IEX vs RRX: Correlation
How closely do IDEX Corporation (IEX) and Regal Rexnord Corporation (RRX) trade together? Their weekly returns over three years give a correlation of 0.63, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IEX and RRX?
On 3 years of weekly data the IEX/RRX correlation comes out at 0.63, strong. Recent behaviour matches the longer record: 0.61 over 1 year against 0.63 over 3. The 5-year figure is 0.56, and annualized covariance runs at 614.1 %².
Within IEX's tracked universe of 40 assets, RRX comes in at #17 by 3-year correlation. Correlation aside, the last 12 months split them widely, with IEX ahead by 34.8 points (+43.0% versus +8.2%). Risk is not evenly split, since RRX carries 1.8 times the volatility of the other side.
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.
IEX vs RRX: side by side
| IEX (IDEX Corporation) | RRX (Regal Rexnord Corporation) | |
|---|---|---|
| 1-year return | +43.0% | +8.2% |
| 5-year return | +10.5% | +18.1% |
| Volatility (ann.) | 23.3% | 42.0% |
| Beta vs S&P 500 | 0.89 | 1.10 |
| Max drawdown (3Y) | -34.6% | -48.1% |
| Market cap | $17.2B | $10.9B |
| P/E (trailing) | 33.8 | 34.0 |
| Dividend yield | 1.23% | 0.85% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | IEX | RRX |
|---|---|---|
| 2022 | -2.2% | -28.7% |
| 2023 | -3.8% | +24.6% |
| 2024 | -2.4% | +5.7% |
| 2025 | -13.7% | -8.6% |
| 2026 | +32.9% | +17.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IEX and RRX good diversifiers for each other?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between IEX and RRX?
As of 2026-08-27, the correlation of weekly returns between IEX and RRX is 0.63 over 3 years, 0.61 over 1 year and 0.56 over 5 years.
Is RRX a good diversifier for IEX?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.63 mean?
A reading of 0.63 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/iex-vs-rrx.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/iex-vs-rrx/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: IEX correlations · RRX correlations
