This is how an IPO greenshoe works

There is often confusion around the workings of the over-allotment option; there shouldn’t be.

It’s nearly the end of the year, so how about an alternative award?

Award category: Least-Understood-And-Yet-Easy-To-Understand-Capital-Markets-Thing

Winner: The Greenshoe

As the recent Aramco IPO has shown yet again, the greenshoe (or over-allotment option, to give it its proper name) still proves confusing to some. That’s surprising, because there’s not really a whole lot to grasp.

Underwriters routinely over-allocate IPOs, typically by 15%. They do this by short-selling the extra shares, borrowing them from some investors in order to allocate them to others. This

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