Query String:
http://www.nasdaqtrader.com/rss.aspx?feed=tradehalts

Example:
Security CGNX halted on 11/01/2010
Security MVIS halted on 11/01/2010
Security HSII halted on 11/02/2010

If the current trade halt day was 11/02/2010, only security HSII would be included in the results.

Query String:
http://www.nasdaqtrader.com/rss.aspx?feed=tradehalts&haltdate=mmddyyyy

Example:
Security DIVX halted on 10/08/2010 and resumed trading on 10/11/2010
Security HRBN halted on 10/11/2010 and resumed trading on 10/11/2010

For securities halted for more than one day, the halt date reflected will be the first date it was halted. Therefore, if the trade halt date specified was 10/11/2010, only security HRBN would be included in the results.

Query String:
http://www.nasdaqtrader.com/rss.aspx?feed=tradehalts&resumedate=mmddyyyy

Example:
Security DIVX halted on 10/08/2010 and resumed trading on 10/11/2010
Security HRBN halted on 10/11/2010 and resumed trading on 11/11/2010

Assuming the resumption date entered was 11/11/2010, only security HRBN would be returned.

Query String:
http://www.nasdaqtrader.com/rss.aspx?feed=tradehalts&haltdate=mmddyyyy&resumedate=mmddyyyy

Example:
Security BEAT halted on 10/08/2010 and resumed trading on 10/11/2010
Security HRBN halted on 10/11/2010 and resumed trading on 10/11/2010
Security CGNX halted on 11/01/2010 and resumed trading on 11/01/2010

Assuming the halt date entered was 10/08 and resumption date entered was 11/01/2010, only securities BEAT and CGNX would be returned.