COB question open house

i would love to know too

copied mostly from somewhere else:

Yes, it is entirely possible and does happen. NPC sororities don't have to make a public announcement or hold events. Continuous Open Bidding is not a 'process' like a set rush period, and doesn't need prior approval from panhellenic, it's simply an option for any sorority chapter that either doesn't make quota during formal recruitment or falls below whatever the chapter total membership number is that is set by panhellenic. A sorority is allowed to offer bids whenever they are eligible to do so, and whoever accepts a bid just signs an MRABA and gets registered with panhellenic as a new member of that chapter.

It does not make sense for a chapter to announce they are offering COB if they have very limited open spots and are already sure of who they want and who wants them. That would be misleading and unfair and a hassle to all concerned. It is only in the best interest for chapters to make an announcement if they have more than a few open spots to fill from larger December graduations. In that case they are actively recruiting for quality members and you will see their announcement that they are open to COB.

so which sororities are doing COB actively now?