Oil stocks sink FTSE 100 as Wall Street cheer runs out

(Reuters) - The UK's FTSE 100 gave up early gains and sunk to lows not seen since August 2016 as a dip in oil stocks on oversupply concerns overrode initial cheer from Wall Street where strong U.S. data had helped drive a dramatic rebound.The FTSE 100 was 0.5 percent lower by 0927 GMT after initially rising as much as 0.6 percent, while the FTSE 250 mid-cap index also pared initial gains to trade about flat.Both UK indexes initially gained on the back of record point surge on Wall Street on..