近年來，我國政府大力推動海外企業來台上市，成效亮眼。在這股熱潮下，為了解海外企業第一上市新股和第二上市台灣存託憑證於我國資本市場掛牌後的表現，本研究針對2009年四月至2010年十二月間，外國與本國發行人在台灣證券交易所新上市之股票和台灣存託憑證進行實證分析。除檢定其是否存在異常報酬外，並綜合過往文獻、相關法令規範及迴歸分析結果，探討影響其異常報酬的可能原因。本研究主要發現如下： （1）國內外企業在台新上市股票及台灣存託憑證均具有顯著的期初異常報酬，其高低依序為－海外企業第一上市新股、國內企業新上市股票、海外企業第二上市台灣存託憑證。 （2）台灣存託憑證期初異常報酬的成因並非來自於承銷價格的低估，而是來自於投資人對於蜜月行情的過度反應。其主要證據為－平均達3%的發行溢價、蜜月期結束後顯著為負的累積異常報酬、及對期初異常報酬最具影響力的示範效果因子。 （3）國內企業在台新上市股票期初異常報酬的成因主要來自於承銷商與發行公司資訊不對稱所造成的承銷價格低估。其主要證據為－新股上市後穩定且接近1.5%的累積異常報酬、及對期初異常報酬最具影響力的折價幅度因子。 （4）海外企業來台第一上市新股異常報酬的成因可能部分來自於發行公司與投資人資訊不對稱所造成的承銷價格低估；部分則可能來自於投資人對蜜月行情的過度反應。其主要證據為－蜜月期結束後為負的累積異常報酬、及海外企業來台第一上市新股與國內新上市股票的合併資料迴歸中，群體效果、中籤率與海外第一上市名目變數等顯著影響因子的間接支持。 / This study attempts to investigate the different patterns of the abnormal returns of Taiwan listings by foreign issuers and IPOs by domestic issuers, for the period from April, 2009 through December, 2010. Of particular interest is to examine the determinants of the abnormal returns. The major findings of the study are as the follows: (1)Empirical results indicate that all Taiwan listing stocks, including IPOs by foreign and domestic issuers and TDRs, have significant abnormal initial returns. Among them, IPOs by foreign issuers show the highest abnormal initial returns while TDRs show the lowest. (2)Evidences like the negative CARs, the average 3% premium of TDR issuance and the demonstration effect suggest that investor overreaction could be a major factor contributing to TDRs’ significant abnormal initial returns. (3)Evidences also suggest the under-pricing by the better-informed underwriters may cause significant abnormal initial returns of IPOs by domestic issuers. The IPO discount is discussed as an in-depth demonstration. (4)The study assumes that the significant abnormal initial returns of IPOs by foreign issuers partly result from the under-pricing as a signal to attract investors, and partly result from investor overreaction.

In late Mars 2020, Covid19was declared to be a pandemic by the World Health Organization.The following crisis negatively affected the overall economy and also the Swedish corporate bond market. Generally, corporate bonds have been described as secure investments during turbulent market conditions, but now they decreased in value rapidly. The sellpressure was of unprecedented measures and it became difficult and costly for companies to issue new corporate bonds in order to refinance operations. Meanwhile, it became difficult for investors to sell their holdings as the liquidity deteriorated. Shortly after, the Swedish National Bank declared the Swedish corporate bond market to be highly dysfunctional. Moreover, the Swedish National Bank and the Financial Supervisory Authority identified some characteristics of the Swedish corporate bond market that contributed to the severe market stress, namely; (1) Limited liquidity and a small market (2) Lacking transparency and unreliable price information (3) Most issuers lacking a credit rating (4) A homogeneous group of investors and (5) Real estate companies constituting a large share of total issuers. These characteristics are defined as the five areas of concern in this thesis. This qualitative study is based on interviews with market participants. The objective is to identify which area of concern should be prioritized in order to improve the Swedish corporate bond market and which improvement measure is deemed most effective. The results show that transparency is the area of concern that should be prioritized. Nevertheless, the new selfregulations that will be implemented July 1st, 2021 with the purpose to improve transparency is not deemed to be enough, but rather a step in the right direction. Therefore, an iterative process is suggested, continuously evaluating and adjusting, ensuring that transparency improves but not to such an extent that liquidity is negatively impacted. / I mars 2020 deklarerade Världshälsoorganisationen att spridningen av Covid19 hade utvecklats till en pandemi. Krisen påverkade hela världsekonomin negativt och även den svenska företagsobligationsmarknaden. Företagsobligationer har generellt beskrivits som säkra investeringar under turbulenta marknadsförhållanden, men nu förlorade de sitt värde mycket snabbt. Försäljningstrycket var enormt och gjorde att det blev dyrt för företag att emittera nya obligationer och refinansiera sin verksamhet. Samtidigt blev det svårt för investerare att sälja sina innehav då likviditeten snabbt försämrades. Strax därefter uppgav Riksbanken att företagsobligationsmarknaden var högst dysfunktionell. Vidare identifierade Riksbanken och Finansinspektionen fem karaktärsdrag på den svenska företagsobligationsmarknaden som kan ha bidragit till den stressade marknadssituationen. Karaktärsdragen var