QIB

A corporate entity that falls within the "accredited investor" category, defined in SEC Rule 501 of Regulation D.
A Qualified Institutional Buyer (QIB) is one that owns and invests, on a discretionary basis, at least $100 million in securities; for a broker-dealer the threshold is $10 million. QIBs encompass a wide range of entities, including banks, savings and loans associations, insurance companies, investment companies, employee benefit plans or entities owned entirely by accredited investors. Banks and S&L associations must also have a net worth of at least $25 million to satisfy the QIB criteria.