stock company

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A company or corporation whose capital is divided into shares.
• noun A permanent company that performs a repertoire of plays, usually at a single theater.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun finance An incorporated company the capital of which is represented by marketable shares having a certain equal par value.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a company whose capital is represented by stock
• noun a theatrical company that performs plays from a repertoire