, J.(1996).Costly arbitrage: Evidence from closed-end funds.Quarterly Journal of Economics,111(4),1135-1151.
  55. Scheinkman, J. A.,Xiong, W.(2003).Overconfidence and speculative bubbles.Journal of Political Economy,111(6),1183-1220.
  56. Scheufele, B.,Haas, A.,Brosius, H. B.(2011).Mirror or molder? A study of media coverage, stock prices, and trading volumes in Germany.Journal of Communication,61(1),48-70.
  57. Shleifer, A.,Vishny, R. W.(1997).The limits of arbitrage.Journal of Finance,52(1),35-55.
  58. Tetlock, P. C.(2007).Giving content to investor sentiment: The role of media in the stock market.Journal of Finance,62(3),1139-1168.
  59. Womack, K. L.(1996).Do brokerage analysts' recommendations have investment value?.Journal of Finance,51(1),137-167.
  60. 吳佩真(2004)。國立臺灣大學財務金融學研究所。
  61. 吳宜蓉(2015)。國立交通大學財務金融研究所。
  62. 沈政維(2008)。國立暨南國際大學財務金融研究所。
  63. 林文勝(2015)。世新大學財務金融學研究所。
  64. 林宗宜(2006)。國立臺北大學經濟研究所。
  65. 林東穎(2013)。國立東華大學財務管理研究所。
  66. 林股平(2012)。開南大學財務金融研究所。
  67. 林鈺宸(2013)。逢甲大學財務金融研究所。
  68. 拾已寰(1991)。台灣股票市場機構投資人與小額投資人投資策略差異性之研究。證券市場發展季刊，12，65-90。
  69. 胡睿涵(2006)。國立臺灣藝術大學應用媒體藝術研究所。
  70. 范士瑜(2009)。國立高雄第一科技大學財務管理研究所。
  71. 徐靖志(1999)。專家選股意見對股價的影響。淡江人文社會學刊，4，39-64。
  72. 張伊婷(2011)。國立高雄第一科技大學金融研究所。
  73. 許恬欣(2007)。國立政治大學傳播學院碩士在職專班。
  74. 陳曉芬(2005)。國立高雄第一科技大學金融研究所。
  75. 湯智勝(2006)。國立政治大學會計研究所。
  76. 黃致遠(2010)。國立中山大學財務管理研究所。
  77. 廖國翔(2001)。國立政治大學財務管理研究所。
  78. 歐乃菱(2004)。國立中山大學財務管理研究所。
  79. 簡妃瑾(2006)。輔仁大學管理學研究所。
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