BKSY vs SPIR: Correlation
Measured on weekly returns over the past three years, BlackSky Technology Inc. (BKSY) and Spire Global, Inc. (SPIR) carry a correlation of 0.51, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BKSY and SPIR?
Across a 3-year window, the weekly returns of BKSY and SPIR correlate at 0.51, moderate. The link has tightened recently: the 1-year correlation (0.72) runs above the 3-year figure (0.51). Stretching to 5 years gives 0.43, with an annualized covariance of 4308.3 %².
SPIR is one of the assets that tracks BKSY most closely: it ranks #2 out of the 14 assets we track against BKSY. Correlation aside, the last 12 months split them widely, with SPIR ahead by 17.4 points (+36.3% versus +53.7%).
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.
BKSY vs SPIR: side by side
| BKSY (BlackSky Technology Inc.) | SPIR (Spire Global, Inc.) | |
|---|---|---|
| 1-year return | +36.3% | +53.7% |
| 5-year return | -69.1% | -81.3% |
| Volatility (ann.) | 90.5% | 94.0% |
| Beta vs S&P 500 | 2.48 | 2.35 |
| Max drawdown (3Y) | -69.1% | -66.2% |
| Market cap | $1.0B | $0.6B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BKSY | SPIR |
|---|---|---|
| 2022 | -65.7% | -71.6% |
| 2023 | -9.1% | +1.8% |
| 2024 | -3.7% | +79.9% |
| 2025 | +73.8% | -46.7% |
| 2026 | +32.1% | +86.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BKSY and SPIR good diversifiers for each other?
To a limited degree. At 0.51 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between BKSY and SPIR?
The BKSY/SPIR correlation stands at 0.51 on a 3-year window (1 year: 0.72, 5 years: 0.43), computed from weekly returns as of 2026-08-27.
Is SPIR a good diversifier for BKSY?
To a limited degree. At 0.51 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.51 mean?
A reading of 0.51 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/bksy-vs-spir.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bksy-vs-spir/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BKSY correlations · SPIR correlations
