SPYG vs TDG: Correlation
SPDR Portfolio S&P 500 Growth ETF (SPYG) 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 SPYG and TDG?
On 3 years of weekly data the SPYG/TDG correlation comes out at 0.50, moderate. The relationship has been stable: the 1-year correlation (0.40) sits close to the 3-year figure. The 5-year figure is 0.58, and annualized covariance runs at 243.5 %².
Among the 97 assets we track against SPYG, TDG ranks #74 by 3-year correlation. Correlation aside, the last 12 months split them widely, with SPYG ahead by 31.5 points (+22.4% versus -9.1%). The rolling one-year correlation moved between 0.31 and 0.69 over the past three years, a moderate range.
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.
SPYG vs TDG: side by side
| SPYG (SPDR Portfolio S&P 500 Growth ETF) | TDG (TransDigm Group) | |
|---|---|---|
| 1-year return | +22.4% | -9.1% |
| 5-year return | +85.9% | +136.5% |
| Volatility (ann.) | 18.9% | 25.5% |
| Beta vs S&P 500 | 1.25 | 0.91 |
| Max drawdown (3Y) | -22.1% | -25.3% |
| Market cap | – | $65.6B |
| P/E (trailing) | – | 36.6 |
| Dividend yield | 0.49% | 0.00% |
| Expense ratio | 0.04% | – |
| Assets under management | $52.2B | – |
| Sector / category | ETF · US Style | Industrials |
SPYG, State Street Investment Management's Large Growth fund, carries $52.2B under management, 148 holdings, a 0.04% expense ratio, a 0.49% trailing dividend yield.
Year-by-year returns
| Year | SPYG | TDG |
|---|---|---|
| 2022 | -29.4% | +1.8% |
| 2023 | +30.0% | +66.6% |
| 2024 | +36.0% | +32.3% |
| 2025 | +22.1% | +12.2% |
| 2026 | +14.5% | -10.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
A structural note: 0.19% of SPYG is TDG itself, so the fund partly moves with the stock by construction.
Are SPYG and TDG good diversifiers for each other?
Only partially. A correlation of 0.50 means SPYG 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 SPYG and TDG?
Using weekly returns as of 2026-08-27: 0.50 over 3 years, with 0.40 over the last year and 0.58 over 5 years.
Is TDG a good diversifier for SPYG?
Only partially. A correlation of 0.50 means SPYG 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/spyg-vs-tdg.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/spyg-vs-tdg/)
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Related comparisons
Hubs: SPYG correlations · TDG correlations
