IT - INET Nordic OTF - NASDAQ OMX Volatility Guards Member Testing (106/10)

On August 23, NASDAQ OMX will start the member testing for Volatility Guards in 
INET Nordic OTF.                                                                

As earlier communicated in IT Notice 87/10 and 97/10, NASDAQ OMX Nordic will    
introduce Volatility Guards on its Nordic and Baltic equity markets scheduled   
for September 27 in PROD environment. The following orders books will be        
configured and available for testing on Aug 23:                                 


*STO First North shares will be configured in OTF:
    2E      - Order book Id: 32720                
    360ENT  - Order book Id: 36461                
    3L      - Order Book Id: 61499                

*For Iceland and the Baltic: 
    Iceland:          HAMP   - Order Book Id: 35457 
    BalticTallinn:    VSN1T  - Order Book Id: 42854 
    BalticVilnius:    ALT1L  - Order Book Id: 28421 
    BalticRiga:       BRV1R  - Order Book Id: 39582 

*Index shares: 
    MTG B    Order Book Id:  3599 - Index share in Stockholm
    SYDB     Order Book Id:  3366 - Index share in Copenhagen
    ELI1V    Order Book Id:  24254 - Index share in Helsinki
                                                  

Dynamic Volatility Guard threshold will be set to +/- 10%
Static Volatility Guard threshold will be set to +/- 15% 

NASDAQ OMX Nordic Volatility Guard - Time Table

Date       Event

2010-08-23 Date for customers to be able to test. The selected group of order
           books (see above) will be prepared for external testing attached  
           with Volatility Guards' threshold values.                         

2010-09-06 Production setup configuration will be communicated and available
           in OTF.                                                          

2010-09-27 Production launch.


Implementation Details                                                          
The halt reason (volatility halt dynamic or static) will be clarified in stop   
codes disseminated via the TradeHalt (TRh) Message in GCF-TIP and the Order Book
Trading Action in Nordic-ITCH. The new halt reason codes will be defined via the
BasicDataTableEntry message in GCF TIP and in the new Nordic Equity             
TotalView-ITCH specification v1.83.                                             

Reference data specifying the thresholds for the individual stock will be       
disseminated via the real time message OrderbookReferencePrice via GCF and not  
via the BasicDataCircuitBreaker message as communicated in IT Notice 87/10.     

Price update method field in the OrderbookReferencePrice message shall be       
interpreted as follows: - Price Update method = 1 (ReferencePrice) for Static   
Volatility Guards limits - Price Update method = 2 (LastPaidPrice) for Dynamic  
Volatility Guards limits                                                        

Note: The TIP message OrderbookReferencePrice is a real-time message, thus      
vendors querying only basic data will not receive this message. When connecting 
to GCF and requesting real-time data, both basic data and real-time messages are
disseminated and the OrderbookReferencePrice is disseminated after the basic    
data for INET source.                                                           

Find the ITCH-protocol described under the subtitle Future protocol versions on
webpage Connectivity and Protocols.                                            

Production date - see time table above.

Questions and feed-back

For further information and feedback concerning this information please contact 
your key account manager.