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#slippage

2 stories

Banner: decentralized exchange swap reverting because output fell below the minimum

Crypto Trading Systems Bug Report

DEX swaps reverting with Too little received: stale quotes, slippage bounds and deadlines

Ryan Pham · May 13, 2026 · 6 min read

Our treasury rebalancing service swapped on a DEX and about a quarter of swaps reverted on volatile days with Too little received, wasting gas. Quotes were computed seconds before submission and transactions waited in the mempool. Fresh quotes, simulation and a deadline fixed it without loosening slippage.

Banner: gaps between paper trading results and live execution in real markets

Crypto Trading Systems

Why paper trading results do not survive live execution

Ryan Pham · Nov 13, 2025 · 5 min read

Paper trading usually fills every order instantly at the price you asked for. Real markets do not: there is slippage, partial fills, queue position, fees, latency and market impact. This guide explains each gap, how to measure it from live data and how to model it in simulation.