The fund market has grown substantially during the past decades and the majority of Swedish citizens are invested in funds directly or through pension savings. There is mixed evidence on the performance of Swedish equity funds depending on the method employed and the time period studied. In this study, we set out to estimate abnormal performance using acknowledged methods during a time-period that is both longer and more recent than previous studies. Our sample is survivorship-free and consists of 150 mutual equity funds during January 1993 to December 2011. We use a four-factor model to estimate abnormal performance compared to an index and additional risk factors. We find that the average performance is neutral net of costs and that funds outperform with 1.7 percent before costs, the difference is approximately the average management fee. Over time, we find that the average abnormal performance and the share of funds that have significant outperformance have decreased while the share of significant underperformance has increased. Since the study of fund performance started in the 1960's the twin questions has been; does funds outperform the market and is this a result of pure chance or are managers skilled? Since we observe funds with significant positive and negative abnormal performance, we want to know if the results can attributed to luck or skill. We employ the latest technique, a bootstrap simulation, to test for skill or luck. This is the first study to employ the bootstrap to distinguish skill from luck in sample of Swedish funds. By ranking funds on performance after costs, we find that the performance of the majority of funds can be attributed to skill or "bad skill". The evidence is strongest in the top 95th percentile and above, and from the bottom 50th percentile and below.

近年基金投資已然成為一般民眾重要的理財工具之一，而投資人最關注的顯然是基金績效的好壞，以及前績效好的基金在未來能否持續先前好的績效表現。因此本論文主要探討台灣的開放式股票型基金之績效、基金績效的持續性，以及投資人買賣基金的行為與基金績效之間的相互影響。論文第一部份是從隨機變數的觀點評估台灣的開放式股票型基金其夏普指標績效值，第二部份則以一般化的馬可夫模型－「漂移者—停駐者」模型評估基金績效持續性的動態行為，第三部份討論投資人的現金流量和基金績效之間的關聯性。 在第一部份的實證結果中，我們認為過去對夏普指標高的基金其績效較佳之想法必須修正，因為從隨機變數的觀點衡量基金的夏普指標值時，所有基金的績效均不顯著異於0。若與市場指數的夏普指標相比，並非所有基金經理人都能打敗市場，雖然以五年評估期間衡量基金績效時，有半數以上的基金其績效顯著優於市場指數，但在二年評估期間下只有極少數基金的績效顯著優於市場。第三，以拔靴法模擬基金的小樣本夏普指標分配時，仍然無法找到基金績效顯著大於零的證據。整體而言，本部份的研究認為從隨機變數的觀點衡量基金的夏普指標績效時，台灣的開放式股票型基金其績效超越市場的證據並不強。 第二部份以「漂移者—停駐者」模型衡量基金績效的動態持續性之實證結果，我們發現整體基金市場具有某種程度的績效持續性，但績效持續性的強弱程度隨著績效組別的不同而有差異，表現最佳與最差兩組基金的績效持續性高於績效中等基金，但整體基金的績效持續性並不很明顯。另外，績效最差組別的停駐基金比率為各組中最高，代表該組別基金的績效持續性較強。第二，基金績效持續性因績效指標的不同而有差異，主要差異反映在各績效組別裡停駐基金比率的估計。第三，「存活偏誤」的確對基金績效持續性的結果有影響，但主要影響反應在停駐基金比率的估計，而非績效漂移基金的轉換機率。第四，以概度比檢定驗證單純馬可夫鏈模型與「漂移者—停駐者」模型對資料的配適程度時，發現「漂移者—停駐者」模型較適合分析台灣開放式股票型基金的績效持續性。 就第三部份基金績效與投資人現金流量的討論，第一，實證結果支持台灣的開放式股票型基金其績效具有持續性，但整體市場的績效持續性並不顯著，其中季資料下基金績效的持續性證據最強，此部份與論文第二部份的結論一致。第二，前一季績效佳的基金在下一季能吸引投資人較多的現金流量，但是放入市場報酬率作為解釋因子後，我們發現投資人的現金流入隨著市場報酬率的上升而提高、隨著基金報酬率的增加而減少，因此投資人買賣基金的主要考量似乎是以市場整體走勢為主，而非基金前期績效。第三，投資人買賣基金的活動對基金後續績效並無影響，這可能是基金經理人的持股比率高於法令規定，或是投資人買入贖回基金的活動對績效的影響通常在數日內即已反應完畢。最後，討論經理人的流動性交易及訊息交易對基金後續績效的影響之前，我們發現基金前期績效的持續大約維持兩個月，但是加入流動性交易及訊息交易作為解釋變數後，基金績效的持續性減弱。 / Mutual funds have been a popular investment vehicle in recent years regardless of the growth of fund assets or numbers of beneficiaries. What investors mind are that whether mutual funds can provide higher return than others, star managers can persist previous dominant performance. For the reasons, we try to examine the performance of Taiwan mutual funds by Sharpe ratio index from new insights, and study mutual fund within best performance group can maintain antecedently superior performance. Finally, we attempt to investigate the relationship between fund performance and fund flows of open-ended stock fund in Taiwan. 1. We analysis the statistical distribution of the Sharpe ratio in Taiwan Mutual Funds developed by Lo(2002) and explore fund performance. First, we construct the confidence intervals of Sharpe ratio of Taiwan stock funds under different assumption for the return-generating process is independently and identically distributed returns (IID) and Non-IID but stationary, then, annualize Monthly Sharpe ratios by Time Aggregation technique. To avoid small sampling errors, we utilize bootstrap sampling conception to simulate the small sample distribution of Sharpe ratio of stock funds. We find that (1) there are not significant evidences that mutual funds in Taiwan have superior performance than riskless rate or market returns in several conditions. (2)By Bootstrapping sampling technique, we still cannot find stock funds have comparatively better performance than market indexes from empirical result. Accordingly, we believe that the usual methods about Sharpe ratios must be modified. That is, a mutual fund with higher Sharpe ratio is not necessarily a good performance, absolutely. Cause, Sharpe ratio index is not a constant, but a random variable, and we must build up its interval estimation and then test if there are significant differences between funds performance. Consequently, we argue it is relatively important to construct the performance-ranking system of mutual funds similar the bond credit-rating. 