IVV vs MCO: Correlation
iShares Core S&P 500 ETF (IVV) and Moody's Corporation (MCO) show a strong relationship: their 3-year correlation of weekly returns is 0.61.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IVV and MCO?
Over the past 3 years, IVV and MCO moved with a correlation of 0.61, which is strong. The link has loosened recently: the 1-year correlation (0.30) runs below the 3-year figure (0.61). Over 5 years the correlation is 0.71, and the annualized covariance of weekly returns is 227.5 %².
Among the 122 assets we track against IVV, MCO ranks #63 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months IVV outperformed by 20.0 percentage points (+20.7% for IVV against +0.7% for MCO). The relationship is regime-dependent: the rolling one-year correlation swung between 0.33 and 0.88 over the past three years, so this pair behaves very differently depending on the market environment. Risk is not evenly split, since MCO 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.
IVV vs MCO: side by side
| IVV (iShares Core S&P 500 ETF) | MCO (Moody's Corporation) | |
|---|---|---|
| 1-year return | +20.7% | +0.7% |
| 5-year return | +83.0% | +39.4% |
| Volatility (ann.) | 14.5% | 25.8% |
| Beta vs S&P 500 | 1.00 | 1.08 |
| Max drawdown (3Y) | -18.8% | -24.7% |
| Market cap | – | $88.2B |
| P/E (trailing) | – | 32.7 |
| Dividend yield | 1.09% | 0.77% |
| Expense ratio | 0.03% | – |
| Assets under management | $869.2B | – |
| Sector / category | ETF · US Large Cap | Financials |
On the fund side, IVV sits in the Large Blend category at iShares, with $869.2B under management, 503 holdings, a 0.03% expense ratio, a 1.09% trailing dividend yield.
Year-by-year returns
| Year | IVV | MCO |
|---|---|---|
| 2022 | -18.2% | -28.0% |
| 2023 | +26.3% | +41.5% |
| 2024 | +24.9% | +22.2% |
| 2025 | +17.8% | +8.7% |
| 2026 | +13.7% | +0.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
A structural note: 0.12% of IVV is MCO itself, so the fund partly moves with the stock by construction.
Are IVV and MCO good diversifiers for each other?
Only partially. A correlation of 0.61 means IVV and MCO share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between IVV and MCO?
The IVV/MCO correlation stands at 0.61 on a 3-year window (1 year: 0.30, 5 years: 0.71), computed from weekly returns as of 2026-08-27.
Is MCO a good diversifier for IVV?
Only partially. A correlation of 0.61 means IVV and MCO share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.61 mean?
A reading of 0.61 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/ivv-vs-mco.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ivv-vs-mco/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: IVV correlations · MCO correlations
