The mega deal that will create a transatlantic company with $320 billion under management began with a cup of coffee in London, says Dick Weil.

“It was just a get-to-know-you, a learning from your peers,” Weil — chief executive of Denver-Based Janus Capital Group Inc. (NYSE: JNS) — told the Denver Business Journal of his meeting with Andrew Formica, CEO of London-based Henderson Group Plc.

But the two CEOs of asset management firms found they shared similar challenges within the industry and ideas about how to tackle them.

Weil sent an email to his employees at midnight Sunday telling them of the proposed merger between Janus and Henderson Group, which Weil says should create more opportunities for employees and should not drastically affect the Denver operations.

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