本研究旨在探討中國綜合型證券商共同基金業務對所屬研究部門盈餘預測行為之影響。本研究檢視關聯證券商研究部門對關聯共同基金所持股票是否追蹤程度較高、修正次數較多及盈餘預測較樂觀偏頗，此外，本研究檢視關聯證券商研究部門分析師盈餘預測報告對關聯共同基金調整持股比重之影響為何。
實證結果顯示，關聯研究機構對關聯共同基金所持有的股票追蹤程度較高。此外，關聯研究機構對關聯共同基金的持股提供較多次的盈餘預測修正及較樂觀的盈餘預測報告。特別地，關聯共同基金持股比重高之股票，關聯證券商研究機構的盈餘預測顯著較樂觀。另外，關聯共同基金調整持股比重之方向並未與關聯分析師盈餘預測樂觀程度有顯著關聯。

This study investigates whether research departments are motivated to cover those stocks in which the affiliated mutual funds have invested. Furthermore, this study examines whether a mutual fund’s stock holdings affect the frequency and optimism of the research produced by analysts affiliated with the mutual fund. Finally, this study examines how the optimism of earnings forecasts issued by analysts affiliated with the mutual fund affects the change of the mutual funds’ portfolio weights.
The empirical results reveal that the mutual fund affiliation affects research departments’ decisions to cover a stock. Moreover, the frequency of forecast revisions and the optimism of the earnings forecasts are significantly affected by the affiliated mutual fund’s stock holdings. We also find that the greater the affiliated mutual funds weigh a stock in their portfolios, the higher the analyst optimism. However, the optimism of earnings forecasts issued by analysts affiliated with the mutual fund does not affect the change of the mutual funds’ portfolio weights.

壹、中文部分
方軍雄，2007，我國上市公司資訊披露透明度與證券分析師盈餘預測，金融研究，第6期，第136-148頁。
石桂峰、蘇力勇與齊偉山，2007，財務分析師盈餘預測精確度決定因素的實證分析，財經研究，第33卷第5期，第62-71頁。
吳東輝與薛祖雲，2005，財務分析師營利預測的投資價值：來自深滬A股市場的證據，會計研究，第8期，第37-43頁。
岳衡與林小馳，2008，證券分析師VS統計模型：證券分析師盈餘預測的相對準確性及其決定因素，會計研究，第8期，第40-49頁。
原紅旗與黃倩茹，2007，承銷商分析師與非承銷商分析師預測評級比較研究，中國會計評論，第五卷第三期，第285-304頁。
鄭雅莉與蔡祥，2008，什麼影響了證券分析師營利預測的準確度-來自中國上市公司的經驗證據，中大管理研究，第三卷，第19-37頁。
貳、英文部分
Barth, M. E., R. Kasznik, and M. F. McNichols. 2001. Analyst coverage and intangible assets. Journal of Accounting Research 39(1): 1-34.
Clarke, J., A. Khorana, A. Patel, and P. R. Rau. 2004. The good, the bad and the ugly? Differences in analyst behavior at investment banks, brokerage and independent research firms. Working paper.
Clarke, J., A. Khorana, A. Patel, and P. R. Rau. 2007. The impact of all-star analyst job changes on their coverage choices and investment banking deal flow. Journal of Financial Economics 84: 713–737.
Clement, M. B. 1999. Analyst forecast accuracy: Do ability, resources, and portfolio complexity matter? Journal of Accounting and Economics 27: 285-303.
Cowen, A., B. Groysberg, and P. Healy. 2006. Which types of analyst firms are more optimistic? Journal of Accounting and Economics 41: 119-146.
Dugar, A., and S. Nathan. 1995. The effect of investment banking relationships on financial analysts’ earnings forecasts and investment recommendations. Contemporary Accounting Research 12(1): 131-160.
Gleason, C. A., and C. M. C. Lee. 2003. Analyst forecast revisions and market price discovery. The Accounting Review 78(1): 193-225.
Hayes, R. 1998. The impact of trading commission incentives on analysts’ stock coverage decisions and earnings forecasts. Journal of Accounting Research 36(2): 299-320.
Hong, H., and J. D. Kubik. 2003. Analyzing the analysts: career concerns and biased earnings forecasts. The Journal of Finance 58(1): 313-351.
Irvine, P., P. J. Simko, and S. Nathan. 2004. Asset management and affiliated analysts’ forecasts. Financial Analysts Journal 60: 67-78.
Jackson, A. R. 2005. Trade generation, reputation, and sell-side analysts. Journal of Finance 55:673-717.
Jacob, J., T. Z. Lys, and M. A. Neale. 1999. Expertise in forecasting performance of security analysts. Journal of Accounting and Economics 28: 51-82.
Lang, M. H., and R. J. Lundholm. 1996. Corporate disclosure policy and analyst behavior. The Accounting Review 71(4): 467-492.
Lin, H.-W., and M. F. McNichols. 1998. Underwriting relationships, analysts’ earnings forecasts and investment recommendations. Journal of Accounting and Economics 25: 101-127.
Ljungqvist, A., F. Marston, and W. J. Wilhelm. 2006. Competing for securities underwriting mandates: banking relationships and analyst recommendations. The Journal of Finance 61(1): 301-340.
Ljungqvist, A., F. Marston, L. T. Starks, K. D. Wei, and H. Yan. 2007. Conflicts of interest in sell-side research and the moderating role of institutional investors. Journal of Financial Economics 85: 420-456.
Michaely, R., and K. L. Womack. 1999. Conflict of interest and the credibility of underwriter analyst recommendations. The Review of Financial Studies 12 (1): 653-686.
Mola, S., and M. Guidolin. 2009. Affiliated mutual funds and analyst optimism. Journal of Financial Economics 93: 108-137.
Reuter, J. 2006. Are IPO allocations for sales? Evidence from mutual funds. The Journal of Finance 61(5): 2289-2324.
Ritter, J. R., and D. Zhang. 2007. Affiliated mutual funds and the allocation of initial public offerings. Journal of Financial Economics 86: 337-368.