Institutions Holding Put Options on Proshares Ultrashort Lehman 7 (PST)

This table provides information about the put option holders of Proshares Ultrashort Lehman 7 (PST). We have compiled data on the institutions that hold put options on the stock, with a total of 1,200 put options outstanding, which have been reported (via 13F filing form) to have a value of $28,000 at the end of the reported quarter. These put option holders have the right, but not the obligation, to sell AAPL shares at a specified price within a certain time frame.