David Hunt, chief executive officer of PGIM, Prudential Financial Inc.’s $1 trillion asset manager, cautioned against overreacting to the surge in oil prices as OPEC clinched a deal to curtail supply. “For us who are long-term investors, we tend to look at the group of people who are gathering in Vienna and say ‘they’re fighting against history,’ ” Hunt said Wednesday in a Bloomberg Television interview . “The costs of producing crude, largely due to fracking technology, has dramatically changed the marginal economics of oil.” Brent crude jumped 8.2 percent to $50.19 at 4:19 p.m. in London as the Organization of Petroleum Exporting Countries’ three biggest producers — Saudi Arabia, Iraq and Iran — resolved differences over sharing the burden of cuts to rein in supply for the first time since 2008. Still, it trades for less than half the price […]