If your last name is Petersen, email david@petersen.com and I will set you up with an @petersen.com email address at no cost.

This is me.
This is my brother.

Here are a few of our projects.

BuildZoom is a better way to remodel.

Flexport is an operating system for global trade.

Import Genius has detailed data about every ocean container that enters the United States.

Disclosures.org has financial disclosures for many American politicians.

Room.com — soundproof office phone booths.

ContinuousBlood.com – forum to discuss CGM usage

AcneResearch.org — actionable steps based on analysis of hundreds of studies.

List of our investments