THE TICKER President Trump waves as he leaves a roundtable discussion on tax policy at a Boeing plant in St. Louis last month. (AP Photo/Evan Vucci) Tuesday should have been a banner day for Boeing’s stock. The White House announced that it is sending four top economic hands, led by Treasury Secretary Steven Mnuchin, to China next week in the hopes of negotiating a resolution to the escalating trade conflict that has rattled shares of the aerospace giant. And the administration named an acting head of the Export-Import Bank — the lending facility derided by conservative critics as the “Bank of Boeing” — that has been hobbled by vacancies since 2015. But the company’s shares slid nearly 4 percent amid a broader bloodbath for industrial stocks. The Dow Jones industrial average tumbled for the fifth consecutive day, its longest losing streak in more than a year, falling 600 points at one point before recovering slightly to … [Read more...] about The Finance 202: Boeing’s stock was the best bellwether of a trade war. Until yesterday.