The Dutch Investors #87 | Misunderstood Quality & First Principles | Interview w/ Aria Radnia
Apr 3, 2026
Aria Radnia, a young investor and content creator who researches quality, misunderstood companies, shares his journey into investing. He discusses concentrated portfolios, first-principles analysis, and why some high-quality firms are wrongly priced. Conversations cover Adobe, Uber and AV risks, community-driven psychology, and practical habits to avoid impulsive trading.
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Early Gambling Trades That Shaped His Process
- Aria learned investing the hard way by gambling early trades and seeing his portfolio stay red for 18 months.
- He bought AMD first, sold for a quick 10% gain, then held Tesla through a 75% drop, which taught him to value fundamentals over vibes.
Toilet Paper Experiment To Learn Shopify
- Aria ran a toilet paper Shopify experiment to learn the business firsthand and test selling online.
- The trial costs $1 and taught him about shipping costs, margins, and Shopify's merchant experience.
When Fundamentals And Sentiment Diverge
- Misunderstood quality stocks occur when fundamentals and market sentiment diverge widely.
- Aria points to Adobe trading at ~10x EBIT while revenue growth re-accelerated, forcing either fundamentals or valuation to adjust.
