At least TPIV held their PPS unlike CTIX that got pounded by the evacuation due to AVX. Just part of life in Biotechs, fortunately at the time I moved some funds here I did not make a ripple to the PPS
You're correct IMO that AVXL's run is currently affecting TPIV. Both are jbem777 picks from earlier in the year and many of the same traders are/were in both stocks. AVXL is sucking up most of the air in the trading room with those guys, the volume is impressive & it's close to turning into a parabolic frenzy. TPIV will have its day but for now it's slow & steady.