Midday Gainers / Losers Mar. 24, 2017 12:49 PM ET Gainers: HTGM +204%. ZAIS +44%. GBR +25%. CBIO +21%. VLTC +19%. RGLS +18%. COGT +17%. PLSE +15%. BCOV +15%. FUEL +14%. Losers: XENE -53%. MDGS -27%. FINL -18%. VNCE -14%. GME -12%. ROSG -10%. SPWH -10%. COLL -10%. ITUS -10%. USCR -10%