Abstract Since the open of domestic financial market recent years, the financial products have become more and more various. In six years, there has been 2.7 funds issued every month on average. For investors, how to choose a good fund company and an appropriate fund from plenty of new offered funds is uneasy. Particularly new offered fund has no history data to examine the performance, and also lacks the regular benchmarks like £]and Sharp ratio. This thesis uses the data of the domestic stock funds which were offered over 1 year from 1997 January 1 to 2006 December 31.The data resources is from TEJ. The study will distinguish all data from whether the prospectuses regulate the funds¡¦ stock holding percentage over 70 ¢H or not. Then we want to investigate the behavior in the first year and to discuss if the fund managers¡¦ experiment will result in the abnormal performance. The study results shows that the stock holding percentage of the domestic stock funds have been over 70¢H on average since offered 3 months, but the percentage of the funds with free investment period of 3 months is less than 60¢H. However the percentage of the funds with free investment period of 6 months would rise to be 70¢H early in the second or third month. We try to use a statistic way and set a dummy variable to test whether there is different between the performance of the funds with free period and those with limited period. The result shows that there is no fund performance difference between these two period. From the second month after the fund is offered, turnover rare is close or even over the average of one year. The average level is about 30¢H and it shows the domestic stock funds have changed stocks frequently since it is offered . The tenure of Fund managers¡¦ after domestic stock funds raised is 20 months on average from 95 months to 1 month.13¢Mof fund managers will be taken place less than half year after the fund offered, 39¢Mwill be less than 1 year. 60¢Mof the fund managers have ever managed other funds before the newly one which he manage now, but 40¢Mhave no such experiment. The statistics shows that there is no significant different between fund managers¡¦ experiment and fund¡¦s abnormal returns.

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本文利用投信公司公佈之基金持股比例及持股內容明細，分析基金經理人的操作行為以及和股市股價指數的互動關係。研究主題有二： 　　一、群集效果的研究，從持股內容的分析來研究「基金經理人在操作基金時是否有群集行為」。 　　二、研究共同基金對國內股市的影響，探討「共同基金平均持股比例和股價指數間的因果關係及相關性」。 　　實證結果如下： 　　一、國內的基金經理人在操作時有明顯的群集行為（效果）。 　　二、台灣證券交易所股價指數和基金平均持股比例兩者間，不論是當期對當期，或是股價指數落後一週至十週的檢定，皆為顯著的正相關。 　　三、若以八個分類股價指數及對應之基金平均持股來看，塑化、機電、紡織、造紙、營建、金融股的11個檢定值皆為顯著正相關。水泥股及食品股的11個值則皆為顯著負相關。

本研究以民國86年至90年之54檔投資台灣開放式一般股票型之共同基金為研究對象，探討財務資訊與股票型基金持股間之關聯。主要實證議題包括：（一）在不同的產業之下，共同基金經理人從事持股決策所重視的財務屬性是否有差異及（二）公司之財務表現與共同基金對該公司平均持股比例之關聯性。 本研究分別針對建築、食品、塑化、紡織、電機、資訊電子及服務銷售類等七個產業，首先利用因素分析將16項財務比率萃取出數個具代表性之財務屬性，並加入股票週轉率、淨值市價比、本益比與每股股價等控制變數進行迴歸分析，以探討財務屬性與共同基金平均持股比例之關聯性。 實證結果發現，償債能力、經營能力、投資報酬、經營績效、固定資產資金之安全與效率和現金支應能力六個財務屬性最能代表建築產業之財務表現；償債能力、經營能力、應收帳款週轉率和獲利能力四個財務屬性最能代表食品產業之財務表現；償債能力、利息保障倍數、經營能力、和獲利能力四個財務屬性最能代表塑化產業之財務表現;償債能力、利息保障倍數、經營能力、獲利能力和財務結構五個財務屬性最能代表紡織產業之財務表現;償債能力、資金適足率、經營能力、獲利能力和財務結構五個財務屬性最能代表電機產業之財務表現；償債能力、經營能力和獲利能力三個財務屬性最能代表資訊電子產業之財務表現；而償債能力、經營能力、獲利能力、負債比率和固定資產資金之安全與效率五個財務屬性最能代表服務銷售產業之財務表現。各個產業所萃取出之財務屬性因素不盡相同，顯示彙總公司財務狀況及經營績效的財務屬性確有產業別之差異存在。在所探討的財務屬性構面中，償債能力、經營能力、獲利能力為各產業共同強調之財務屬性。 就基金經理人所做的持股策略來看，不論針對何種產業，償債能力、經營能力及獲利能力均是基金經理人最為重視的財務屬性指標。研究結果另外也顯示，除了服務銷售業、食品業與建築業外，其他產業之償債能力屬性表現越好，基金持股比例愈高。塑化業、紡織業、電機業、資訊電子業和服務銷售業之經營能力屬性表現愈好，基金持股比例也相對愈高。至於獲利能力屬性則在紡織業、電機業、資訊電子業和服務銷售業顯著地對基金持股比例有正面的影響。 本研究之發現顯示，不同的產業在不同的經營環境下，反映公司狀況的財務資訊會因產業別而有所不同，即使在相同的財務比率下，彙總公司財務狀況及經營結果之財務因素屬性仍有所差異，並進而影響基金經理人的持股決策，尤其是償債能力、經營能力和獲利能力，更是投資各產業時廣泛參考的基本財務屬性指標。 關鍵字：股票型基金、財務屬性、基金持股比例 / The primary object of this research is to exam the relationship between financial information of a firm and its share held by mutual funds, based on 54 mutual funds of general stock investments in Taiwan over the period of 1997 to 2001. Two major research issues are investigated in this thesis. The study first explores whether the managers of mutual funds emphasize on the same attributes abstracted from financial statements across different industries for their share-holding decisions. The study then examines the relationship between financial performance of a company and its average invested percentage by mutual funds. This thesis focuses on architecture, foods, plastic, textile, electrical machinery, information electronics, as well as service and sales industries. Based on a factor analysis approach, the thesis is able to obtain several representative dimensions of financial attributes out of 16 financial ratios. Then, the use of multiple regression models enables the study to investigate the relationship between financial attributes and average shareholding percentage of the mutual funds across industries. The empirical results indicate that financial attributes extracted are not exactly the same across industries. It implies that industry differences do exist in financial attributes that summarize the financial conditions and operating performances of companies. Among others, attributes that characterize the performance of liquidity, operating efficiency, and profitability of a firm are found important for share-holding percentage across all industries examined. The research findings show that with exceptions in the service and sales, foods, and architecture industries, liquidity has found to have a significant and positive relation with the share-holding percentage of mutual funds in all industries examined. Operating efficiency has also found to be significantly and positively associated with the share-holding percentage in the plastic, textile, electrical machinery, information electronics, as well as service and sales industries. In addition, a significant and positive relation is found between profitability and the share-holding percentage in the electrical machinery, information electronics, textile, as well as service and sales industries. The finding of this study implies that difference in financial conditions of firms may result in difference in financial attributes across industries; even the analysis is based on the same financial ratios. Further, the liquidity, operating efficiency and profitability are the most essential indicators shared by mutual funds managers in making investment decisions. Keywords: stock-type mutual fund, financial attribute, share-holding ratio