Every three years, when the BIS releases its new foreign-exchange market survey, the WSJ Dollar Index will be reweighted using the bank's latest trading volume figures, making it a dynamic index that evolves with the constantly changing market.

WSJ: WSJ, FX Trader Launch Dollar Index

Viewing the active versus passive debate by studying individual asset class comparisons is useful, but it misses an important dynamic that benefits portfolio returns that hold several different index funds representing multiple asset classes.

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What they will find is a richer experience that offers granular insight into fitness, sleep and food patterns, a real-time updating social feed, a dynamic emoticon, usage insights and access to a searchable caloric index.

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The changing dynamic of Japan's stock-market rally can be seen in the Topix index, whose 1, 669 stocks are divided into 33 subindexes, including shares of both exporters and domestically-focused companies, capturing a broader picture than the tech-heavy Nikkei.

WSJ: Japanese Stock Rally Shifts To a New Gear

The iShares Dow Jones U.S. Pharmaceuticals Index Fund (IHE) has Watson at 2.84% of its holdings and PowerShares Dynamic Pharmaceuticals Portfolio (PJP) is 2.8% WPI.

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