MTECHTIPS- Silver trading range for the day is 41957-44755. Silver prices ended with losses as investors locked in gains ahead of a key U.S. economic data at the end of the week. The number of Americans filing for unemployment benefits rose to near a three-month high last week. CME raises COMEX 5000 Silver futures maintenance margins by 10.5 percent to $5,800 per contract from $5,250 for Nov. and Dec. 2016. BUY SILVER DEC ON DROP @ 42800 SL 42480 TGT 43180-43450. MCX.