2. We employ the mover-stayer model to study the dynamics of performance persistence of mutual funds in Taiwan. This model provides us more detailed information about and help us further understand the nature of mutual fund performance persistence. We find (1) that there exists certain degree of persistence in mutual fund performance. Such persistence is, however, not very significant. It is because most funds are mover funds with unstable performance rather than stayer funds with consistence performance. More interestingly, funds within the best and the worst performance groups have more persistent performance than those within the middle performance group. It implies that in view of the previous mediocre performance, fund managers within the middle group have strong intention to improve their future performance. In addition, the fact that the worst performance group has the highest proportion of stayer funds implies that losers are more persistent than winners in Taiwan mutual fund industry. Overall, mutual funds in Taiwan have only weak performance persistence. (2) that consistent with the literature, the degree of persistence in performance is dependent on the performance evaluation criteria. It seems that this difference of degree of persistence is reflected in the estimation of stayer fund proportion, not in the estimation of the transition probability matrix of mover funds. (3) that there exists survivorship bias in our study. It mainly influences the estimation of stayer funds proportion, not that of the transition probability matrix of mover funds. Having said that , we believe that this bias will not alter the important conclusions of this article. 3. This part studies three important issues including the performance persistence of mutual funds, the relationship between mutual fund performance and investor fund flows, and the influence of investor fund flows on the performance of mutual funds. Our analyses are based on the data of mutual funds in Taiwan with three different frequencies that include monthly, quarterly, and yearly data. The methods we utilize to perform the analyses are those from Gruber (1996) and Edelen (1999). There are three main findings in this article: (1)During the sample period from 1996 to 2004, the evidence on the performance persistence of mutual funds in Taiwan is at best weak regardless of various risk-adjusted models and data frequencies. In sum, mutual funds in Taiwan do not perform persistently no matter how their performance is measured. (2)We are not able to discover a significant relationship between mutual fund performance and investor fund flows based on monthly data. This result is not consistent with that of Gruber (1996). However, this relationship becomes stronger if we look at quarterly data. In addition, the most interesting thing is that it seems that it is the quarterly stock market return that derives most of investor fund flows rather than the quarterly mutual fund performance itself. This result implies that the key factor for investors to decide whether to invest more capital into mutual funds is the overall market performance. In other words, the market sentiment may be the most importance factor that induces investors to purchase or sell mutual funds. (3) In contrast to the results of Edelen (1999), the liquidity-trading of fund managers induced by investor fund flows does not have a significant adverse effect on fund performance. Interestingly, the contemporaneous information-trading of fund managers has significant negative impact on fund performance while that in the previous month actually improves fund performance. Furthermore, the performance persistence normally lasts for two months but it diminishes when we incorporate both the liquidity-trading and information-trading of fund managers into the regressions.

