There are many biggest public companies in US which is contributing a lot in making US a strong economy. Some of the biggest public companies in the US are mentioned below:
It is an American multinational Technology company. The headquarter of Apple Inc. is n Cupertino, California. The Company designs, develops and sells consumer electronics, computer software etc. Some of the hardware products of Apple Inc. are iPhone Smartphone, iPad tablet computer, Mac personal computer, iPod portable media player etc.