Trade Desk Stock Slides 20% Over 10 Straight Down Days
A prolonged slide in the stock has pushed its valuation below peers, even as its growth remains ahead.
Trade Desk (TTD) stock has fallen 20% over a streak of 10 consecutive trading days. The move has erased about $1.4 billion from the company’s market value, which now stands at about $5.6 billion. For anyone holding the stock, this is a significant and persistent move against their position.
The stock now trades at about $12.05 a share as of 9/29/2026.
TTD Versus The S&P 500, Streak And Beyond
Here is how TTD stock stacks up against the S&P 500 over the streak and the periods around it:
| Return Period | TTD | S&P 500 |
|---|---|---|
| 1D | -2.4% | -0.2% |
| 10D (Current Streak) | -19.7% | 1.1% |
| 1M (21D) | -11.2% | -0.5% |
| 3M (63D) | -33.4% | 2.3% |
| YTD 2026 | -68.3% | 12.1% |
| 2025 | -67.7% | 16.4% |
| 2024 | 63.3% | 23.3% |
| 2023 | 60.5% | 24.2% |
What do the numbers say about this price?
The data shows a business whose fundamentals appear disconnected from the recent selling. The decline is the stock’s own, as the S&P 500 returned +1.1% over the same 10 trading days.
Revenue for Trade Desk over the last twelve months grew 11.6%, ahead of the 6.8% median for S&P 500 Communication Services stocks. The company’s price-to-earnings multiple of 13.9 is below the sector median of 17.0. Its operating margin of 19.6% is close to the median of 20.1%.
What does a streak like this actually mean?
A long streak is not an instruction to buy or sell. It is simply information. It tells you that momentum and market attention are focused on a stock, for reasons that are not always clear.
The disciplined response is to check the business against the new, lower price. The fundamental data here provides a starting point for that work, comparing the company’s growth and profitability against its current valuation.
If the drop has you weighing an entry, resist buying on price alone. Our Buy the Dip screen ranks the marked-down names where growth and cash generation still hold up.
A Slide Like This Is Why Diversification Exists
Watching one stock fall day after day is the clearest lesson the market teaches about single-name risk. Whether this particular decline is an opportunity or a warning, the deeper point is the same: no one name should be able to do this to your portfolio.
The Trefis High Quality (HQ) Portfolio is built on that principle: roughly 30 businesses selected for consistent cash generation, strong margins, and resilient balance sheets, sized and rebalanced with rules. It has a track record of outpacing a benchmark that combines the three major indices – the S&P 500, S&P Mid-cap, and Russell 2000. Study the slide; spread the risk.