Made available in DSpace on 2010-04-20T20:51:42Z (GMT). No. of bitstreams: 3 154941.pdf.jpg: 12079 bytes, checksum: 809428fce6feb0072e770a5b74f32903 (MD5) 154941.pdf: 545730 bytes, checksum: ff5c0f2f9eb9820b7a86ba64f3d0f907 (MD5) 154941.pdf.txt: 108893 bytes, checksum: 77009802f4e69002e5a5064d61049c82 (MD5) Previous issue date: 2006-02-13T00:00:00Z / O presente trabalho estuda o efeito Smart Money, inicialmente identificado por GRUBER (1996) e ZHENG (1999), na indústria de fundos brasileira no período de 2001 a 2005. Buscou-se identificar se os fundos que apresentaram maior captação líquida em seguida performam melhor do que os fundos de menor captação líquida. O efeito Smart Money foi identificado nos fundos de ações mesmo após ter sido controlado pelo efeito momentum. Nos fundos multimercados com renda variável e nos fundos de renda fixa não foi possível identificar tal fenômeno. / This work studies the Smart Money Effect, initially identified by GRUBER (1996) and ZHENG (1999), in the brazilian mutual fund industry in the period of 2001-2005. The objective was to verify if the funds with the highest net cash flows had a better performance in the following period than the funds with the lowest net cash flows. The Smart Money Effect was identified in stock funds, even after controlling by the stock return momentum phenomenon. In mixed funds and in fixed income funds it was not possible to identify such effect.

本研究探討2001年1月至2016年12月內所有以台股市場為標的之開放式股票型基金，透過多元迴歸模型與交易策略法深入的了解資金流量與過去和未來一期報酬率之間的關聯性，並從中探討台灣投資人的行為偏好。 透過多元迴歸模型與交易策略法可以發現代表台灣投資人投資偏好的資金淨流量變動率普遍有追逐過去績效表現優異之基金的傾向，接著探討資金淨流量變動率與未來一期報酬率的關聯後發現，台灣共同基金市場上當期資金淨流量變動率越高的基金，普遍在未來短期內所獲得的報酬率有較低的現象，然而隨著未來報酬期間的拉長，此現象便逐漸消失，最主要的解釋原因為台灣共同基金投資人普遍有追逐過去績效表現優異之基金的傾向，使過去績效表現較好的基金容易湧入過多的申購資金，而這些基金雖然在過去一期該基金經理團隊可以憑藉著自己所擅長的產業與個股經驗，挑選到具有成長潛力的投資標的，但隨著過去一期的優異表現，這些基金的投資組合持股價格已經來到相對高點，難以持續擁有良好的報酬表現，加上基金經理團隊手上仍握有許多等待投資的現金，最終可能迫使基金經理團隊必須開始涉入自己不熟悉的產業與個股，增加錯誤投資的機會而使績效表現變差，然而長期而言，該基金經理團隊仍可以憑藉著自己的專業投資能力，重新尋找到優良投資標的，消化過去湧入的投資資金，改善過去短期績效表現不佳的狀況。 / This study explored all open-ended equity funds targeting Taiwan’s stock market from January 2001 to December 2016. Through multiple regression model and trading strategy method, we got an in-depth understanding of the relationship between fund flows and both past and future returns, and the characteristics of the trading behavior of Taiwan’s investors were further investigated. By using multiple regression model and trading strategy method we found evidence that Taiwan’s investors have the tendency to chase mutual funds which had superior performance in the last period. Following this issue, we also found that funds with higher fund inflow generally had lower return in the short term time horizons, but the phenomenon would gradually disappear when the time horizons were extended. The main explanation of this phenomenon is that Taiwan’s investors generally have the tendency to buy mutual funds which gave superior return in the last period, so that funds with better performance in the past are prone to attract subscription. Although in the last period, these funds’ management team could rely on their own industrial and individual stock-picking experience, selecting those stocks with high growth potential. However, with an outstanding performance in previous period, stock prices in those fund’s portfolio had come to a relatively high point, so it’s hard to maintain good performance. With a vast sum of fund inflow, the management team may also be forced to invest in the industries or companies that they’re unfamiliar with, causing the possibility of wrong investment. However, when the time horizons were extended, the management team could digest the inflow of investment funds by rediscovering good investment targets and improve their fund performance.

