مساهمة شركات راس المال المخاطر في تمويل الموسسات الصغيرة والمتوسطة حالة الولايات المتحدة الامريكية في الفترة 1980-2015

This study sheds light on venture capital firms participation in small and medium enterprises' finance in the United States of America during the period (1980-2015), it consists of the conceptual framework of this financing method in the first phase, and in the second phase, it has been studied a work experience of the venture capital firms in the U.S.A, The study leads to show the importance of using the venture capital as a financing technique for helping the small and medium enterprises, and follow the historical stages of this kind of the Financial intermediation in U.S.A, In parallel was highlighted the procedures and programs undertaken by this last to upgrade the work of venture capital firms, In an attempt to determine the success factors of the work of these companies.