Rate Limits

In order to prevent performance problems in our systems, there are two types of rate limits placed on the system. This section describes each of them:

At the request level, we limit the number of requests that can be made within a certain number of seconds.

Additionally, there is a daily limit on the amount of data that can be downloaded in a given 24 hour period. We measure the amount of data using a rough weighting factor that is loosely correlated to the number of records downloaded.

For example, a request to the ownership endpoint to retrieve the full ownership data of a security will have a weight that corresponds to the number of owners returned. If the call returns 100 owners, the weight will be 100.