Cisco Systems (CSCO) adds 30 cents to $24.12 and CSCO calls are among the most actives Wednesday (In Flow Monitor, @all and then 4.) The tone of overall trading seems somewhat bullish and includes a sweep of 12,262 Aug 24 calls at the 58-cent ask. Almost 36K now traded. Meanwhile, Aug 23 puts saw two large sweeps, of 10,812 and 9,477 contracts, on the 30-cent bid. Sep and Oct 24 calls are seeing heavy trading as well. Implied volatility has moved up 3.5 percent to 30 ahead of earnings, one week from today.