ACHR vs RKLB: Correlation
Measured on weekly returns over the past three years, Archer Aviation Inc. (ACHR) and Rocket Lab Corporation (RKLB) carry a correlation of 0.57, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACHR and RKLB?
On 3 years of weekly data the ACHR/RKLB correlation comes out at 0.57, moderate. Little has changed lately, as the 1-year reading of 0.63 lands near the 3-year figure. The 5-year figure is 0.51, and annualized covariance runs at 4293.3 %².
Few assets follow ACHR as closely as RKLB, which ranks #3 of 26 tracked partners. Their recent paths diverged sharply: over the last 12 months RKLB outperformed by 81.2 percentage points (-35.2% for ACHR against +46.0% for RKLB).
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ACHR vs RKLB: side by side
| ACHR (Archer Aviation Inc.) | RKLB (Rocket Lab Corporation) | |
|---|---|---|
| 1-year return | -35.2% | +46.0% |
| 5-year return | -40.7% | +573.3% |
| Volatility (ann.) | 87.9% | 85.6% |
| Beta vs S&P 500 | 3.18 | 2.58 |
| Max drawdown (3Y) | -67.4% | -61.0% |
| Market cap | $4.6B | $43.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACHR | RKLB |
|---|---|---|
| 2022 | -69.0% | -69.3% |
| 2023 | +228.3% | +46.7% |
| 2024 | +58.8% | +360.6% |
| 2025 | -22.9% | +173.9% |
| 2026 | -21.1% | -3.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACHR and RKLB good diversifiers for each other?
Somewhat, no more. With 0.57 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ACHR and RKLB?
The ACHR/RKLB correlation stands at 0.57 on a 3-year window (1 year: 0.63, 5 years: 0.51), computed from weekly returns as of 2026-08-27.
Is RKLB a good diversifier for ACHR?
Somewhat, no more. With 0.57 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.57 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/achr-vs-rklb.json
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[](https://www.pairbook.io/pair/achr-vs-rklb/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ACHR correlations · RKLB correlations
