Capital stock is the number of common and preferred shares that a company is authorized to issue, and is recorded in shareholders' equity. Capital stock is the total amount of shares a company is authorized to issue, while treasury stock is the number of shares a company holds in its treasury.The capital stock is an important source of propagation in slumps, a point that has escaped analysis in the cycle-around-trend view of fluctuations. It is the total amount of physical capital at any particular moment in time. Capital is one of the factors of production. Capital stock are equity holders in the company. Capital stock refers to the total value of all physical assets and equipment that a company uses to produce goods and services. Capital formation is a concept used in macroeconomics, national accounts and financial economics. Occasionally it is also used in corporate accounts. By issuing capital stocks, businesses open up a potential revenue stream that does not add to their debt burden.