Midday Movers

Here is a partial list of stocks moving on above-average volume:

• Stocks advancing on rising volume: JCOM, MDRX, LIFC, BMHC, LCAV, IRSG, QSII, VIVO, PTC, FDG

• Stocks declining on rising volume: MTCT, PNR, WOLF, TBL, TTWO, LXK, DD, SIE, NTRI, LM

Long ISRG, QSII, PNR, FDG