ACWI vs TDG: Correlation
iShares MSCI ACWI ETF (ACWI) and TransDigm Group (TDG) show a moderate relationship: their 3-year correlation of weekly returns is 0.50.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACWI and TDG?
On 3 years of weekly data the ACWI/TDG correlation comes out at 0.50, moderate. Little has changed lately, as the 1-year reading of 0.44 lands near the 3-year figure. The 5-year figure is 0.63, and annualized covariance runs at 177.4 %².
Within ACWI's tracked universe of 119 assets, TDG comes in at #94 by 3-year correlation. The last year tells two different stories: ACWI led by 31.8 percentage points, +22.7% for ACWI against -9.1% for TDG. On a rolling one-year basis the correlation drifted between 0.31 and 0.75, a moderate band. Risk is not evenly split, since TDG 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.
ACWI vs TDG: side by side
| ACWI (iShares MSCI ACWI ETF) | TDG (TransDigm Group) | |
|---|---|---|
| 1-year return | +22.7% | -9.1% |
| 5-year return | +69.0% | +136.5% |
| Volatility (ann.) | 13.8% | 25.5% |
| Beta vs S&P 500 | 0.92 | 0.91 |
| Max drawdown (3Y) | -16.5% | -25.3% |
| Market cap | – | $65.6B |
| P/E (trailing) | – | 36.6 |
| Dividend yield | 1.44% | 0.00% |
| Expense ratio | 0.32% | – |
| Assets under management | $32.5B | – |
| Sector / category | ETF · Global | Industrials |
On the fund side, ACWI sits in the Global Large-Stock Blend category at iShares, with $32.5B under management, 1590 holdings, a 0.32% expense ratio, a 1.44% trailing dividend yield.
Year-by-year returns
| Year | ACWI | TDG |
|---|---|---|
| 2022 | -18.4% | +1.8% |
| 2023 | +22.3% | +66.6% |
| 2024 | +17.4% | +32.3% |
| 2025 | +22.4% | +12.2% |
| 2026 | +14.9% | -10.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
TDG represents 0.06% of ACWI's portfolio, so part of any move in ACWI is TDG itself, and the correlation between them is partly mechanical.
Are ACWI and TDG good diversifiers for each other?
Only partially. A correlation of 0.50 means ACWI and TDG 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 ACWI and TDG?
The ACWI/TDG correlation stands at 0.50 on a 3-year window (1 year: 0.44, 5 years: 0.63), computed from weekly returns as of 2026-08-27.
Is TDG a good diversifier for ACWI?
Only partially. A correlation of 0.50 means ACWI and TDG share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.50 mean?
A reading of 0.50 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/acwi-vs-tdg.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/acwi-vs-tdg/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ACWI correlations · TDG correlations
