BSEM vs MACI: Correlation
BioStem Technologies, Inc. (BSEM) and Melar Acquisition Corp. I - Class A (MACI) show a negative relationship: their 3-year correlation of weekly returns is -0.25.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BSEM and MACI?
Across a 3-year window, the weekly returns of BSEM and MACI correlate at -0.25, negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.38 versus -0.25 over 3 years. Stretching to 5 years gives n/a, with an annualized covariance of -57.9 %².
Out of 12 assets tracked against BSEM, MACI lands near the bottom at #12. Their recent paths diverged sharply: over the last 12 months MACI outperformed by 44.1 percentage points (-39.7% for BSEM against +4.4% for MACI). Note the risk asymmetry: BSEM runs 53.9 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.
BSEM vs MACI: side by side
| BSEM (BioStem Technologies, Inc.) | MACI (Melar Acquisition Corp. I - Class A) | |
|---|---|---|
| 1-year return | -39.7% | +4.4% |
| 5-year return | +263.2% | n/a |
| Volatility (ann.) | 113.1% | 2.1% |
| Beta vs S&P 500 | 1.65 | -0.03 |
| Max drawdown (3Y) | -88.0% | -2.0% |
| Market cap | $0.1B | $0.2B |
| P/E (trailing) | 4.1 | 60.9 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BSEM | MACI |
|---|---|---|
| 2022 | +187.5% | – |
| 2023 | +96.0% | – |
| 2024 | +136.2% | – |
| 2025 | -72.5% | +5.7% |
| 2026 | +1.0% | +3.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BSEM and MACI good diversifiers for each other?
By historical standards, yes. A correlation of -0.25 means the two rarely move for the same reasons.
FAQ
What is the correlation between BSEM and MACI?
As of 2026-08-27, the correlation of weekly returns between BSEM and MACI is -0.25 over 3 years, -0.38 over 1 year and n/a over 5 years.
Is MACI a good diversifier for BSEM?
By historical standards, yes. A correlation of -0.25 means the two rarely move for the same reasons.
What does a correlation of -0.25 mean?
On the −1 to +1 scale, -0.25 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/bsem-vs-maci.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bsem-vs-maci/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BSEM correlations · MACI correlations
