--- title: "Spread Alerts" id: product/spread-alerts section: product canonical: https://umbrafeed.com/en/products#spread-alerts publisher: Umbra updated: 2026-08-31 --- # Spread Alerts Cross-exchange spread detection in real time The Spread service monitors price differences for the same asset across multiple exchanges simultaneously. When a token trades at $100 on Exchange A and $105 on Exchange B, that 5% gap is a spread, and Umbra detects it the instant it appears. ### How it works Umbra connects to the orderbook feeds of seven centralized exchanges and multiple DEX chains via persistent WebSocket connections. Every price update is cross-referenced against every other venue monitoring the same pair. When the spread between any two venues exceeds your configured threshold, an alert fires in under 5 milliseconds. No polling. No delay. The alert includes the buy venue, sell venue, current prices, spread percentage, and the direction (buy/sell) for the trade. ### Technical detail Spread detection runs on a streaming architecture. Each price update triggers a pairwise comparison across all venues where the token is listed. For a token listed on 5 exchanges, that's 10 unique pair comparisons per price tick. Umbra handles this at scale across 5,000+ trading pairs without introducing latency. Alerts are deduplicated, so you won't get the same spread alert twice unless the spread widens further or resets. ### Features - **7 Spread Types** — F/F — Futures/Futures, F/D — Futures/Dex, F/S — Futures/Spot, F/FP — Futures/Fair Price, S/D — Spot/Dex, S/S — Spot/Spot, and D/D — Dex/Dex. Each type captures a different market structure. - **Directional Alerts** — Every alert tells you exactly where to buy and where to sell. No ambiguity, no mental math. - **Per-Exchange Volume Filters** — Filter out low-volume pairs to avoid spreads that look good on paper but can't be executed at size. - **DEX Liquidity Filters** — Set minimum pool liquidity thresholds to ensure DEX-side spreads are actually executable. ### Use cases - **Basis Trading** — Buy spot on one exchange, sell futures on another to observe the basis spread in a market-neutral configuration. Common on BTC and ETH when funding rates diverge. Execution cost, slippage and counterparty risk can erase the observed spread — informational content, not an outcome. - **CEX-DEX Arbitrage** — DEX pool prices lag during volatile moves. Buy on Uniswap, sell on Binance futures, or the reverse. Umbra detects these gaps across four chains. - **Cross-Exchange Spot Arbitrage** — The same token at different prices on two spot exchanges. Observing and acting on such spreads depends on transfer times, fees, liquidity and execution — Umbra provides the informational alert, not a guarantee of outcome. ### Configurable options - Minimum spread threshold (global, default 5%) - Per-exchange volume minimums (spot & futures) - DEX liquidity floor - Token blacklist - Direction filter (buy/sell) - Spread type selection - Telegram delivery toggle ### FAQ **What's a realistic spread to target?** For major pairs (BTC, ETH), basis spreads of 0.3-1% between spot and futures are common during volatile periods. For altcoins, cross-exchange spot spreads of 5-15% appear daily. The default threshold is 5%, which filters noise while catching actionable opportunities. **Does Umbra execute the trades for me?** No. Umbra is a monitoring platform. We surface the observed spread through a sub-second event pipeline; execution remains entirely up to you. Umbra never needs exchange-account API keys and never touches your funds. **How do I know the spread is still there when I act?** Spreads are time-sensitive and market conditions change continuously. Umbra provides the observation quickly, but its duration and any execution depend on user-specific factors such as account funding, exchange latency and liquidity. No outcome is guaranteed. --- Source: https://umbrafeed.com/en/products#spread-alerts (Umbra, reviewed 2026-08-31). Umbra publishes read-only market monitoring and data; it holds no funds, connects to no exchange accounts and places no orders, and nothing here is investment advice.