Stock Trading History of California Public Employees Retirement System

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider California Public Employees Retirement System since year 2005. The trader's CIK number is 919079. At the time of this reporting, California Public Employees Retirement System is the 10% Owner of Thomas Weisel Partners Group, Inc. (stock ticker symbol TWPG).

Stock purchases, sales, and option exercises reported by *California Public Employees Retirement System* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2006-02-07	TWPG	Thomas Weisel Partners Group, Inc.	Sale	1,153,847	15.00	17,307,705

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by California Public Employees Retirement System (10% Owner of Thomas Weisel Partners Group, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.