följande; (1) Begränsad likviditet och en liten marknad (2) Bristande transparens och opålitlig prisinformation (3) Faktumet att många emittenter saknar kreditbetyg (4) En homogen grupp av investerare (5) Majoriteten av emittenterna utgörs av fastighetsbolag. De fem identifierade karaktärsdragen har definierats som de fem problemområdena i följande uppsats. Uppsatsen är en kvalitativ studie baserad på intervjuer med marknadsaktörer. Målet är att identifiera vilket av de fem problemområdena som bör prioriteras i arbetet mot en förbättrad företagsobligationsmarknad samt att fastslå vilka förbättringsåtgärder som anses vara mest effektiva. Resultaten visar att transparens är de problemområde som bör prioriteras men att den nya självregleringen som skall implementeras den första juli år 2021 med syftet att förbättra transparensen anses vara otillräcklig. För att förbättra transparensen föreslås en iterativ process med kontinuerlig utvärdering och anpassning av regleringar. Genom en iterativ process kan man även säkerställa att transparenskraven inte blir så pass strikta att de påverkar likviditeten negativt.

Les législations concernant les marchés financiers régissent non seulement les marchés, mais également les acteurs, les produits ainsi que les activités dans les marchés. En utilisant ces outils juridiques indispensables, les législateurs des deux côtés de l'Atlantique visent, entre autres, à protéger les investisseurs dont la confiance est primordiale pour les marchés, d'une part, et à diminuer les risques systémiques dont le déclenchement pourrait survenir dans un contexte financier de plus en plus globalisé, d'autre part. En effet, après la crise financière globale de 2008, les risques systémiques ont attiré davantage l'attention législative. À partir desdits objectifs que les législateurs veulent atteindre, nous essayons de trouver et analyser les particularités des législations concernées, tant en France ou dans l'Union européenne qu'aux États-Unis, en passant par la comparaison des dispositions législatives ou des initiatives législatives à travers l'Atlantique, avec la considération de l'évolution législative respective. Nous apportons aussi nos réflexions sur les insuffisances ou les déficiences à l’égard de mesures ou d’efforts législatifs pris en compte par les législateurs transatlantiques en vue de réaliser ces objectifs. Face à une crise financière sans précédent à nos jours, et donc à l'exigence d'une réaction législative active, appropriée, opportune et raffinée, il nous semble qu’il est le temps pour les législateurs en France, dans l'Union et aux États-Unis d'approfondir leurs connaissances sur des produits financiers en innovation sans cesse, de mieux adapter leurs stratégies législatives aux développement des activités financières et des entités finiancières, et de renforcer leurs coopérations et coordinations en profondeur dans le domaine de réglementation et supervision financière, et enfin, de mieux réaliser leurs buts poursuivis. / The legislations concerning financial markets govern not only the markets, but also the participants, the products and the activities as well in the markets. By using these indispensable legal tools, the legislators of both sides of Atlantic aim at, among others, protecting the investors whose confidence is of top priority to the markets, on the one hand, and reducing the systemic risk which would occur in a more and more globalised financial context, on the other. Indeed, after the global financial crisis of 2008, systemic risk has drawn more legislative attention. From the abovementioned objectives which the legislators would like to achieve, we try to find and analyze the particularity of the legislation concerned, both in France or in the European Union and in the USA, by way of comparison of legislative dispositions or legislative initiatives across the Atlantic, with the consideration about their respective legislative evolution. We also give our reflections on the insufficiencies or the deficiencies with regard to the legislative measures or efforts taken by the transatlantic legislators to realize those objectives. Facing the actual and unprecedented financial crisis, and thus a requirement of dynamic, appropriate, timely and refined legislative reaction, it seems to us that it is the time for legislators in France, in the EU and in the USA to deepen their knowledge about financial products of non-stop innovation, to better adapt their legislative strategies to the development of financial activities and financial entities, to reinforce their cooperation and coordination in depth and in width in the field of financial regulation and supervision, and finally, to better fulfill their pursuing goals.