Sprint (S) sees a modest spike and is up 5 cents to $2.84 midday after David Einhorn apparently made positive comments about the company at a value investing conference (Briefing). Overall options volume in Sprint so far is 22,000 contracts, which is much lighter than usual. However, the action is lopsided, as 17,000 calls and 4,660 puts traded on the stock. Recent trades include multi-exchange sweeps of Oct 3 calls at 8 and 9 cents. 11,275 now traded (74% Ask), as some investors seem to be looking for a rally beyond $3 in Sprint shares before the expiration, which represents a 6 percent jump over the next four days. The stock, which fell to 52-week lows of $2.22 a week ago, is already on a five-day 27 percent run higher. The company reported its best ever one day sales Friday on strong sales of iPhone 4s and iPhone 4.