Investors spooked by the implosion of auto lender Tricolor Holdings and car-parts supplier First Brands Group got little reassurance Tuesday from the head of the biggest US bank. Most Read from Bloomberg “My antenna goes up when things like that happen,” Jamie Dimon, JPMorgan Chase & Co.’s chief executive officer, said on a call with analysts. “I probably shouldn’t say this, but when you see one cockroach, there are probably more. Everyone should be forewarned on this one.” The pair of bankruptcies were ...