DBX vs HTOO: Correlation
Measured on weekly returns over the past three years, Dropbox, Inc. (DBX) and Fusion Fuel Green PLC (HTOO) carry a correlation of -0.17, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DBX and HTOO?
Across a 3-year window, the weekly returns of DBX and HTOO correlate at -0.17, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.13) sits close to the 3-year figure. Stretching to 5 years gives -0.09, with an annualized covariance of -724.2 %².
By 3-year correlation, HTOO places #11 of the 18 assets tracked against DBX. Correlation aside, the last 12 months split them widely, with DBX ahead by 74.7 points (+24.5% versus -50.2%). One caveat on sizing: HTOO is 3.9 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.
DBX vs HTOO: side by side
| DBX (Dropbox, Inc.) | HTOO (Fusion Fuel Green PLC) | |
|---|---|---|
| 1-year return | +24.5% | -50.2% |
| 5-year return | +14.9% | -99.5% |
| Volatility (ann.) | 32.7% | 126.6% |
| Beta vs S&P 500 | 0.86 | 0.90 |
| Max drawdown (3Y) | -37.4% | -97.7% |
| Market cap | $7.8B | – |
| P/E (trailing) | 19.2 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | DBX | HTOO |
|---|---|---|
| 2022 | -8.8% | -46.5% |
| 2023 | +31.7% | -74.7% |
| 2024 | +1.9% | -49.7% |
| 2025 | -7.5% | -83.1% |
| 2026 | +29.1% | -39.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DBX and HTOO good diversifiers for each other?
Yes. With a correlation of -0.17, DBX and HTOO have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between DBX and HTOO?
The DBX/HTOO correlation stands at -0.17 on a 3-year window (1 year: -0.13, 5 years: -0.09), computed from weekly returns as of 2026-08-27.
Is HTOO a good diversifier for DBX?
Yes. With a correlation of -0.17, DBX and HTOO have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.17 mean?
A reading of -0.17 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/dbx-vs-htoo.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/dbx-vs-htoo/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DBX correlations · HTOO correlations
