Might not. Caching plus nginx would allow pretty decent performance. Not sure how expensive misses would be.

The entire public sec.gov site, including filing data, is served from the Akamai CDN.

But there is also an AUP (https://www.sec.gov/os/accessing-edgar-data) which limits the number of requests per second, which in reality is quite a bit less than is documented.

Vs push where someone sets up to receive it and then… never turns it off?