经济评论
經濟評論
경제평론
Economic Review
2014年
4期
122~135
,共null页
中小板上市公司 投资不足 投资过度 双边随机边界模型
中小闆上市公司 投資不足 投資過度 雙邊隨機邊界模型
중소판상시공사 투자불족 투자과도 쌍변수궤변계모형
Listed SMEs; Insufficient Investment; Over Investment; Bilateral Stochastic Frontier Model
中小板上市公司在融资约束和代理成本问题上与主板公司存在一定的差异,这两种效应影响下的我国中小板上市公司究竟是投资不足还是投资过度?本文在有效控制企业最优投资水平的前提下,运用双边随机边界模型对这一问题进行了研究,结论显示:第一,融资约束对我国中小板上市公司投资行为有显著的影响,且其影响效应大于代理成本,两者净效应整体上表现出投资不足的特征。第二,分位分析进一步发现,大多数中小板上市公司存在投资不足的情况,但也有小部分公司会过度投资。第三,融资约束效应、代理成本效应以及两者净效应在年度与地区层面具有异质性特征。其中,年度差异方面,2010年、2011年两年的融资难问题已略有缓解,但仍有进一步的政策空间;而对地区异质性与直观感受相矛盾的结论,本文则从融资需求规模和国家区域发展战略、支持政策等方面进行了必要的解释。
中小闆上市公司在融資約束和代理成本問題上與主闆公司存在一定的差異,這兩種效應影響下的我國中小闆上市公司究竟是投資不足還是投資過度?本文在有效控製企業最優投資水平的前提下,運用雙邊隨機邊界模型對這一問題進行瞭研究,結論顯示:第一,融資約束對我國中小闆上市公司投資行為有顯著的影響,且其影響效應大于代理成本,兩者淨效應整體上錶現齣投資不足的特徵。第二,分位分析進一步髮現,大多數中小闆上市公司存在投資不足的情況,但也有小部分公司會過度投資。第三,融資約束效應、代理成本效應以及兩者淨效應在年度與地區層麵具有異質性特徵。其中,年度差異方麵,2010年、2011年兩年的融資難問題已略有緩解,但仍有進一步的政策空間;而對地區異質性與直觀感受相矛盾的結論,本文則從融資需求規模和國傢區域髮展戰略、支持政策等方麵進行瞭必要的解釋。
중소판상시공사재융자약속화대리성본문제상여주판공사존재일정적차이,저량충효응영향하적아국중소판상시공사구경시투자불족환시투자과도?본문재유효공제기업최우투자수평적전제하,운용쌍변수궤변계모형대저일문제진행료연구,결론현시:제일,융자약속대아국중소판상시공사투자행위유현저적영향,차기영향효응대우대리성본,량자정효응정체상표현출투자불족적특정。제이,분위분석진일보발현,대다수중소판상시공사존재투자불족적정황,단야유소부분공사회과도투자。제삼,융자약속효응、대리성본효응이급량자정효응재년도여지구층면구유이질성특정。기중,년도차이방면,2010년、2011년량년적융자난문제이략유완해,단잉유진일보적정책공간;이대지구이질성여직관감수상모순적결론,본문칙종융자수구규모화국가구역발전전략、지지정책등방면진행료필요적해석。
There are some differences between SMEs and the main board companies on financing constraints and agency costs. Is SMEs under investment or over investment due to these two factors? This article uses bilateral stochastic frontier model to solve this problem by control the optimal investment level. Research manifests that: ( 1 ) The financing constraints had a significant impact on the investment behavior of the listed SMEs in China. Besides, this effect was greater than the agency cost, and the overall net effects showed that the investment had the characteristics of insufficiency. (2) Further fractile analysis showed that most of the listed SMEs was underinvestment; and only a few number of the listed SMEs was over investment. (3) The effect of financing constraints and cost effect , as well as the overall net effect had the characteristics of heterogeneity in regions and years. Besides,as to the annum differences, the financing difficulty has been eased slightly in 2010 and 2011, but further policy step is still needed; As to the contradictory between regional heterogeneity and intuitive feel, the article gives proper explanations from the aspects of financing needs, the regional development strategies and the supporting policies.