Binance Introduces Spot Price Guardrails in Post-Crash Overhaul

Binance on Tuesday announced a Spot Price Range Execution Rule (PRER) that will restrict order execution to dynamic price bands and automatically expire all taker orders with execution prices outside a specified range. The rule takes effect on April 14 with a gradual rollout across spot trading pairs.

The mechanism allows orders to execute only within dynamic price bands set around a reference price derived from recent trades, the exchange said. Unlike stop-loss or limit orders set by individual users, PRER is an exchange-level market protection mechanism applied during order matching — functionally analogous to circuit breakers on traditional stock exchanges.

The rule comes six months after the 10/10 crash, when crypto markets suffered their largest single-day liquidation event on record. The event wiped out over $19 billion in leveraged positions within 24 hours, impacting more than 1.6 million traders, triggered by President Trump's threat of a 100% tariff on Chinese tech imports.

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