Citadel Securities founder and CEO Ken Griffin said in an interview with Bloomberg that a number of his companies are negotiating an enterprise-wide license to use OpenAI's ChatGPT tool. Ken Griffin said, "This branch of technology has had a real impact on our business, ChatGPT has gone from helping developers write better code to translating software between languages to All kinds of information, all kinds of information.” ChatGPT might help create a stock portfolio, or speed up the production of analyst presentations. In contrast, a large number of Wall Street companies have suppressed ChatGPT. Banks including Bank of America, JPMorgan, Citigroup, Deutsche Bank, Goldman Sachs and Wells Fargo have imposed restrictions. Bank of America told employees to prohibit commercial use of ChatGPT and OpenAI, according to people familiar with the matter. Ken Griffin founded the hedge fund Citadel in 1990 and later Citadel Securities. Both companies achieved huge gains last year. Griffin's hedge fund Citadel netted more than $16 billion for clients last year, and Citadel Securities' revenue reached a record At $7.5 billion, Griffin has a net worth of more than $36 billion, according to the Bloomberg Billionaires Index.