AME vs RFAI: Correlation
How closely do Ametek (AME) and RF Acquisition Corp II (RFAI) trade together? Their weekly returns over three years give a correlation of -0.20, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AME and RFAI?
Across a 3-year window, the weekly returns of AME and RFAI correlate at -0.20, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.34) than the 3-year average (-0.20). Stretching to 5 years gives n/a, with an annualized covariance of -1269.2 %².
Out of 31 assets tracked against AME, RFAI lands near the bottom at #27. The last year tells two different stories: RFAI led by 358.1 percentage points, +31.4% for AME against +389.5% for RFAI. One caveat on sizing: RFAI is 14.1 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
AME vs RFAI: side by side
| AME (Ametek) | RFAI (RF Acquisition Corp II) | |
|---|---|---|
| 1-year return | +31.4% | +389.5% |
| 5-year return | +83.6% | n/a |
| Volatility (ann.) | 20.4% | 288.3% |
| Beta vs S&P 500 | 0.84 | -1.62 |
| Max drawdown (3Y) | -23.0% | -16.5% |
| Market cap | $55.9B | $0.4B |
| P/E (trailing) | 35.8 | 399.9 |
| Dividend yield | 0.53% | 0.00% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | AME | RFAI |
|---|---|---|
| 2022 | -4.3% | – |
| 2023 | +18.8% | – |
| 2024 | +10.0% | – |
| 2025 | +14.7% | +5.2% |
| 2026 | +19.1% | +383.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AME and RFAI good diversifiers for each other?
By historical standards, yes. A correlation of -0.20 means the two rarely move for the same reasons.
FAQ
What is the correlation between AME and RFAI?
The AME/RFAI correlation stands at -0.20 on a 3-year window (1 year: -0.34, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is RFAI a good diversifier for AME?
By historical standards, yes. A correlation of -0.20 means the two rarely move for the same reasons.
What does a correlation of -0.20 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/ame-vs-rfai.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ame-vs-rfai/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AME correlations · RFAI correlations
