REUTERS - Jan 6 - Short sellers have been having trouble committing to Match Group. Match's stock has fallen 8% from the close of its first day of trading on Nov. 19, but following over a month of volatile trading, it is still up 13% from the $12 per share price set by underwriters in its IPO. Traders are betting Match would fall further and join other freshly listed stocks struggling to keep stock prices above their IPO levels. Short sellers borrow shares and then sell them, hoping to repurchase them at a lower price and then return them to their owner. In the meantime, they must also pay interest to the owner.