FIX Rate Limits Overview

FIX 5.0

• 2 logons per second per API key
• 100 requests per second

Your FIX 5 session is disconnected if your messages exceed 200 messages per second

FIX Maximums

• Maximum API keys per session/connection: 1
• Maximum connections per profile: 75. See FIX Best Practices.
• Maximum connections per user across all profiles: 175
• Maximum profiles per user: 100
• Maximum orders per batch message (new and cancelled): 15

How Rate Limits Work

Rate-limiting for FIX API uses a fixed window implementation.