BOSC vs QQQ: Correlation
Measured on weekly returns over the past three years, B.O.S. Better Online Solutions (BOSC) and Invesco QQQ Trust (QQQ) carry a correlation of 0.24, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BOSC and QQQ?
Over the past 3 years, BOSC and QQQ moved with a correlation of 0.24, which is weak. Lately the two have drifted apart, with the 1-year correlation at 0.13 versus 0.24 over 3 years. Over 5 years the correlation is 0.26, and the annualized covariance of weekly returns is 162.8 %².
QQQ is close to the least connected end of BOSC's tracked universe, ranking #7 of 10. Correlation aside, the last 12 months split them widely, with QQQ ahead by 30.4 points (-4.1% versus +26.3%). Risk is not evenly split, since BOSC carries 1.7 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.
BOSC vs QQQ: side by side
| BOSC (B.O.S. Better Online Solutions) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -4.1% | +26.3% |
| 5-year return | +15.6% | +95.4% |
| Volatility (ann.) | 34.0% | 19.6% |
| Beta vs S&P 500 | 0.61 | 1.28 |
| Max drawdown (3Y) | -39.1% | -22.8% |
| Market cap | – | – |
| P/E (trailing) | 8.8 | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | US Listed | ETF · US Growth & Tech |
QQQ is a Large Growth fund from Invesco: $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | BOSC | QQQ |
|---|---|---|
| 2022 | -28.9% | -32.6% |
| 2023 | +26.3% | +54.9% |
| 2024 | +25.0% | +25.6% |
| 2025 | +38.2% | +20.8% |
| 2026 | +2.6% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BOSC and QQQ good diversifiers for each other?
Reasonably. At 0.24, BOSC and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BOSC and QQQ?
As of 2026-08-27, the correlation of weekly returns between BOSC and QQQ is 0.24 over 3 years, 0.13 over 1 year and 0.26 over 5 years.
Is QQQ a good diversifier for BOSC?
Reasonably. At 0.24, BOSC and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.24 mean?
On the −1 to +1 scale, 0.24 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/bosc-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bosc-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BOSC correlations · QQQ correlations
