The company's broker headcount declined slightly, but it remains the largest wirehouse by number of advisors.

The firm's advisor ranks increased slightly during the third quarter, ending three consecutive periods of decline.

The bank is testing several trading and investing platforms and will be talking about "what might or might not work," CEO Jamie Dimon said during its third-quarter earnings call.

Adviser headcount continued a slow, but steady decline, slipping to 6,915 from 7,116 for the year-ago period.

CEO Dan Arnold said advisers’ uncertainty about the fiduciary rule is waning.

"This is a challenging time for the firm with the DoL rule," CEO Paul Reilly said.

The rule has cost the firm tens of millions of dollars in compliance and lost revenue.

Second-quarter revenue from brokerage services fell 3% year-over-year while assets under management jumped 26% to $14.8 billion.

The Buffalo-based institution generated $127 million in second-quarter revenue from trust services, up 5% year-over-year.

Rising markets boosted revenues for wealth- and asset-management arms at the largest U.S. banks to $18.4 billion in the second quarter, according to data compiled by Bloomberg.