BOXL vs PBK: Correlation
Boxlight Corporation (BOXL) and PowerBank Corporation (PBK) show a negative relationship: their 3-year correlation of weekly returns is -0.26.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BOXL and PBK?
On 3 years of weekly data the BOXL/PBK correlation comes out at -0.26, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.26 over 1 year against -0.26 over 3. The 5-year figure is n/a, and annualized covariance runs at -3606.6 %².
PBK is close to the least connected end of BOXL's tracked universe, ranking #10 of 10. On 12-month performance PBK holds a 12.1-point edge, -90.8% against -78.7%.
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.
BOXL vs PBK: side by side
| BOXL (Boxlight Corporation) | PBK (PowerBank Corporation) | |
|---|---|---|
| 1-year return | -90.8% | -78.7% |
| 5-year return | -99.8% | n/a |
| Volatility (ann.) | 131.7% | 96.0% |
| Beta vs S&P 500 | 1.16 | 0.19 |
| Max drawdown (3Y) | -99.3% | -93.7% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BOXL | PBK |
|---|---|---|
| 2022 | -77.5% | – |
| 2023 | -57.0% | – |
| 2024 | -64.3% | – |
| 2025 | -85.2% | -11.7% |
| 2026 | -40.2% | -75.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BOXL and PBK good diversifiers for each other?
By historical standards, yes. A correlation of -0.26 means the two rarely move for the same reasons.
FAQ
What is the correlation between BOXL and PBK?
As of 2026-08-27, the correlation of weekly returns between BOXL and PBK is -0.26 over 3 years, -0.26 over 1 year and n/a over 5 years.
Is PBK a good diversifier for BOXL?
By historical standards, yes. A correlation of -0.26 means the two rarely move for the same reasons.
What does a correlation of -0.26 mean?
On the −1 to +1 scale, -0.26 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/boxl-vs-pbk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/boxl-vs-pbk/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BOXL correlations · PBK correlations
