Mr Kirk’s initial comments about climate change – in which he also said there was “also some nut job telling me about the end of the world – surprised many in the finance sector as they were out of step with an industry that is keen to burnish its green credentials.
In a slide accompanying his speech at the conference earlier this year, he wrote that “unsubstantiated, shrill, partisan, self-serving, apocalyptic warnings are ALWAYS wrong.”
Mr Kirk said that since his suspension “tens of thousands of people, from chief executives and congressmen to scientists and mom and pop investors — who contacted me from around the world offering their support and solidarity over the past two months.
“You have given me strength during what has been a tumultuous time for me and my family,” he wrote.
In his LinkedIn post on Thursday, he said he has now gathered a “crack group of like-minded individuals together to deliver what is arguably the greatest sustainable investment idea ever conceived”.
He claimed that the project, which he will launch later this year, will “underline the central argument in my speech”. In his LinkedIn bio he added that he “actually loves Miami”.
HSBC declined to comment.