Among the largest underlying components of TYH, in trading today AOL Inc. ( NYSE: AOL) is up about 0.8%, AVX Corp. ( NYSE: AVX) is up about 1%, and Acme Packet Inc ( NASD: APKT) is relatively unchanged.

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The software was written for vector arithmetic, which is proving useful now that Intel has support for it with Advanced Vector Extensions (AVX) and SSE instructions which are available on the latest generation of its Sandy Bridge processors.

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