For some reason, IB is unable to set Alerts for RUT (my SPX alerts still work fine). I use alerts to receive texts when the underlyings reach certain prices, and on Friday night, I received an email saying my 2 RUT alerts were cancelled. When I went to set them back up today, I kept receiving a message that said "Market Data not available for Index". IB's tech support said this is a known issue that they are working to fix. Wanted to provide an FYI for others who use IB and are dealing with the same issue.