BBC tracks the BioShares Biotechnology Clinical Trials Index, which is sponsored by LifeSci Index Partners, LLC.

The index excludes large pharmaceuticals companies as well as medical devices and diagnostics; life science tools; specialty pharmaceuticals, generic drugs and outsourced drug delivery; healthcare services; contract research organizations; neutraceuticals; agricultural biotechnology; animal health; diversified healthcare; food sciences; information technology; and nanotechnology firms. [Interesting Biotech ETFs on the Way]

Companies with a lead drug candidate in a Phase 1, Phase 2 or Phase 3 trial can be included in that index. The index had 104 constituents at the end of the second quarter.

BioShares Biotechnology Clinical Trials Fund