1) Are you putting in sell-orders at 99.99 AND 100.00? 2) The last day of the year could be interesting in the cash market. 3) Are there option strike prices listed at 100.00 yet?
I'm going hold fed futures to expiration, I think there is a chance fed does 'unconventional' stuff(like taxing banks excess reserves) and fed funds goes negative, the market seems not aware of this