Transocean Ltd.'s stock , which tacked on 0.8% in morning trade Thursday, was currently the best performer within the S&P 500 in the month since Donald Trump was elected president. The oil services company's stock has rocketed 49% since Nov. 8, compared with a 23% jump in the PHLX Oil Service Index and a 4.8% gain in the S&P 500. Among the next biggest post-election gainers within the S&P 500, Chesapeake Energy's stock has shot up 42%, United Rentals Inc. shares have climbed 41% and shares of Bank of America Corp. have run up 34%. Investors appear to be banking on Trump's policy plans to boost infrastructure spending, help revive the fossil fuel industry and cut regulations. The biggest loser was TripAdvisor Inc.'s stock , which has plunged 24% in the last month, followed by Medtronic PLC shares , which have slumped 15%.
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