Rocket Lab Stock Slides 19% Over 7 Straight Down Days
A seven-day slide has erased a significant slice of the company’s value, raising questions about the business beneath the stock chart.
Rocket Lab (RKLB) stock has now moved lower for 7 consecutive trading days, a 19.4% slide that sharply decoupled from the broader market as the S&P 500 fell just 0.9% over the same stretch. The retreat trimmed roughly $10 billion in market value, bringing the company’s valuation down to around $40 billion and putting its core operating model under scrutiny.
For anyone holding the stock, it is a sharp and sustained move that stands apart from the broader market’s performance.
RKLB Versus The S&P 500, Streak And Beyond
Here is how RKLB stock stacks up against the S&P 500 over the streak and the periods around it:
| Return Period | RKLB | S&P 500 |
|---|---|---|
| 1D | -1.1% | -0.0% |
| 7D (Current Streak) | -19.4% | -0.9% |
| 1M (21D) | 3.6% | 3.3% |
| 3M (63D) | -55.9% | 2.1% |
| YTD 2026 | -5.1% | 12.1% |
| 2025 | 173.9% | 16.4% |
| 2024 | 360.6% | 23.3% |
| 2023 | 46.7% | 24.2% |
A slide like this always poses the same follow-up: which marked-down stocks are actually worth buying? Our Buy the Dip screen runs that test every day, flagging beaten-down names whose fundamentals still hold up.
And for anyone who would rather back the theme than one company’s story, an aerospace & defense ETF like MISL holds the sector rather than this one name. It is still a concentrated bet on that one theme, though, which is exactly the gap the portfolio below closes.
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