The growing interest in savings on the financial markets implicates that the competition is expanding and managers of Swedish equity funds need to create shareholder value, independent of the macroeconomic situation. The Swedish financial market experienced a rapid rebound during the first quarter of 2019, following the plunge in the preceding quarter. This thesis utilizes multiple linear regression to analyze Swedish equity funds during the first quarter of 2019. The aim is to identify variables affecting fund performance in a market rebound in order to formulate a performance maximizing strategy. Based on the results of the performance influencing variables, the strategy is to underweight small cap stocks, overweight the energy and technology sector, underweight the communication services sector and staying neutral to overweighted in remaining sectors. Furthermore, the strategy proposes an overweighted exposure to North American stocks and an underweight to Western European stocks. The overexposure to North America should be larger in absolute value compared to the underexposure to Western Europe. The strategy is ambiguous since data from only one market rebound is analyzed. Therefore, the strategy is not significantly proven to be adaptable in any market rebound. The model analysis is based on modern macroeconomic and financial theories. In addition, the discussion problematizes the neoclassical view on economics based on the notion that a combination of rationality and irrationality is prevalent among investors. Further research is essential either to support or reject the performance affecting variables and the allocation strategy specified in the thesis. / Det växande intresset att investera på de finansiella marknaderna implicerar att konkurrensen hårdnar bland fondförvaltare. Fondförvaltare för svenska aktiefonder måste därmed skapa andelsägarvärde, oberoende av det makroekonomiska läget. Den finansiella marknaden återhämtade sig snabbt under det första kvartalet 2019 efter den branta nedgången under det föregående kvartalet. Studien avser att identifiera de bidragande faktorerna till avkastning för svenska aktiefonder under denna återhämtning. Multipel linjär regression används för detta ändamål samt för att formulera en avkastningsmaximerande strategi. Strategin föreslår att förvaltare för svenska aktiefonder bör undervikta småbolag, övervikta aktier inom energi och teknik samt undervikta aktier i kommunikationssektorn. Strategin är vidare att vara neutral till överviktad i övriga sektorer. Dessutom är strategin att övervikta nordamerikanska aktier och att undervikta västeuropeiska aktier. Övervikten i Nordamerika ska vara större i absoluta termer än undervikten i Västeuropa. Strategin är tvetydig då den bygger på data från enbart en marknadsåterhämtning. Därmed är den framtagna strategin inte bevisad att vara applicerbar på vilken marknadsåterhämtning som helst. Analysen är baserad på modern makroekonomisk och finansiell teori. Diskussionen problematiserar den neoklassiska synen på ekonomi baserat på uppfattningen att investerare är både irrationella och rationella i sina investeringsbeslut. Fortsatt forskning är essentiell för att antingen stärka eller förkasta dragna slutsatser i denna studie.

For more than 40 years, a tremendous number of studies have empirically explored the relationship between Corporate Environmental Performance (CEP) and Corporate Financial Performance (CFP). This study considers the relationship from a new perspective—via a qualitative research approach based on expert interviews. First, practitioners are queried for their view on the link between CEP and CFP and how to measure it. Since the vast majority see a positive relationship, this study contributes with a new form of evidence that it pays to be green. The chosen qualitative approach also allows a more detailed analysis of underlying cause-and-effect mechanisms. For instance, interviewed practitioners emphasize a direct and indirect impact from CEP on CFP. Second, the study conducts interviews with experts from research and associations (non-practitioners) and compares the viewpoints of the two interview groups. One prevalent difference refers to the fact that non-practitioners do not focus on the two impact levels. Moreover, business experts perceive the link between CEP and CFP as much less complex and reveal more pragmatically oriented considerations. The study then discusses how the interview results and identified differences can be used to direct future research and to support corporations in their move towards sustainability.

