The deal is subject to a majority of SFSF holders tendering their shares, and also required various regulatory approvals.

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Among the largest underlying components of IWO, in trading today Netlogic Microsystems Inc ( NASD: NETL) is up about 0.1%, SuccessFactors, Inc. ( NYSE: SFSF) is trading flat, and Clean Harbors, Inc ( NYSE: CLH) is higher by about 1.1%.

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