創(chuàng)業(yè)板高管增持對于公司股價影響的實證研究
發(fā)布時間:2018-04-05 10:52
本文選題:創(chuàng)業(yè)板 切入點:高管增持 出處:《上海交通大學(xué)》2014年碩士論文
【摘要】:與主板相比,創(chuàng)業(yè)板對應(yīng)的主要是新興行業(yè)里面的中小企業(yè),上市門檻比主板要低,經(jīng)營風(fēng)險高于主板。目前國內(nèi)對于高管增持的研究較少,隨著法律法規(guī)放開對于高管增持的限制,對此類研究的價值將逐漸凸顯出來。 本文與現(xiàn)有研究的不同之處在于:首先本文研究的是中國大陸證券市場,屬于新興市場,跟西方研究的成熟市場來說有較多理論并無法契合。其次目前國內(nèi)的高管增持研究多是考察在短期(1個月內(nèi)甚至是公告后1天)內(nèi)高管增持的信號對于股價的影響,本文認(rèn)為由于相關(guān)法規(guī)要求6個月內(nèi)不能反向交易,因此高管增持邏輯上代表了6個月以上的中長期行為;第三,高管一般對公司的經(jīng)營運行情況比較了解,對二級市場了解或認(rèn)識的不夠深入,他們通常無法準(zhǔn)確把握公司短期波動。其增持往往體現(xiàn)了公司未來凈利潤的增長上。 本文提出了4個假設(shè),經(jīng)過對2009年到2013年創(chuàng)業(yè)板高管增持有代表性的樣本數(shù)據(jù)的實證研究,有些假設(shè)被證實,有些被證偽。 得到如下結(jié)論:創(chuàng)業(yè)板高管增持向市場傳遞了中長期利好信號,期望股價在公告后6個月有顯著絕對正收益,1年有顯著絕對正收益,但在短期(公告后1個月)并沒有顯著絕對正收益。值得注意的是,高管增持本身對股價并沒有一個明顯的刺激作用,而是高管由于是公司內(nèi)部人員,其增持往往反映了多數(shù)情況下公司經(jīng)營情況的好轉(zhuǎn),,但同時也有增持后次年凈利潤增速放緩甚至下滑的情況發(fā)生,主要原因有公司規(guī)模已經(jīng)較大、業(yè)績在第二年或第三年體現(xiàn)、強(qiáng)周期行業(yè)整體不景氣拖累公司等。從中長期(半年以上)來看,股價和公司業(yè)績成正相關(guān)。創(chuàng)業(yè)板高管增持往往映射了業(yè)績,而公司基本面的好轉(zhuǎn)之后再會反映到股價上去。 提出以下建議:1、可以構(gòu)建一個創(chuàng)業(yè)板高管增持的絕對收益組合,并用于半年以上的中長期投資,相信大概率可以獲得絕對正收益。2、若要更好的提高創(chuàng)業(yè)板高管增持組合的絕對收益,由于中長期來看股價和公司業(yè)績成正相關(guān),因此在篩選創(chuàng)業(yè)板高管增持公司時要認(rèn)真研究公司所處行業(yè)基本面、公司競爭地位、公司未來的發(fā)展空間,從中挑選優(yōu)秀的公司。3、高管增持本身對股價并沒有一個明顯的刺激作用,僅代表看好公司今后的發(fā)展,還要結(jié)合其他各個要素才能挑出真正的牛股,比如說宏觀、行業(yè)基本面、公司基本面、資金成本、市場風(fēng)格、甚至技術(shù)分析等。
[Abstract]:Compared with the mainboard , the GEM corresponds to the small and medium - sized enterprises in the emerging industry , the listing threshold is lower than that of the main board , and the operation risk is higher than that of the main board . At present , there is little research on the increase of the executive branch in China , and the value of such research will be gradually highlighted as the laws and regulations release the restrictions on the increase of the executive .
This paper is different from the existing research in that : Firstly , this paper deals with the Chinese mainland securities market , which belongs to the emerging market and is not fit for the mature market of western research .
Third , executives generally have a better understanding of the company ' s operating conditions , and they are often unable to accurately grasp the company ' s short - term fluctuations . They tend to reflect the growth of the company ' s future net profit .
In this paper , four hypotheses are put forward , and some assumptions have been substantiated , some of which have been proved to be false , through an empirical study of the sample data holding a representative sample data from 2009 to 2013 .
It is worth noting that the increase in stock price has no obvious stimulating effect on stock price in the first year but also in short - term ( 1 month after the announcement ) . It is important to note that the company ' s share price has not been significantly improved in the second year or the third year . However , it is mainly due to the fact that the company has a large scale , and its performance is positive in the second year or the third year .
This paper puts forward the following suggestions : 1 . It is possible to construct a combination of absolute returns for high - tube growth of GEM and to invest in medium - and long - term investment more than half a year . It is believed that the large probability can obtain absolute positive returns . In order to improve the absolute return of stock price and company performance in the long term , it is necessary to carefully study the company ' s stock price and the company ' s future development space . In order to select the excellent company from the medium and long term , it is only necessary to carefully study the company ' s future development , and to combine other elements to pick up the real bull stock , such as macro , industry fundamentals , company fundamentals , capital cost , market style , and even technical analysis .
【學(xué)位授予單位】:上海交通大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:F832.51;F275
【參考文獻(xiàn)】
相關(guān)期刊論文 前2條
1 毛洪安;;管理股權(quán)、會計選擇與盈余質(zhì)量[J];財會通訊(學(xué)術(shù)版);2008年01期
2 李遠(yuǎn)勤;劉艷萍;;股權(quán)結(jié)構(gòu)與自愿性信息披露——來自深市國有上市公司的經(jīng)驗證據(jù)[J];統(tǒng)計與決策;2006年20期
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