In institutional trading, before an order is formally committed to an Order Management System (OMS), market participants engage in pre-trade liquidity discovery. When an asset manager needs to execute a large block or when a broker-dealer accumulates substantial inventory from client facilitations, neither party wants to post aggressive limit orders on public exchanges. Displaying massive size in lit order books induces adverse market selection, widens bid-ask spreads, and allows high-frequency algorithms to front-run the position. To discover hidden counter-interest, desks utilize Indications of Interest (IOIs) and Axe Sheets.
An Indication of Interest is a non-binding electronic message broadcast by a broker-dealer expressing a willingness to buy or sell a specified security, size category, and price range. Unlike a firm quote, an IOI does not create a legally binding obligation to trade upon acceptance. Instead, it serves as an invitation to negotiate. An 'Axe', on the other hand, is a specialized, high-conviction subset of an IOI. When a broker is 'axed' in a security, the firm has an urgent, asymmetric desire to trade because it holds unwanted physical inventory on its balance sheet or has captured a large, resting client care order seeking matching liquidity.
Axe sheets aggregate these inventory imbalances across the dealer's trading desks. Every morning before market open, and continuously throughout the trading day, sales traders distribute axe sheets electronically to target buy-side clients via Bloomberg BMAP/AXE screens, Autex, and direct FIX IOI feeds. If a buy-side desk's staging system detects an axe that aligns with an unexecuted internal portfolio model, the buy-side trader can interact with the dealer to cross the block at the midpoint, achieving zero market impact and minimal transaction cost.
At Atlantic Horizon Securities, the market-making and sales trading franchise generates dynamic axe sheets across 1,800 European and US equities. When Atlantic Horizon facilitates an institutional block, the internal inventory position is immediately flagged on the central risk blotter as an active axe to be matched against natural institutional order flow.