台灣發行量加權股價指數在編製時並未調整現金股利的影響，不僅會低估實際的投資報酬率，以其作為標竿指標，在評估共同基金績效時，亦會產生標竿錯誤的問題。因此，本文將現金股利的再投資報酬納入，重新編製加權股價指數。實證結果發現，若自民國75年起調整現金股利之影響，則在民國89年10月31日時，股價指數由5544.18點調整為6419.83點，約增加1.16倍。以新指數重新衡量基金績效的結果，發現績效排名並無大幅度的改變，而且基金績效是否擊敗大盤的情形，受新指標的影響亦不大，此乃因近年來上市公司配息少，而且基金績效非常極端。但基於理論上的正確性，在計算投資報酬率及評估共同基金績效時，仍應以納入現金股利之加權股價指數為基礎，以降低因標竿指標錯誤所造成研究結果的偏誤，否則未來我國股票配息的情況及基金報酬率的特性若改變之後，以過去的方式評估績效將可能造成極大之偏差。 / The Taiwan Stock Exchange Market Weighted Index (TAIEX) is not adjusted for cash dividend. Since the TAIEX is commonly used for calculating the investment return of the Taiwan’s market and as the benchmark index for mutual fund performance evaluation, the investment return in Taiwan is underestimated and there is benchmark error in the evaluation of mutual fund performance. This paper adjusts the TAIEX by incorporating the effect of the reinvestment of cash dividend in the TAIEX. The beginning date of our adjustment is January 4, 1986. Since then until the end of October 2000, the adjusted TAIEX grew to 1.16 times of the unadjusted index. However, The mutual fund performance evaluated based on the adjusted index is insignificantly different from that based on the un-adjusted index. This is because mutual funds have extreme performance. Due to the small cash dividend paid out by the listed firms on the Taiwan Stock Exchange, the adjustment effect is not enough to overturn the evaluation of

Market Liquidity, Active Investment, and Markets for Information. This paper studies a financial market in which investors choose among investment strategies that exploit information about different fundamentals. On the one hand, the presence of other informed investors generates illiquidity. On the other hand, investors who use different strategies can serve as quasi-noise traders for each other, thereby also supplying each other with liquidity. Thus, investment strategies can be substitutes or complements. Such externalities in information acquisition have effects on investor herding, comovement in prices and liquidity across assets, trade volume, and the informational role of prices. They further affect the relationship between financial markets and information markets. Information market competition fosters investor diversity, whereas monopoly power promotes investor herding. Also, in order to benefit from quasi-noise trading, a financial institution may engage in both proprietary trading and information sales. Security-Voting Structure and Bidder Screening. This paper shows that non-voting shares can promote takeovers. When the bidder has private information, shareholders may refuse to tender because they suspect to sell at an ex-post unfavourable price. The ensuing friction in the sale of cash flow rights can prevent an efficient sale of control. Separating cash flow and voting rights mitigates this externality, thereby facilitating takeovers. In fact, the fraction of non-voting shares can be used to discriminate between efficient and inefficient bidders. The optimal fraction decreases with managerial ability, implying an inverse relationship between firm value and non-voting shares. As non-voting shares increase control contestability, share reunification programs entrench managers of widely held firms, whereas dual-class recapitalizations can increase shareholder wealth. Signaling in Tender Offer Games. This paper examines whether a bidder can use the terms of the tender offer to signal the post-takeover security benefits to the shareholders of a widely held target firm. As atomistic shareholders extract all the gains in security benefits, signaling equilibria are subject to a constraint that is absent from bilateral trade models. The buyer (bidder) must enjoy gains from trade that are excluded from bargaining (private benefits), but can nonetheless be relinquished and enable shareholders to draw inference about the security benefits. Restricted bids and cash-equity offers do not satisfy these requirements. Dilution, debt financing, probabilistic takeover outcomes and toeholds are all viable signals because they make bidder gains depend on the security benefits in a predictable manner. In all the signaling equilibria, lower-valued types must forgo a larger fraction of their private benefits and these signaling costs prevent some takeovers. When the bidder has additional private information about the private benefits as in the case of two-dimensional bidder types, fully revealing equilibria cease to exist. This does not hold once bidders can offer not only cash or equity but also (more) elaborate contingent claims. Offers which include options avoid inefficiencies and implement the symmetric information outcome. Goldrush Dynamics of Private Equity. This paper presents a simple dynamic model of entry and exit in a private equity market with heterogeneous private equity firms, a