CTS vs IWM: Correlation
Measured on weekly returns over the past three years, CTS Corporation (CTS) and iShares Russell 2000 ETF (IWM) carry a correlation of 0.73, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CTS and IWM?
Across a 3-year window, the weekly returns of CTS and IWM correlate at 0.73, strong. The past 12 months show a weaker link (0.58) than the 3-year average (0.73). Stretching to 5 years gives 0.61, with an annualized covariance of 480.6 %².
IWM is one of the assets that tracks CTS most closely: it ranks #2 out of the 26 assets we track against CTS. The trailing year gives CTS the advantage: +35.8% versus +28.4%, a 7.4-point spread. Risk is not evenly split, since CTS carries 1.7 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.
CTS vs IWM: side by side
| CTS (CTS Corporation) | IWM (iShares Russell 2000 ETF) | |
|---|---|---|
| 1-year return | +35.8% | +28.4% |
| 5-year return | +63.4% | +41.5% |
| Volatility (ann.) | 33.0% | 19.8% |
| Beta vs S&P 500 | 1.40 | 1.06 |
| Max drawdown (3Y) | -40.6% | -27.5% |
| Market cap | $1.6B | – |
| P/E (trailing) | 23.8 | – |
| Dividend yield | 0.28% | 0.91% |
| Expense ratio | – | 0.19% |
| Assets under management | – | $80.1B |
| Sector / category | US Listed | ETF · US Small & Mid Cap |
IWM, iShares's Small Blend fund, carries $80.1B under management, 1757 holdings, a 0.19% expense ratio, a 0.91% trailing dividend yield.
Year-by-year returns
| Year | CTS | IWM |
|---|---|---|
| 2022 | +7.8% | -20.5% |
| 2023 | +11.4% | +16.8% |
| 2024 | +20.9% | +11.4% |
| 2025 | -18.4% | +12.7% |
| 2026 | +34.7% | +22.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
Keep in mind that IWM holds CTS at a 0.05% weight, which makes a slice of this correlation mechanical rather than coincidental.
Are CTS and IWM good diversifiers for each other?
To a limited degree. At 0.73 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 CTS and IWM?
The CTS/IWM correlation stands at 0.73 on a 3-year window (1 year: 0.58, 5 years: 0.61), computed from weekly returns as of 2026-08-27.
Is IWM a good diversifier for CTS?
To a limited degree. At 0.73 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 0.73 mean?
A reading of 0.73 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/cts-vs-iwm.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cts-vs-iwm/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CTS correlations · IWM correlations
