Found this little gem .... Guess someone knows wha
Post# of 72440
"The question: "Would a CUSIP change make the short shares have to cover?"
Seems from what I have read, a CUSIP change could force the cover of NSS positons if the change is done in conjunction with a name change. It is my understanding that the mechanics of the CUSIP change (with name change) would effectively prevent trading shares of the old CUSIP # and would create an entirely new set of shares through the DTC. By doing this, the DTC is forced to account for ALL of the old shares exchanged for the new shares. Without the name change, the old shares would simply be renamed. With the name change, they are physically exchanged which will isolate phantom shares and force covering."