Launch HN: OneChronos (YC S16) – Combinatorial auctions market for US equities

Hi HN—we're Kelly and Steve, co-founders of OneChronos ( https://www.onechronos.com ). OneChronos is a "Smart Market" for US equities—meaning we match counterparties using mathematical optimization instead of classical human auctioneer mechanics [1]. Our flavor of Smart Market—combinatorial auctions—lets users enter orders spanning multiple securities and specify matching preferences way beyond just price and quantity. We didn't invent Smart Markets or combinatorial auctions. Roughly $1T/year flows through them in industries ranging from display advertising to telecommunications. The underlying theory was the subject of the 2020 Nobel Prize in Economic Sciences [2]. We're bringing them to capital markets, and we have both the customers and the regulatory clearance to do so. Our initial user base contains the household names cumulatively responsible for ≈70% of US equities trading volume. Today's market structure costs institutional investors