Despite President Donald Trump's repeated assertions that he might support breaking up big banks, Wall Street isn't worried. Yet.

The calm is fueled by signals from administration aides in private meetings with industry executives to discuss rolling back financial rules, a Trump priority. While not making any assurances, the officials aren't harping on the issue, according to people who have participated in or been briefed on the discussions. In fact, the topic of reviving Glass-Steagall, the 1933 law separating investment and commercial banking, rarely comes up.

Just last month, Trump's top economic adviser Gary Cohn eased the concerns of at least two bank CEOs who called him after he spoke approvingly of Glass-Steagall in a meeting with senators, people familiar with the matter said. Neither Cohn nor the Treasury Department's Craig Phillips made a case for splitting up banks when they met recently with an important financial lobbying group, some attendees said.