The Trade Desk: When a Compounder Cracks
For nearly a decade, The Trade Desk was the kind of stock investors pointed to when they wanted to argue that quality compounds. Revenue grew from $114 million in 2015 to $2.9 billion in 2025, roughly a twenty-five-fold increase across ten years. The company beat its own internal guidance for 33 consecutive quarters, an operational record that has almost no peer among public technology companies. Customer retention sat above 95% for twelve straight years. Adjusted EBITDA margins expanded from the high single digits in 2017 to over 40% by 2024. Free cash flow ran near 28% of revenue. The stock peaked at $141 in November 2024, and the market cap brushed $70 billion. Today the stock trades near $21. The market cap is under $10 billion. The chart looks like a building collapsed. What follows is an attempt to answer the question every investor I know is asking about this name: is this a generational buying opportunity in a wounded but durable franchise, or the slow recognition that the moat was always thinner than the multiple suggested? I have spent the better part of a week reading the 10-Ks going back to 2018, the earnings call transcripts from 2022 through Q1 2026, the trade press from AdExchanger and Digiday, the securities class action complaint, and Jeff Green’s own LinkedIn posts about the Publicis dispute. I think the answer is more interesting than either side of the consensus... Continue reading this post for free in the Substack app
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