Bullish sentiment is building in DryShips (DRYS) ahead of earnings. Shares are up 16 cents to $3.25 and on a five-day 25.6 percent winning run higher. Options volume in the dry bulk shipper includes about 10,000 calls and 3,000 puts so far. Sep 3.5 calls, which are now 7.7 percent OTM and expiring in 17 days, are the most ctives. 1,711 traded. Sep 3, Sep 4, and Oct 4 calls are seeing interest as well. Implied volatility is up about 1.5 percent to 81.5 ahead of the results, due after the closing bell today.