Inside Citigroup’s attempt to rally Wall Street to pressure gun sellers

In 2018, after a 19-year-old killed 17 students and staff at a high school in Parkland, Fla. Citigroup Told retailers not to want their own business if they sold guns to people under the age of 21.

The bank will not lend them or keep their deposits. It will not advise them on mergers, bond sales or stock offerings. Citigroup, its executives hoped, would be the first of many to mobilize Wall Street around a plan to stop gun violence.