Bloomberg After falling for three months, the dollar is set to rebound, if this historical seasonal chart is any guide. The Bloomberg Dollar Spot Index, which tracks the greenback versus 10 peers, has appreciated in May in every year but one since 2007, according to a Bloomberg Seasonality Chart. That’s the best record among the 12 months. Analysts’ theories …

  San Francisco / AFP US oil services companies Halliburton and Baker Hughes announced they were calling off their massive multibillion-dollar proposed merger that had met strong resistance from regulators. The deal, announced in November 2014, foresaw a $34.6 billion takeover by Halliburton of its rival, creating a powerful competitor to global industry leader Schlumberger. “Challenges in obtaining remaining regulatory approvals …

  Bloomberg Puerto Rico will default on a $422 million bond payment for its Government Development Bank, escalating what is turning into the biggest crisis ever in the $3.7 trillion market that U.S. state and local entities use to access financing. Governor Alejandro Garcia Padilla invoked a debt moratorium law approved last month, saying during a televised address that the …