Compounder

FOR EVERYDAY INVESTORS

Stock news that knows why you own it.

Tell us the reason you own each stock. Every morning, our AI reads the news and emails you a short brief — only the stories that actually affect your reasons, without the noise.

Invite-only beta · 20 thoughtful investors

The problem with stock news

You get dozens of articles a day, and almost none of them know why you own the stock.
When your stock drops 10%, the hardest question is the simplest one: did my reason for buying break — or is this just noise? Most people guess.

Compounder answers both. Write down why you own each stock, and every morning our AI sends you only the news that touches your reasons — and whether your logic still holds.

How it works

01Write why you own it
Add up to 3 stocks and write down your reason for owning each one — like “I own TSLA because full-self-driving is about to work.”
02Let the signal find you
Every night we read the day's news and ask one question: is this material to your reason for owning it?
03Know why it matters
Material updates land in your inbox each morning — with a plain-English explanation of what changed and why it matters to your reason for owning it.

This is what the brief looks like

Sample morning digest email

A real brief from a real morning — every story tied to the reason for owning the stock, ranked by how much it matters.

Get an invite — join the beta

What it's not

Not another ticker alert firehose. Not analyst price targets. Not financial advice. Just a check on whether your original reason for buying still holds.