Q1: When trades are placed thru MATLAB2TT interface, how do       firms enforce risk controls?

Risk controls are enforced by TT software, and hence trades placed using MATLAB2TT go thru TT's risk control module.

Q2: When trades are placed thru MATLAB2TT interface, can firms       cancel or modify those trades from out-side of MATLAB2TT?

Yes. Firms can use TT's X_Trader GUI application to monitor and modify trades originally placed using MATLAB2TT

Q3: In order to use MATLAB2TT, does the firm using TT software       need to license TT's FIX adapter software in addition to TT's       X_Trader software?

Yes. In its current implementation, MATLAB2TT is implemented using TT's FIX adapter, and hence firms need a licence of TT's FIX adapter.

For additional questions or implementation information, please contact, Kireeti Reddy at 630-886-6092 or e-mail kreddy@exchangeapi.com