BOSC vs PUMP: Correlation
How closely do B.O.S. Better Online Solutions (BOSC) and ProPetro Holding Corp. (PUMP) trade together? Their weekly returns over three years give a correlation of 0.37, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BOSC and PUMP?
On 3 years of weekly data the BOSC/PUMP correlation comes out at 0.37, moderate. Lately the two have moved closer together, with the 1-year correlation at 0.56 versus 0.37 over 3 years. The 5-year figure is 0.20, and annualized covariance runs at 809.7 %².
Few assets follow BOSC as closely as PUMP, which ranks #2 of 10 tracked partners. Correlation aside, the last 12 months split them widely, with PUMP ahead by 132.3 points (-4.1% versus +128.2%). Note the risk asymmetry: PUMP runs 1.9 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 PUMP: side by side
| BOSC (B.O.S. Better Online Solutions) | PUMP (ProPetro Holding Corp.) | |
|---|---|---|
| 1-year return | -4.1% | +128.2% |
| 5-year return | +15.6% | +45.4% |
| Volatility (ann.) | 34.0% | 65.1% |
| Beta vs S&P 500 | 0.61 | 0.73 |
| Max drawdown (3Y) | -39.1% | -59.1% |
| Market cap | – | $1.4B |
| P/E (trailing) | 8.8 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BOSC | PUMP |
|---|---|---|
| 2022 | -28.9% | +28.0% |
| 2023 | +26.3% | -19.2% |
| 2024 | +25.0% | +11.3% |
| 2025 | +38.2% | +1.9% |
| 2026 | +2.6% | +17.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BOSC and PUMP good diversifiers for each other?
A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between BOSC and PUMP?
As of 2026-08-27, the correlation of weekly returns between BOSC and PUMP is 0.37 over 3 years, 0.56 over 1 year and 0.20 over 5 years.
Is PUMP a good diversifier for BOSC?
A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.37 mean?
On the −1 to +1 scale, 0.37 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-pump.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bosc-vs-pump/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BOSC correlations · PUMP correlations
