Settlement talks between JPMorgan Chase and federal and state negotiators have reportedly focused on a possible $11 billion to resolve a string of investigations into the bank’s mortgage lending and securitization practices. The amount under negotiation has ballooned from JPMorgan’s initial offer of $3 billion to $4 billion, which negotiators rejected. The talks cover federal probes in Philadelphia, Washington and Sacramento. The Department of Justice, Department of Housing and Urban Development and New York Attorney General Eric Schneiderman, who co-chairs a presidential task force investigating bank securitization deals, are involved...