OPTX vs SIDU: Correlation
How closely do Syntec Optics Holdings, Inc. (OPTX) and Sidus Space, Inc. (SIDU) trade together? Their weekly returns over three years give a correlation of 0.51, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OPTX and SIDU?
On 3 years of weekly data the OPTX/SIDU correlation comes out at 0.51, moderate. The past 12 months show a weaker link (0.37) than the 3-year average (0.51). The 5-year figure is 0.35, and annualized covariance runs at 18507.7 %².
In OPTX's tracked universe of 12 assets, SIDU sits right near the top at #3. Their recent paths diverged sharply: over the last 12 months OPTX outperformed by 361.2 percentage points (+449.1% for OPTX against +87.9% for SIDU).
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.
OPTX vs SIDU: side by side
| OPTX (Syntec Optics Holdings, Inc.) | SIDU (Sidus Space, Inc.) | |
|---|---|---|
| 1-year return | +449.1% | +87.9% |
| 5-year return | -11.3% | -99.8% |
| Volatility (ann.) | 192.0% | 190.7% |
| Beta vs S&P 500 | 1.00 | 1.29 |
| Max drawdown (3Y) | -93.0% | -96.6% |
| Market cap | $0.4B | $0.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OPTX | SIDU |
|---|---|---|
| 2022 | – | -89.6% |
| 2023 | -49.7% | -91.9% |
| 2024 | -49.9% | -44.4% |
| 2025 | +13.5% | -35.9% |
| 2026 | +205.2% | -25.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OPTX and SIDU 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 OPTX and SIDU?
Using weekly returns as of 2026-08-27: 0.51 over 3 years, with 0.37 over the last year and 0.35 over 5 years.
Is SIDU a good diversifier for OPTX?
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?
On the −1 to +1 scale, 0.51 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/optx-vs-sidu.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/optx-vs-sidu/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: OPTX correlations · SIDU correlations
