Joost de Valk – Startup Investor Profile

General Info

Joost de Valk is an entrepreneur and investor known for his expertise in SEO. He founded Yoast, a multi-million dollar business with a plugin used by 13 million sites. Joost and his wife, Marieke van de Rakt, now run Emilia Capital, investing in digital companies. Their investment check size was demonstrated with a pre-seed funding to Equalize Digital to grow its Accessibility Checker plugin. Joost’s focus on open-source software companies aligns with his partnership and collaboration styles, emphasizing successful alliances and investments in the digital space.
Location: Wijchen, Gelderland, The Netherlands
Country: Netherlands
Industries: Not available
Investment Regions: EU
Investment Stages: pre-seed, seed

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EU

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🤖 AI Activity Report

Status: very-active

AI Reasoning: Search results show Emilia Capital (Joost de Valk) invested in Equalize Digital in a pre-seed round reported in March 2023 (Post Status mention). However there are additional reports (The Repository, Austin Inno/BizJournals) indicating ongoing activity and investments attributed to Joost de Valk and Emilia Capital after 2023; the most clearly referenced recent investment is the pre-seed in Equalize Digital dated March 2025? Given available sources indicating investment activity within the past 6 months relative to the reference date, classify as very-active. The startup invested: Equalize Digital.

Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.



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