Next to its majority stake in Yoast BV, Altha holds a few other, minority, investments. The companies Altha holds investments in :
- Peerby
Peer-to-peer lending. - Student.com
An online student accommodation marketplace. Joost is also an SEO & Growth advisor at Student.com. - WordProof
WordProof helps improve the safety of the web by allowing the timestamping of content on the blockchain. See news article.