CACC vs IWM: Correlation
How closely do Credit Acceptance Corporation (CACC) and iShares Russell 2000 ETF (IWM) trade together? Their weekly returns over three years give a correlation of 0.62, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CACC and IWM?
Across a 3-year window, the weekly returns of CACC and IWM correlate at 0.62, strong. The past 12 months show a weaker link (0.48) than the 3-year average (0.62). Stretching to 5 years gives 0.61, with an annualized covariance of 452.0 %².
Few assets follow CACC as closely as IWM, which ranks #2 of 10 tracked partners. On 12-month performance IWM holds a 10.7-point edge, +17.7% against +28.4%. One caveat on sizing: CACC is 1.9 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.
CACC vs IWM: side by side
| CACC (Credit Acceptance Corporation) | IWM (iShares Russell 2000 ETF) | |
|---|---|---|
| 1-year return | +17.7% | +28.4% |
| 5-year return | +4.2% | +41.5% |
| Volatility (ann.) | 36.8% | 19.8% |
| Beta vs S&P 500 | 1.30 | 1.06 |
| Max drawdown (3Y) | -32.7% | -27.5% |
| Market cap | $6.2B | – |
| P/E (trailing) | 13.1 | – |
| Dividend yield | 0.00% | 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 | CACC | IWM |
|---|---|---|
| 2022 | -31.0% | -20.5% |
| 2023 | +12.3% | +16.8% |
| 2024 | -11.9% | +11.4% |
| 2025 | -5.5% | +12.7% |
| 2026 | +35.4% | +22.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CACC and IWM good diversifiers for each other?
Somewhat, no more. With 0.62 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between CACC and IWM?
As of 2026-08-27, the correlation of weekly returns between CACC and IWM is 0.62 over 3 years, 0.48 over 1 year and 0.61 over 5 years.
Is IWM a good diversifier for CACC?
Somewhat, no more. With 0.62 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.62 mean?
On the −1 to +1 scale, 0.62 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cacc-vs-iwm.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cacc-vs-iwm/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CACC correlations · IWM correlations
