* British PM May battles to save Brexit deal and her job
* Wall St opens lower following mixed earnings reports
* Oil gains despite potential supply glut on the horizon
* U.S. Treasury prices up on safe-haven bid
By Lewis Krauskopf
NEW YORK, Nov 15 (Reuters) - Sterling tumbled on Thursday and a gauge of global stocks declined for a sixth straight session as political developments in Britain rippled through currency, bond and equity markets.
Wall Street's main stock indexes opened lower after mixed corporate earnings. Oil prices rose as they continued to recoup some losses form a recent steep plunge.
In Britain, Prime Minister Theresa May battled to save a draft divorce deal with the European Union after her Brexit secretary and other ministers quit in protest and lawmakers stepped up efforts to topple her. GBP= was last trading at $1.2765, down 1.76 percent on the day, and also fell steeply against the euro.
The pan-European STOXX 600 index .STOXX lost 1.62 percent, while Britain's FTSE 250 .FTMC dropped 2.0 percent.
"Risk appetite has taken a hit across the board, as this breakdown comes just as Italy ramps up its standoff with Brussels, and investors continue to fret that the great boom in tech earnings has come to an end," said Chris Beauchamp, chief market analyst at IG.
On Wall Street, the Dow Jones Industrial Average .DJI fell 257.38 points, or 1.03 percent, to 24,823.12, the S&P 500 .SPX lost 25.3 points, or 0.94 percent, to 2,676.28 and the Nasdaq Composite .IXIC dropped 44.31 points, or 0.62 percent, to 7,092.08. in Walmart (NYSE:WMT) Inc WMT.N fell 1.8 percent after the retailer's earnings report. gauge of stocks across the globe .MIWD00000PUS shed 0.60 percent, falling for a sixth straight session.
The dollar index .DXY , which measures the greenback against a basket of currencies, rose 0.33 percent, with the euro EUR= up 0.04 percent to $1.1312.
U.S. retail sales rebounded sharply in October as purchases of motor vehicles and building materials surged, likely driven by recovery efforts in areas devastated by Hurricane Florence. Treasury prices rose, sending yields to two-week lows across the curve, as concerns about a weak stock market and Britain's exit from the European Union prompted investors to seek the safety of government bonds. U.S. 10-year notes US10YT=RR last rose 10/32 in price to yield 3.0848 percent, from 3.12 percent late on Wednesday.
Nerves among Britain government bond investors forced the country's debt agency to accept low-ball bids for a 20-year bond at auction. rose, steadying after steep recent declines, though concern about the prospect of an oversupplied market next year continued to weigh on prices despite OPEC's message that it may cut crude output. crude CLcv1 rose 1.1 percent to $56.87 per barrel and Brent LCOcv1 was last at $67.04, up 1.39 percent on the day.
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