depletable stock of target companies, and rational learning about investment profitability. The predictions of the model match a number of stylized facts: Aggregate fund activity follows waves with endogenous transitions from boom to bust. Supply and demand in the private equity market are inelastic, and the supply comoves with investment valuations. High industry performance precedes high entry, which in turn precedes low industry performance. There are persistent differences in fund performance across private equity firms, first-time funds underperform the industry, and first-time funds raised in booms are unlikely to be succeeded by a follow-on fund. Fund performance and fund size are positively correlated across firms, but negatively correlated across consecutive funds of a private equity firm. Finally, booms can make ”too much capital chase too few deals.” Reputable Friends as Watchdogs: Social Ties and Governance. To examine how governance is affected when a designated supervisor befriends the person to be supervised, this paper embeds a delegated monitoring problem in a social structure: the supervisor and the agent are friends, and the supervisor desires to be socially recognized for having integrity. Strengthening the friendship weakens the supervisor’s monitoring incentives, forging an alliance against the principal (bonding). But the agent also grows more reluctant to put the supervisor’s perceived integrity at risk, thus becoming more aligned with the principal (bridging). If the supervisor’s desire for social recognition is strong, the principal’s preferences regarding the supervisor-agent friendship are bipolar. Weak friendship makes the supervisor monitor intensively to save face. Strong friendship leads the supervisor to abandon monitoring but the agent to behave well in order to protect the supervisor from losing face. The strength of friendship necessary for the latter outcome decreases in the supervisor’s desire for esteem; that is, image concerns leverage the bridging effect of friendship. This suggests that overlapping personal and professional ties can enhance delegated governance in cultures or contexts where social recognition is important, and provides a novel perspective on issues related to crony capitalism, corporate governance, and organizational culture. / Diss. Stockholm : Handelshögskolan, 2009 Sammanfattning jämte 5 uppsatser

For more than 40 years, a tremendous number of studies have empirically explored the relationship between Corporate Environmental Performance (CEP) and Corporate Financial Performance (CFP). This study considers the relationship from a new perspective—via a qualitative research approach based on expert interviews. First, practitioners are queried for their view on the link between CEP and CFP and how to measure it. Since the vast majority see a positive relationship, this study contributes with a new form of evidence that it pays to be green. The chosen qualitative approach also allows a more detailed analysis of underlying cause-and-effect mechanisms. For instance, interviewed practitioners emphasize a direct and indirect impact from CEP on CFP. Second, the study conducts interviews with experts from research and associations (non-practitioners) and compares the viewpoints of the two interview groups. One prevalent difference refers to the fact that non-practitioners do not focus on the two impact levels. Moreover, business experts perceive the link between CEP and CFP as much less complex and reveal more pragmatically oriented considerations. The study then discusses how the interview results and identified differences can be used to direct future research and to support corporations in their move towards sustainability.

本研究考慮市場、規模、淨值市價比及前期累積報酬，這四個影響股票報酬的因子，分別以個股特徵之持股比例變動法與四因子評估模型，對共同基金風險調整後的報酬作績效評比，不但可以評估基金的選股能力與擇時能力，並進一步瞭解報酬之風險來源。最後討論這兩種評比方式的適用性，並藉由基準投資組合將市場股票區分成不同的風險類別，根據基金在各類別股票的持有比例，引伸出對基金持股風格的另一種看法。現將本篇研究結果整理如下： 1. 四因子模型對於資產的解釋能力比資本資產評價模型（CAPM）好；並且透過規模、淨值市價比、前期累積報酬之風險溢酬因子，可以瞭解報酬之不同風險來源。 2. 依照個股特徵為基準之持股比例變動法，計算出實際績效、特徵擇時、特徵選股及平均持股型態的績效。結果顯示共同基金多具有正的選股能力，擇時能力，但經過檢定，並沒有顯著的超額報酬。 3. 以四因子評價模型對共同基金績效做評估。結果發現幾乎不具有顯著的超額報酬；兩種方法的評比結果相類似。但是部份基金在規模、與前期累積報酬項有顯著異於零的結果，顯示基金在規模、量能操作上有穩定的績效表現，因此使得檢定的結果顯著。 4. 而以持股類型風格上來看，顯示部份基金會高度持有大型股、以及過去表現良好的股票，持股風險類群明顯而集中，屬於穩健、偏重長期，並配合量能操作的投資策略。 最後根據本文的實證結果，分別對投資人與基金經理人提出建議。而從持股比例計算的過程，對持股風格分析提供一個更簡易明瞭的看法，並將研究中發現的問題，一併列在建議中，提供給後續研究者作為參考。 第一章 緒論…………………………………………1 第二章 文獻回顧……………………………………4 第一節 風險調整因素……………………………4 第二節 四因子評估模型…………………………7 第三節 依個股特徵之持股比例變動法…………9 第三章 研究設計……………………………………13 第一節 研究假說…………………………………13 第二節 研究架構…………………………………14 第三節 研究範圍與期間…………………………16 第四節 變數定義與資料處理……………………18 第四章 實證結果與分析……………………………22 第一節 四因子評估模型…………………………22 第二節 共同基金績效評估………………………27 第三節 基金之持股類型比例……………………36 第五章 結論與建議…………………………………40 第一節 結論………………………………………40 第二節 建議…………………………………………41 參考文獻……………………………………………45