all securities which are or may be the subject of dealings on an organized market, (a) shares and debt securities, as well as securities equivalent to shares and debt securities; (b) contracts or rights to subscribe for, acquire or dispose of securities referred to in (a); (c) futur, those classes of securities which are normally dealt in on the capital market, such as government securities, shares in companies, negotiable securities giving the right to acquire shares by subscript, the stocks, shares, certificates of deposit, etc., which can be bought or sold on a stock exchange