Owners of the

Chicago Mercantile Exchange

(CME) - Get CME Group Inc. Class A Report

have never been fonder of their East Coast stock-trading peer.

About 12 months after going public on the

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, the Merc announced Friday it had priced a 2.1 million-share secondary for selling shareholders at $67 each. The offering follows the expiration of a lockup agreement and was underwritten by Morgan Stanley.

The CME initial public offering priced at $35 on Dec. 6, 2002, and shares were at $42.90 by the end of the first day's trading. The shares approached $80 in early August and have eased a bit since then, but still represent nearly a 100% premium from their offering price.

The shares remain reasonably valued, however, costing about 16 times the 2004 Thomson First Call estimate.

There's a 308,000-share overallotment option on Friday's deal.