Silver Wheaton (SLW, news, chart) is seeing bullish order flow, with total volume in the options market running six times the usual. Shares of the Vancouver based silver company are up 17 cents to $14.81 and 21,674 of the September 15 calls have traded, with 63 percent of today’s volume on the offerside. Open interest in those calls is 9,575, which uggests that today’s activity probably involves some opening buy orders. The September 17.5 and August 15 calls are also seeing action. No news on the stock today. Silver is up .05 to $17.425 an ounce.