SPIR vs STXS: Correlation
Spire Global, Inc. (SPIR) and Stereotaxis, Inc. (STXS) show a moderate relationship: their 3-year correlation of weekly returns is 0.42.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPIR and STXS?
On 3 years of weekly data the SPIR/STXS correlation comes out at 0.42, moderate. Lately the two have moved closer together, with the 1-year correlation at 0.56 versus 0.42 over 3 years. The 5-year figure is 0.32, and annualized covariance runs at 2050.5 %².
Within SPIR's tracked universe of 11 assets, STXS comes in at #5 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months SPIR outperformed by 102.5 percentage points (+53.7% for SPIR against -48.8% for STXS). Risk is not evenly split, since SPIR carries 1.8 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.
SPIR vs STXS: side by side
| SPIR (Spire Global, Inc.) | STXS (Stereotaxis, Inc.) | |
|---|---|---|
| 1-year return | +53.7% | -48.8% |
| 5-year return | -81.3% | -76.8% |
| Volatility (ann.) | 94.0% | 51.7% |
| Beta vs S&P 500 | 2.35 | 1.07 |
| Max drawdown (3Y) | -66.2% | -64.7% |
| Market cap | $0.6B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | SPIR | STXS |
|---|---|---|
| 2022 | -71.6% | -66.6% |
| 2023 | +1.8% | -15.5% |
| 2024 | +79.9% | +30.3% |
| 2025 | -46.7% | +0.9% |
| 2026 | +86.7% | -36.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPIR and STXS good diversifiers for each other?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between SPIR and STXS?
Using weekly returns as of 2026-08-27: 0.42 over 3 years, with 0.56 over the last year and 0.32 over 5 years.
Is STXS a good diversifier for SPIR?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.42 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/spir-vs-stxs.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/spir-vs-stxs/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SPIR correlations · STXS correlations
