Standard & Poor's Announces Change to U.S. Index

NEW YORK, June 7, 2011 /PRNewswire/ -- Nanometrics Inc. (NASD:NANO) will replace TradeStation Group, Inc. (NASD:TRAD) in the S&P SmallCap 600 index after the close of trading on Thursday, June 9.  Monex Group Inc. is acquiring TradeStation Group in a tender offer expected to be completed soon pending final approvals.

Standard & Poor's will monitor this transaction, and post any relevant updates on its website: www.standardandpoors.com.

Nanometrics is a provider of advanced, high-performance process control metrology systems. Headquartered in Milpitas, CA, the company will be added to the S&P SmallCap 600 GICS (Global Industry Classification Standard) Semiconductor Equipment Sub-Industry index.

Following is a summary of the change:

S&P SMALLCAP 600 INDEX  – June 9, 2011
	COMPANY	GICS ECONOMIC SECTOR	GICS SUB-INDUSTRY
ADDED	Nanometrics	Information Technology	Semiconductor Equipment
DELETED	TradeStation Group	Financials	Investment Banking & Brokerage

For more information about S&P Indices, please visit www.standardandpoors.com/indices.

About S&P Indices

S&P Indices, the world's leading index provider, maintains a wide variety of investable and benchmark indices to meet an array of investor needs. Over $1.25 trillion is directly indexed to Standard & Poor's family of indices, which includes the S&P 500, the world's most followed stock market index, the S&P/Case-Shiller Home Price Indices, the leading measure of U.S. home prices, the S&P Global BMI, an index with approximately 11,000 constituents, the S&P GSCI, the industry's most closely watched commodities index, and the S&P National AMT-Free Municipal Bond Index, the premier investable index for U.S. municipal bonds. For more information, please visit www.standardandpoors.com/indices.

For more information contact:

David M. Blitzer, Ph.D.

Managing Director & Chairman of the Index Committee

[phone]

SOURCE Standard & Poor's

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