VIX And A Blog By: TalkMarkets February 21, 2018 at 14:48 PM EST With extreme volatility, the spike is rarer but much more of a buy signal. Read More >> Related Stocks: Compugen Ltd Cosan Ltd Ecopetrol S.A. ADR Gsk Plc ADR Novo Nordisk A/S ADR Orocobre Ltd Roche Holding AG Basel American Depositary Shares Shire Plc Ads Teva Pharmaceutical Industries ADR Tomra Systems A/S/A ADR Virgin Money Holdings [Uk] Plc Zymeworks Inc