diff --git a/migrations/008_delta.sql b/migrations/008_delta.sql
index 14fbc21..8a1518b 100644
--- a/migrations/008_delta.sql
+++ b/migrations/008_delta.sql
@@ -1,2 +1,9 @@
 ALTER TABLE stacktach_instanceexists ADD `audit_period_beginning` numeric(20, 6);
-ALTER TABLE stacktach_instanceexists ADD `audit_period_ending` numeric(20, 6);
\ No newline at end of file
+ALTER TABLE stacktach_instanceexists ADD `audit_period_ending` numeric(20, 6);
+CREATE INDEX `stacktach_instanceusage_987c9676` ON `stacktach_instanceusage` (`launched_at`);
+CREATE INDEX `stacktach_instancedeletes_987c9676` ON `stacktach_instancedeletes` (`launched_at`);
+CREATE INDEX `stacktach_instancedeletes_738c7e64` ON `stacktach_instancedeletes` (`deleted_at`);
+CREATE INDEX `stacktach_instanceexists_987c9676` ON `stacktach_instanceexists` (`launched_at`);
+CREATE INDEX `stacktach_instanceexists_738c7e64` ON `stacktach_instanceexists` (`deleted_at`);
+CREATE INDEX `stacktach_instanceexists_23564986` ON `stacktach_instanceexists` (`audit_period_beginning`);
+CREATE INDEX `stacktach_instanceexists_b891fefb` ON `stacktach_instanceexists` (`audit_period_ending`);
\ No newline at end of file
diff --git a/migrations/008_exists_audit_period_indexes.sql b/migrations/008_exists_audit_period_indexes.sql
index 8807871..56611e4 100644
--- a/migrations/008_exists_audit_period_indexes.sql
+++ b/migrations/008_exists_audit_period_indexes.sql
@@ -19,11 +19,18 @@ CREATE INDEX `stacktach_lifecycle_9b2555fd` ON `stacktach_lifecycle` (`last_stat
 CREATE INDEX `stacktach_lifecycle_67421a0e` ON `stacktach_lifecycle` (`last_task_state`);
 CREATE INDEX `stacktach_lifecycle_dcf9e5f3` ON `stacktach_lifecycle` (`last_raw_id`);
 CREATE INDEX `stacktach_instanceusage_888b756a` ON `stacktach_instanceusage` (`instance`);
+CREATE INDEX `stacktach_instanceusage_987c9676` ON `stacktach_instanceusage` (`launched_at`);
 CREATE INDEX `stacktach_instanceusage_792812e8` ON `stacktach_instanceusage` (`request_id`);
 CREATE INDEX `stacktach_instanceusage_f321fd7` ON `stacktach_instanceusage` (`instance_type_id`);
 CREATE INDEX `stacktach_instancedeletes_888b756a` ON `stacktach_instancedeletes` (`instance`);
+CREATE INDEX `stacktach_instancedeletes_987c9676` ON `stacktach_instancedeletes` (`launched_at`);
+CREATE INDEX `stacktach_instancedeletes_738c7e64` ON `stacktach_instancedeletes` (`deleted_at`);
 CREATE INDEX `stacktach_instancedeletes_365c3a01` ON `stacktach_instancedeletes` (`raw_id`);
 CREATE INDEX `stacktach_instanceexists_888b756a` ON `stacktach_instanceexists` (`instance`);
+CREATE INDEX `stacktach_instanceexists_987c9676` ON `stacktach_instanceexists` (`launched_at`);
+CREATE INDEX `stacktach_instanceexists_738c7e64` ON `stacktach_instanceexists` (`deleted_at`);
+CREATE INDEX `stacktach_instanceexists_23564986` ON `stacktach_instanceexists` (`audit_period_beginning`);
+CREATE INDEX `stacktach_instanceexists_b891fefb` ON `stacktach_instanceexists` (`audit_period_ending`);
 CREATE INDEX `stacktach_instanceexists_38373776` ON `stacktach_instanceexists` (`message_id`);
 CREATE INDEX `stacktach_instanceexists_f321fd7` ON `stacktach_instanceexists` (`instance_type_id`);
 CREATE INDEX `stacktach_instanceexists_c9ad71dd` ON `stacktach_instanceexists` (`status`);
diff --git a/stacktach/models.py b/stacktach/models.py
index b63f5f2..98306ee 100644
--- a/stacktach/models.py
+++ b/stacktach/models.py
@@ -79,7 +79,7 @@ class InstanceUsage(models.Model):
     instance = models.CharField(max_length=50, null=True,
                                 blank=True, db_index=True)
     launched_at = models.DecimalField(null=True, max_digits=20,
-                                      decimal_places=6)
+                                      decimal_places=6, db_index=True)
     request_id =  models.CharField(max_length=50, null=True,
                                    blank=True, db_index=True)
     instance_type_id =  models.CharField(max_length=50,
@@ -92,9 +92,9 @@ class InstanceDeletes(models.Model):
     instance = models.CharField(max_length=50, null=True,
                                 blank=True, db_index=True)
     launched_at = models.DecimalField(null=True, max_digits=20,
-                                      decimal_places=6)
+                                      decimal_places=6, db_index=True)
     deleted_at = models.DecimalField(null=True, max_digits=20,
-                                     decimal_places=6)
+                                     decimal_places=6, db_index=True)
     raw = models.ForeignKey(RawData, null=True)
 
 
@@ -112,13 +112,14 @@ class InstanceExists(models.Model):
     instance = models.CharField(max_length=50, null=True,
                                 blank=True, db_index=True)
     launched_at = models.DecimalField(null=True, max_digits=20,
-                                      decimal_places=6)
+                                      decimal_places=6, db_index=True)
     deleted_at = models.DecimalField(null=True, max_digits=20,
-                                     decimal_places=6)
+                                     decimal_places=6, db_index=True)
     audit_period_beginning = models.DecimalField(null=True, max_digits=20,
-                                                 decimal_places=6)
+                                                 decimal_places=6,
+                                                 db_index=True)
     audit_period_ending = models.DecimalField(null=True, max_digits=20,
-                                              decimal_places=6)
+                                              decimal_places=6, db_index=True)
     message_id = models.CharField(max_length=50, null=True,
                                   blank=True, db_index=True)
     instance_type_id = models.CharField(max_length=50,