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Not for most of the past decade, certainly.

Assuming he means his firm, not himself personally...

Approximately 100 companies have gone IPO this year in the US. And almost 400 in China. Don't know about the rest of the world.

4 filed != gone public yet :)

I'd say probably only 10% of companies I hear about that are "getting ready to IPO" actually do it given the hurdles to making it happen.

That said, if this were true, it's got to be primarily driven by his/her cleantech investments.