WDWB - What Did Whales Buy?

Introduction

Around winter, while talking with a friend, the topic of stocks came up, and when quantum computers were mentioned, my friend said they bought them just because they were hot. I advised against it, saying it was a ridiculous investment, but my friend, perhaps experiencing FOMO, didn't listen. For friends like these, I created this with the idea that if you're going to follow something, you might as well follow the investments of great figures.

HOW?

The U.S. Securities and Exchange Commission (SEC) has a report called 13F. This report must be submitted quarterly if you are investing above a certain amount. Of course, it's not perfect. If it's determined that disclosing the transaction records of buying or selling these stocks to the SEC could impact the stock market, a confidentiality request can be made. Therefore, it's not perfect, but I thought there was no place more accurate than this.

Tech stack

Front

next.js

• Aiming to increase search traffic through SEO.

tailwind

• A front-end colleague is familiar with it. Also, it's more suitable for SSR than CSS-in-JS.

back

go

• Plan to calculate ranks on the fly without storing them separately (as ranks can change if viewed on different dates).

  • Faster calculations than node.js (using goroutines for multithreading).

fiber - web framework

• Uses fastHTTP for very fast response times.

• Chosen because it has an interface similar to Express, making it easy to adapt, and most operations will be

infra

aws

• Familiar with it.

• Let's take advantage of the free tier.

github action

• GOAT

Docker

• GOAT

You can check the code of our web site in this github organization