Clearwire (CLWR, news, chart) is seeing six times normal trading volume after a player stepped in to buy 5,000 December 15 calls for 40 cents a contract. CLWR is down 36 cents to $10.02. With open interest of 7,124, the volume is perhaps closing trades. Yesterday, Unstrung reported that Clearwire is on track to close the deal to acquire Sprint Nextel (S) WiMax assets and a badly needed $3.2 billion investment before the year end, sometime in the fourth quarter. CLWR is down 53 cents to $9.85 today and not too far from a July 22nd 52-week low of $8.98 a share.