on Friday, many Nasdaq stocks had Quadruple/Triple Witching Options Expiration, imo. that explains Friday's crazy volume and crazy price activities on many stocks. http://business.nasdaq.com/marketinsite/2017/TradeTalks-4-Things-to-Know-About-Quadruple-Witching-Options-Expiration.html that applies to NYSE stock & AMEX stocks as well. look at XXII - hit as low as $2.76 but closed at $3.21 w/ big volume. also DVAX hit as low as $20 but finished green at the end with insane volume.