Proof Trading, Inc. is an institutional equities brokerage based in New York, founded in 2018. The company develops tools and platforms that aim to enhance market understanding and execution for investors. Its primary offerings include an institutional equities execution platform called Proof, which facilitates better pricing for trades, and Find My Fills, a tool that allows users to analyze specific stock executions against market trades. Additionally, Proof Trading provides educational resources such as the Market Structure Primer, which aids new employees in grasping the complexities of the U.S. equity trading landscape, and a Market Data Fee Calculator to help users visualize varying costs associated with different market data consumption patterns. Through these services, Proof Trading seeks to address inefficiencies in the finance sector and promote greater transparency in trading.