GTX Inc (GTXI, news, chart) is seeing four times the normal trading volume ahead of a presentation at the Newsmakers in the Biotech Industry Conference Thursdaay morning. Sentiment seems bullish. GTXI is trading up 85 cents to $18.56 and 4,800 calls have traded, compared to just 106 puts. The November 22.5 calls are the most actives. 3,200 contracts traded, with 60 percent trading on the offer. Implied volatility is up nearly 10 percent, as it appears that some players are positioning for an upside move in GTXI shares.