ISE Members consist of the intermediary institutions that have been authorized to operate in the capital market.
Capital markets activities:
- Underwriting
- Trading Brokerage
- Portfolio Management
- Investment Consulting
- Repo/Reverse Repo
- Margin Trading, Short Selling, Stock Borrowing and Lending
- Derivative Trading Brokerage
Members trading on the Exchange markets and floors can be categorized under three groups as intermediary institutions, commercial banks and investment and development banks.
The trade name of an intermediary institution should include the word “securities”. Intermediary institutions which have all of the authorization certificates for trading brokerage, underwriting, repo-reverse repo, portfolio management and investment consulting may use the word “investment” in their trade names.
ACTIVITIES TO BE CONDUCTED BY INTERMEDIARY INSTITUTIONS AND BANKS ON CAPITAL MARKETS
| Intermediary institutions | Commercial Banks | Development/Investment Banks |
| Stock trading brokerage on the Stock Exchange |  |
|
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| Bond trading brokerage |  | | |
| Repo-Reverse Repo | | | |
| Derivatives trading brokerage | | | |
| Underwriting | |
| |
| Investment consulting | |
| |
| Portfolio management | |
| |
In line with the principle decision of the Capital Markets Board dated 15.08.1996, Banks have assigned their Stock Market operations to an intermediary institution they have set up or acquired.
INTERMEDIARY INSTITUTIONS AT ISE
| Market | Brokerage Houses
| Development/
Investment Banks | Commercial Banks | Total |
| Stock Market | 103 | 0 | 0 | 103 |
| Emerging Companies Market* | 103 | 0 | 0 | 103 |
| Bonds and Bills Market Outright Purchases and Sales Market | 90 | 11 | 30 | 131 |
| Bonds and Bills Market Repo-Reverse Repo Market | 56 | 11 | 29 | 96 |
| Foreign Securities Market International Bonds Market | 90 | 11 | 30 | 131 |
*All members who are authorized to trade on the Stock Market may also trade on the Emerging Companies Market.