Broker with Trading API for for Hedge fund

Hi, I am working with a enterprise client, who has big daily turnover. They are looking for a broker who has good service and Trading API. Can you please recommend any?
Zerodha has a limit of 3 API calls per second, which doesn't work for us.

- Abhijeet


Well-Known Member
if you are really looking for robust solution here, then any retail buy APIs have one or other sets of limitations wrapped around, then only serious choice will be become a TM yourself and opt for FIX API based trading with colocated servers if you are looking for sub millisecond latency challenges based thought put systems

Zerodha – Open Paperless Account

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Are you a day trader?