What is market cap?Market Cap
Share price × total shares: what the market thinks the whole company is worth.
Learn “market cap” in an animated lesson
- Indexes & ETFsHow Indexes Are Weighted
Do big and small companies carry the same clout in an index? Compare cap-weighted and equal-weighted to see who moves the index.
- Stock BasicsWhat Is a Stock?
Slice a company into many small pieces and each piece is one share. Buy shares and you own a small part of the company.
Related terms
See how “market cap” works for yourself with an animation you can drag and play.
Go to “How Indexes Are Weighted”