Schering Plough (SGP) shares are up 74 cents to $17.06 and options volume is running at 5X the average daily . There is no obvious news to explain the relative strength in shares of the pharmaceutical company. The co. announced yesterday that it will be presenting at a Barclay’s Healthcare Conference Mar 10 around 2:00ET. In the options market, sentiment seems bullish, with 35,000 calls and 16,000 puts traded. The top trades of the day appear to be put writes, with 3000 Jan 12.5 puts traded on the bid for $1.3 and 2500 Mar 20 puts on the bid for $3.60. Mar and Apr 17.5 calls are the most actives, with about 59 percent of today’s 23K contracts trading ask-side.