Well the CUSIP change idea was completely debunked
Post# of 72440
1) Naked shorts don't have to cover on CUSIP change.
or
2) There was no significant naked short position in CTIX at the time of the CUSIP change.
The only third explanation I heard is that the CEs just re naked shorted IPIX to cover their CTIX markers. That doesn't hold water since they could have just done that in AMBS.
Also, just to sprinkle it in for the record, I categorically refute the lie that I am Scottsmith.
Go IPIX!