| QDS | See Quote Dissemination System | |
| qualified institutional investor | An institutional investor permitted under Securities and Exchange Commission rules to trade privately-placed securities with other qualified institutional investors without registering the securities with the SEC. A qualified institutional investor must have at least $100 million under management. | |
| quarterly report (Form 10 Q) | A report, required by the SEC of publicly-held companies, filed quarterly, that provides unaudited financial information and other selected material. | |
| quotation size | The maximum number of shares per order of a particular security that a Market Maker is willing to buy or sell at his or her current price. | |
| Quote Dissemination System (QDS) | Provides Nasdaq Market Maker quotations to outside services and vendors. |
