FIX API
Exchange FIX Rate Limits
Order Entry Limits
FIX 4.2
The FIX 4.2 Order Entry API rate limits are:
50
requests per rolling second1 per session100
messages per second in bursts
Rolling second
The clock starts when the first command is sent. We use a lazy-fill token bucket implementation.
FIX 5
The FIX 5 Order Entry API rate limits are:
2
logons per second per API key100
requests per second
Your FIX 5 session is disconnected if your messages exceed 200
messages per second
Maximums
- Maximum connections per profile:
75
. See FIX Best Practices. - Maximum connections per user across all profiles:
175
- Maximum API keys per session/connection:
1
- Maximum profiles per user:
100
- Maximum orders per batch message (new and cancelled):
15
Market Data Limits
The FIX Market Data API is limited to 1
connection per API key. It does not use FIX order entry rate limits (connections, rps, burst rps).