The FINRA database available to regulators is an amazing engineering achievement. It knows all and is how the SEC is able to “replay” the markets after the fact

The FINRA database available to regulators is an amazing engineering achievement. It knows all and is how the SEC is able to “replay” the markets after the fact. Four year old blog post, but gives a sense of scale: https://aws.amazon.com/blogs/publicsector/analytics-without-limits-finras-scalable-and-secure-big-data-architecture-part-1/ https://aws.amazon.com/blogs/publicsector/analytics-without-...