TIPS are not issued every month. It has a different pattern for 5s, 10s and 30s.
BTW... check out ZeroHedge "Algo Bots Gone Wild" some 140 stocks were wacked-out by algos gone haywire this morning Aug 1st. Even has video analysis with the trade feed to watch. Banks like C, BAC and WFC were targeted but others like GS, JPM and MS were not.