Futures Contract Symbol Regex for JavaScript

What this pattern does

This page provides a well-structured, multi-part regular expression for matching futures contract symbol, ported and verified for JavaScript. Financial data validation has zero tolerance for false negatives — a missed invalid entry can corrupt downstream calculations. The snippet below is ready to drop into your JavaScript project — whether you're validating in an Express middleware, a Next.js API route, or a client-side form.

Javascript Implementation

// Futures Contract Symbol
// ReDoS-safe | RegexVault — Finance > Securities & Trading

const futuresContractSymbolRegex = /^[A-Z0-9]{1,2}[FGHJKMNQUVXZ][0-9]{2}$/;

function validateFuturesContractSymbol(input: string): boolean {
  return futuresContractSymbolRegex.test(input);
}

// Example
console.log(validateFuturesContractSymbol("ESZ24")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Finance > Securities & Trading category and carries a ReDoS-safe certification. That matters for JavaScript developers because especially critical in long-running Node.js event loops where a ReDoS vulnerability can block the entire process. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Month codes: F=Jan, G=Feb, H=Mar, J=Apr, K=May, M=Jun, N=Jul, Q=Aug, U=Sep, V=Oct, X=Nov, Z=Dec. Common roots: ES=S&P 500, CL=Crude Oil, GC=Gold, NQ=Nasdaq 100.