Another non-amyloid drug showing intriguing results is Dimebon from Medivation (nasdaq: MDVN - news - people ).

FORBES: Alzheimer's Drug Showdown

Medivation ( MDVN - news - people ).

FORBES: Boomers will fuel a bull market in health care stocks.

Among the largest underlying components of XBI, in trading today Spectrum Pharmaceuticals Inc ( NASD: SPPI) is up about 1.6%, Onyx Pharmaceuticals, Inc. ( NASD: ONXX) is trading flat, and Medivation Inc ( NASD: MDVN) is lower by about 0.1%.

FORBES: XBI, SPPI, ONXX, MDVN: ETF Outflow Alert