Demian, are you sure the selling had to be done by last Friday? This link says QQQQ has until the 24th to sell off and reconstitute: http://www.indexuniverse.com/section...rebalance.html.
While the index always has 100 stocks, the trust running QQQQ has to add and delete names through a bidding process with market participants. These so-called rebalancing trades are due to take place in a five-business-day period, starting Dec. 18 and lasting through Dec. 24.
So is that just QQQQ, or does every fund that follows the index have the same amount of time?