Highest gross margin (%) among #stocks $SPX $SPY 1.  VEIV HOLDINGS, LLC $V: 161.9 2.  FIBROGEN, INC. $FGEN: 99.2 3.  AGIOS PHARMACEUTICAL. $AGIO: 99.1 4.  NEUROCRINE BIOSCIENC. $NBIX: 99.0 5.  GLOBAL BLOOD THERAPE. $GBT: 98.9 United States United States United States United States United States