Open marketplace
Augment
One of the original pre-IPO secondary marketplaces, formerly known as SharesPost.
Typical minimum
Varies by listing
Best for
Investors who want access to one of the longest-running platforms in this category.
About Augment
Augment traces its roots to SharesPost, one of the earliest platforms built specifically to match buyers and sellers of pre-IPO company shares, dating back to the early 2010s. The brand has since evolved and rebranded as Augment.
As one of the longer-running names in this space, it has been through multiple market cycles — including the years when pre-IPO secondary trading was a much smaller, more informal category than it is today.
How it works
Augment functions as a marketplace connecting individual and institutional buyers with sellers of shares in private, typically later-stage companies, following the same general pattern as other open marketplaces on this list: browse listings, commit capital, close through a fund vehicle or direct transfer depending on the deal.
Every platform in this directory requires accredited investor status, and every listing carries the same underlying risks: limited information rights, no board access, and illiquidity that can last years. None of this is investment advice — verify current fees, minimums, and available listings directly on the platform, and treat any specific opportunity with the same diligence you'd apply to a primary investment.