IEX Exchange is a U.S.-based stock exchange that facilitates the trading of equities through a transparent business model and innovative technology. Established to enhance market integrity and protect investors, IEX employs unique mechanisms like the "Speed Bump"—a 38-mile coil of optical fiber introducing a 350-microsecond delay—to level the playing field among traders. This design aims to mitigate the advantages of high-frequency trading and ensure fairer execution for all participants. Key Features and Functionality: - Speed Bump: A deliberate delay mechanism that prevents latency arbitrage, promoting equitable trading conditions. - The Signal: A machine learning-based formula that identifies moments of price instability, incorporated into order types to protect trades during volatile periods. - Discretionary Peg Order Type (D-Peg): An order type that rests outside the National Best Bid and Offer (NBBO) and steps to the midpoint, except when The Signal indicates price instability. - Market Data Feeds: Proprietary feeds like TOPS and DEEP provide real-time top-of-book quotations and depth-of-book data, ensuring transparency and informed decision-making. Primary Value and User Solutions: IEX Exchange addresses the challenges posed by high-frequency trading by implementing technologies that promote fairness and transparency. By introducing mechanisms like the Speed Bump and The Signal, IEX reduces the risk of predatory trading practices, ensuring that all market participants, from institutional investors to individual traders, operate on a level playing field. This approach enhances execution quality, fosters trust in the trading environment, and ultimately contributes to a more efficient and equitable financial market.