BUZZ-BP PLC: On track for biggest gain since Jan; may still be undervalued

**BP Plc U.S.-listed shares on track for their biggest daily percentage gain since Jan. 16, following news of its settlement to resolve claims from its Gulf of Mexico oil spill five years ago, though shares may still be undervalued

** Shares (Berlin: DI6.BE - news) shoot 5.7-pct higher to $41.52 intraday high

** According to Thomson Reuters StarMine estimates, stock's intrinsic value is $61.61, about 50 pct higher than current price; Trades 14.9x NTM P/E compared with 17x for Exxon Mobil (Swiss: XOM.SW - news) and 17.4x for the S&P 500

** Starmine projects Exxon's intrinsic value to be $80.95 versus stock's current $83 price

** A roughly 5 pct stock move adds about $5.8 bln to BP's market cap, which is currently about $125 bln, but still below $170 bln level before the April 2010 oil spill

** By comparison, Exxon's market cap has increased since April 2010 to $348 billion from $316 billion. Chevron Corp's market cap also gained, from $152 billlion in April 2010 to $181 billion, S&P-Dow Jones Indices data shows

** Chevron's shares down 0.1 pct Thursday, while Exxon's shares were up 0.9 pct. S&P 500 energy index up 0.6 pct